HFBR-0400 Series HFBR-14xx Transmitters HFBR-24xx Receivers Low Cost, Miniature Fiber Optic Components with ST(R), SMA, SC and FC Ports Data Sheet Description Features The HFBR-0400 Series of components is designed to provide cost effective, high performance fiber optic communication links for information systems and industrial applications with link distances of up to 2.7 kilometers. With the HFBR-24X6, the 125 MHz analog receiver, data rates of up to 160 megabaud are attainable. * Meets IEEE 802.3 Ethernet and 802.5 Token Ring Standards * Low cost transmitters and receivers * Choice of ST(R), SMA, SC or FC ports * 820 nm wavelength technology * Signal rates up to 160 megabaud * Link distances up to 2.7 km * Specified with 50/125 m, 62.5/125 m, 100/140 m, and 200 m HCS(R) fiber * Repeatable ST connections within 0.2 dB typical * Unique optical port design for efficient coupling * Auto-insertable and wave solderable * No board mounting hardware required * Wide operating temperature range -40C to 85C * AlGaAs emitters 100% burn-in ensures high reliability * Conductive port option Transmitters and receivers are directly compatible with popular "industry-standard" connectors: ST, SMA, SC and FC. They are completely specified with multiple fiber sizes; including 50/125 m, 62.5/125 m, 100/140 m, and 200 m. Complete evaluation kits are available for ST product offerings; including transmitter, receiver, connectored cable, and technical literature. In addition, ST connectored cables are available for evaluation. Applications * * * * * * * * * ST(R) is a registered trademark of AT&T. HCS(R) is a registered trademark of the SpecTran Corporation. Local area networks Computer to peripheral links Computer monitor links Digital cross connect links Central office switch/PBX links Video links Modems and multiplexers Suitable for tempest systems Industrial control links HFBR-0400 Series Part Number Guide HFBR X4XXaa 1 = Transmitter 2 = Receiver Option T (Threaded Port Option) Option C (Conductive Port Receiver Option) Option M (Metal Port Option) 4 = 820 nm Transmitter and Receiver Products 2 = Tx, Standard Power 4 = Tx, High Power 2 = Rx, 5 MBd, TTL Output 6 = Rx, 125 MHz, Analog Output 0 = SMA, Housed 1 = ST, Housed 2 = FC, Housed E = SC, Housed Available Options HFBR-1402 HFBR-1404 HFBR-1412 HFBR-1412T HFBR-1414 HFBR-1414M HFBR-1414T HFBR-1424 HFBR-1412TM HFBR-14E4 HFBR-2402 HFBR-2406 HFBR-2412TC HFBR-2416 HFBR-2416M HFBR-2412 HFBR-2412T HFBR-2422 HFBR-24E6 HFBR-2416T Receiver HFBR-24X2 HFBR-24X2 HFBR-24X6 HFBR-24X6 HFBR-24X6 HFBR-24X6 HFBR-24X6 HFBR-24X6 Fiber Size (m) 200 HCS 62.5/125 62.5/125 62.5/125 62.5/125 62.5/125 62.5/125 62.5/125 HFBR-2416TC Link Selection Guide Data Rate (MBd) 5 5 20 32 55 125 155 160 Distance (m) 1500 2000 2700 2200 1400 700 600 500 Transmitter HFBR-14X2 HFBR-14X4 HFBR-14X4 HFBR-14X4 HFBR-14X4 HFBR-14X4 HFBR-14X4 HFBR-14X4 Evaluation Kit N/A HFBR-0410 HFBR-0414 HFBR-0414 HFBR-0414 HFBR-0416 HFBR-0416 HFBR-0416 For additional information on specific links see the following individual link descriptions. Distances measured over temperature range from 0 to 70C. Applications Support Guide This section gives the designer information necessary to use the HFBR-0400 series components to make a functional fiber-optic transceiver. Avago offers a wide selection of evaluation kits for hands-on experience with fiberoptic products as well as a wide range of application notes com- plete with circuit diagrams and board layouts. Furthermore, Avago's application support group is always ready to assist with any design consideration. Application Literature Title HFBR-0400 Series Reliability Data Application Bulletin 78 Application Note 1038 Application Note 1065 Application Note 1073 Application Note 1086 Application Note 1121 Application Note 1122 Application Note 1123 Application Note 1137 2 Description Transmitter & Receiver Reliability Data Low Cost Fiber Optic Links for Digital Applications up to 155 MBd Complete Fiber Solutions for IEEE 802.3 FOIRL, 10 Base-FB and 10 Base-FL Complete Solutions for IEEE 802.5J Fiber-Optic Token Ring HFBR-0319 Test Fixture for 1X9 Fiber Optic Transceivers Optical Fiber Interconnections in Telecommunication Products DC to 32 MBd Fiber-Optic Solutions 2 to 70 MBd Fiber-Optic Solutions 20 to 160 MBd Fiber-Optic Solutions Generic Printed Circuit Layout Rules HFBR-0400 Series Evaluation Kits HFBR-0410 ST Evaluation Kit Contains the following : * One HFBR-1412 transmitter * One HFBR-2412 five megabaud TTL receiver * Three meters of ST connectored 62.5/125 (m fiber optic cable with low cost plastic ferrules. * Related literature HFBR-0414 ST Evaluation Kit Includes additional components to interface to the transmitter and receiver as well as the PCB to reduce design time. Contains the following: * One HFBR-1414T transmitter * One HFBR-2416T receiver * Three meters of ST connectored 62.5/125 m fiber optic cable * Printed circuit board * ML-4622 CP Data Quantizer * 74ACTllOOON LED Driver * LT1016CN8 Comparator * 4.7 H Inductor * Related literature HFBR-0400 SMA Evaluation Kit Contains the following : * One HFBR-1402 transmitter * One HFBR-2402 five megabaud TTL receiver * Two meters of SMA connectored 1000 m plastic optical fiber * Related literature HFBR-0416 Evaluation Kit Contains the following: * One fully assembled 1x9 transceiver board for 155 MBd evaluation including: -HFBR-1414 transmitter -HFBR-2416 receiver -circuitry * Related literature Package and Handling Information Package Information All HFBR-0400 Series transmitters and receivers are housed in a low-cost, dual-inline package that is made of high strength, heat resistant, chemically resistant, and UL 94V-O flame retardant ULTEM(R) (plastic (UL File #E121562). The transmitters are easily identified by the light grey color connector port. The receivers are easily identified by the dark grey color connector port. (Black color for conductive port.) The package is designed for auto-insertion and wave soldering so it is ideal for high volume production applications. Handling and Design Information Each part comes with a protective port cap or plug covering the optics. These caps/plugs will vary by port style. When soldering, it is advisable to leave the protective cap on the unit to keep the optics clean. Good system performance requires clean port optics and cable ferrules to avoid obstructing the optical path. Ultem(R) is a registered Trademark of the GE corporation. 3 Clean compressed air often is sufficient to remove particles of dirt; methanol on a cotton swab also works well. Recommended Chemicals for Cleaning/Degreasing HFBR-0400 Products Alcohols: methyl, isopropyl, isobutyl. Aliphatics: hexane, heptane, Other: soap solution, naphtha. Do not use partially halogenated hydrocarbons such as 1,1.1 trichloroethane, ketones such as MEK, acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride, or N-methylpyrolldone. Also, Avago does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm. Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X40X 1/4 - 36 UNS 2A THREAD Mechanical Dimensions SMA Port 12.7 (0.50) HFBR-X40X 22.2 (0.87) 6.35 (0.25) 12.7 (0.50) 6.4 (0.25)DIA. 3.81 (0.15) 3.6 (0.14) 5.1 (0.20) 1.27 (0.05) 5 6 4 2.54 (0.10) 8 2 7 3 PINS 2,3,6,7 0.46 DIA. (0.018) 1 2.54 (0.10) PINS 1,4,5,8 0.51 X 0.38 (0.020 X 0.015) 10.2 (0.40) Mechanical Dimensions ST Port 12.7 (0.50) HFBR-X41X Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X41X PIN NO. 1 INDICATOR 8.2 (0.32) 27.2 (1.07) 6.35 (0.25) 12.7 (0.50) 7.0 DIA. (0.28) 3.81 (0.15) 5 8 2 7 PIN NO. 1 INDICATOR 4 5.1 (0.20) 1.27 (0.05) 2.54 (0.10) 6 4 PINS 2,3,6,7 0.46 DIA. (0.018) 3 PINS 1,4,5,8 0.51 X 0.38 (0.020 X 0.015) 1 2.54 (0.10) 3.6 (0.14) 10.2 (0.40) Mechanical Dimensions Threaded ST Port HFBR-X41XT Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X41XT 5.1 (0.20) 12.7 (0.50) 8.4 (0.33) 27.2 (1.07) 7.6 (0.30) 6.35 (0.25) 12.7 (0.50) 7.1 DIA. (0.28) 3.6 (0.14) 5.1 (0.20) 3/8 - 32 UNEF - 2A 3.81 (0.15) 1.27 (0.05) 5 2.54 (0.10) 8 2 7 6 4 PINS 2,3,6,7 0.46 DIA. (0.018) 3 PINS 1,4,5,8 0.51 X 0.38 (0.020 X 0.015) 1 2.54 DIA. (0.10) PIN NO. 1 INDICATOR Mechanical Dimensions FC Port M8 x 0.75 6G THREAD (METRIC) 12.7 (0.50) Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X42X HFBR-X42X 19.6 (0.77) 12.7 (0.50) 7.9 (0.31) 3.81 (0.15) 2.5 (0.10) 5 5 6 8 1 2 7 3 4 2.5 (0.10) PIN NO. 1 INDICATOR 3.6 (0.14) 5.1 (0.20) 10.2 (0.40) 10.2 (0.40) Mechanical Dimensions SC Port Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X4EX HFBR-X4EX 28.65 (1.128) 6.35 (0.25) 12.7 (0.50) 10.0 (0.394) 5.1 (0.200) 15.95 (0.628) 3.81 (0.15) 1.27 (0.050) 2.54 (0.10) 2.54 (0.100) 12.7 (0.500) 6 10.38 (0.409) 3.60 (0.140) ; ;;; ;; ;; ;;; ;;; ;; LED OR DETECTOR IC LENS-SPHERE (ON TRANSMITTERS ONLY) HOUSING LENS-WINDOW CONNECTOR PORT HEADER EPOXY BACKFILL PORT GROUNDING PATH INSERT Figure 1. HFBR-0400 ST series cross-sectional view. Panel Mount Hardware HFBR-4401: for SMA Ports HFBR-4411: for ST Ports 1/4 - 36 UNEF 2B THREAD PART NUMBER 3/8 - 32 UNEF 2B THREAD 0.2 IN. 7.87 DIA. (0.310) HEX-NUT 12.70 DIA. (0.50) 1.65 (0.065) HEX-NUT 1.65 (0.065) 14.27 TYP. (0.563) DIA. 10.41 MAX. (0.410) DIA. 0.14 (0.005) WASHER 0.46 (0.018) WASHER (Each HFBR-4401 and HFBR-4411 kit consists of 100 nuts and 100 washers.) Port Cap Hardware HFBR-4402: 500 SMA Port Caps HFBR-4120: 500 ST Port Plugs (120 psi) 7 3/8 - 32 UNEF 2A THREADING 1 THREAD AVAILABLE 7.87 TYP. (0.310) DIA. 6.61 DIA. (0.260) Rx/Tx COUNTRY OF ORIGIN A YYWW HFBR-X40X DATE CODE WALL NUT WASHER Options In addition to the various port styles available for the HFBR0400 series products, there are also several extra options that can be ordered. To order an option, simply place the corresponding option number at the end of the part number. See page 2 for available options. Option T (Threaded Port Option) * Allows ST style port components to be panel mounted. * Compatible with all current makes of ST multimode connectors * Mechanical dimensions are compliant with MIL-STD83522/13 * Maximum wall thickness when using nuts and washers from the HFBR-4411 hardware kit is 2.8 mm (0.11 inch) * Available on all ST ports 8 Option C (Conductive Port Receiver Option) * Designed to withstand electrostatic discharge (ESD) of 25kV to the port * Significantly reduces effect of electromagnetic interference (EMI) on receiver sensitivity * Allows designer to separate the signal and conductive port grounds * Recommended for use in noisy environments * Available on SMA and threaded ST port style receivers only Option M (Metal Port Option) * Nickel plated aluminum connector receptacle * Designed to withstand electrostatic discharge (ESD) of 15kV to the port * Significantly reduces effect of electromagnetic interference (EMI) on receiver sensitivity * Allows designer to separate the signal and metal port grounds * Recommended for use in very noisy environments * Available on SMA, ST, and threaded ST ports Typical Link Data HFBR-0400 Series Description The following technical data is taken from 4 popular links using the HFBR-0400 series: the 5 MBd link, Ethernet 20 MBd link, Token Ring 32 MBd link, and the 155 MBd link. The data given corresponds to transceiver solutions combining the HFBR-0400 series components and various recommended transceiver design circuits using off-the-shelf electrical components. This data is meant to be regarded as an example of typical link performance for a given design and does not call out any link limitations. Please refer to the appropriate application note given for each link to obtain more information. 5 MBd Link (HFBR-14XX/24X2) Link Performance -40C to +85C unless otherwise specified Parameter Symbol Min. Typ. Optical Power Budget OPB50 4.2 9.6 with 50/125 m fiber Optical Power Budget OPB62.5 8.0 15 with 62.5/125 m fiber Optical Power Budget OPB100 8.0 15 with 100/140 m fiber Optical Power Budget OPB200 12 20 with 200 m fiber Date Rate Synchronous dc Asynchronous dc Propagation Delay LOW to HIGH Propagation Delay HIGH to LOW System Pulse Width Distortion Bit Error Rate Max. Units dB dB dB dB 5 2.5 MBd MBd tPLH 72 ns tPHL 46 ns tPLH -tPHL 26 ns BER 10-9 Conditions HFBR-14X4/24X2 NA = 0.2 HFBR-14X4/24X2 NA = 0.27 HFBR-14X2/24X2 NA = 0.30 HFBR-14X2/24X2 NA = 0.37 TA = 25C, PR = -21 dBm Peak Reference Note 1 Note 1 Note 1 Note 1 Note 2 Note 3, Fig. 7 Figs. 6, 7, 8 Fiber cable length = 1 m Data Rate <5 Bd PR > -24 dBm Peak Notes: 1. OPB at TA = -40 to 85C, VCC = 5.0 V dc, IF ON = 60 mA. PR = -24 dBm peak. 2. Synchronous data rate limit is based on these assumptions: a) 50% duty factor modulation, e.g., Manchester I or BiPhase Manchester II; b) continuous data; c) PLL Phase Lock Loop demodulation; d) TTL threshold. 3. Asynchronous data rate limit is based on these assumptions: a) NRZ data; b) arbitrary timing-no duty factor restriction; c) TTL threshold. 9 5 MBd Logic Link Design If resistor R1 in Figure 2 is 70.4 , a forward current IF of 48 mA is applied to the HFBR14X4 LED transmitter. With IF = 48 mA the HFBR-14X4/24X2 logic link is guaranteed to work with 62.5/125 m fiber optic cable over the entire range of 0 to 1750 meters at a data rate of dc to 5 MBd, with arbitrary data format and pulse width distortion typically less than 25%. By setting R1 = 115 , the transmitter can be driven with IF = 30 mA, if it is desired to economize on power or achieve lower pulse distortion. Figure 2. Typical circuit configuration. 10 The following example will illustrate the technique for selecting the appropriate value of IF and R1. Maximum distance required = 400 meters. From Figure 3 the drive current should be 15 mA. From the transmitter data VF = 1.5 V (max.) at IF = 15 mA as shown in Figure 9. VCC - VF 5 V - 1.5 V R1 = ------- = --------- IF 15 mA R1 = 233 The curves in Figures 3, 4, and 5 are constructed assuming no inline splice or any additional system loss. Should the link consists of any in-line splices, these curves can still be used to calculate link limits provided they are shifted by the additional system loss expressed in dB. For example, Figure 3 indicates that with 48 mA of transmitter drive current, a 1.75 km link distance is achievable with 62.5/125 m fiber which has a maximum attenuation of 4 dB/km. With 2 dB of additional system loss, a 1.25 km link distance is still achievable. Figure 4. HFBR-14X2/HFBR-24X2 link design limits with 100/140 m cable. 55 70 65 tPLH (TYP) @ 25C 60 55 50 45 40 tPHL (TYP) @ 25C 35 30 50 tD - NRZ DISTORTION - ns tPLH OR tPHL PROPOGATION DELAY -ns 75 45 40 35 30 25 25 20 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 PR - RECEIVER POWER - dBm Figure 6. Propagation delay through system with one meter of cable. 20 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 PR - RECEIVER POWER - dBm Figure 7. Typical distortion of pseudo random data at 5 Mb/s. Figure 8. System propagation delay test circuit and waveform timing definitions. 11 60 -1 WORST CASE -40C, +85C UNDERDRIVE -2 50 TYPICAL 26C UNDERDRIVE -3 40 30 -4 CABLE ATTENUATION dB/km MAX (-40C, +85C) 4 MIN (-40C, +85C) 1 TYP (-40C, +85C) 2.8 -5 -6 0 0.4 0.8 1.2 1.6 20 2 LINK LENGTH (km) Figure 5. HFBR-14X4/HFBR-24X2 link design limits with 50/125 m cable. IF - TRANSMITTER FORWARD CURRENT - (mA) 10 LOG (t/to) NORMALIZED TRANSMITTER CURRENT (dB) Figure 3. HFBR-1414/HFBR-2412 link design limits with 62.5/125 m cable. 0 Ethernet 20 MBd Link (HFBR-14X4/24X6) (refer to Application Note 1038 for details) Typical Link Performance Parameter Symbol Receiver Sensitivity Link Jitter Transmitter Jitter Optical Power LED rise time LED fall time Mean difference Bit Error Rate Output Eye Opening Data Format 50% Duty Factor PT tr tf |tr - tf| BER Typ.[1,2] -34.4 7.56 7.03 0.763 -15.2 1.30 3.08 1.77 10-10 36.7 20 Units dBm average ns pk-pk ns pk-pk ns pk-pk dBm average ns ns ns Conditions 20 MBd D2D2 Hexadecimal Data 2 km 62.5/125 m fiber ECL Out Receiver TTL Out Receiver 20 MBd D2D2 Hexadecimal Data 20 MBd D2D2 Hexadecimal Data Peak IF,ON = 60 mA 1 MHz Square Wave Input ns MBd At AUI Receiver Output Notes: 1. Typical data at TA = 25C, VCC = 5.0 V dc. 2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1038 (see applications support section). Token Ring 32 MBd Link (HFBR-14X4/24X6) (refer to Application Note 1065 for details) Typical Link Performance Parameter Symbol Receiver Sensitivity Link Jitter Transmitter Jitter Optical Power Logic Level "0" Optical Power Logic Level "1" LED Rise Time LED Fall Time Mean Difference Bit Error Rate Data Format 50% Duty Factor PT ON PT OFF tr tf |tr - tf| BER Typ.[1,2] -34.1 6.91 5.52 0.823 -12.2 -82.2 1.3 3.08 1.77 10-10 32 Units dBm average ns pk-pk ns pk-pk ns pk-pk dBm peak Conditions 32 MBd D2D2 Hexadecimal Data 2 km 62.5/125 m fiber ECL Out Receiver TTL Out Receiver 32 MBd D2D2 Hexadecimal Data Transmitter TTL in IF ON = 60 mA, IF OFF = 1 mA nsec nsec nsec 1 MHz Square Wave Input MBd Notes: 1. Typical data at TA = 25C, VCC = 5.0 V dc. 2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1065 (see applications support section). 12 155 MBd Link (HFBR-14X4/24X6) (refer to Application Bulletin 78 for details) Typical Link Performance Parameter Symbol Optical Power Budget OPB50 with 50/125 m fiber Optical Power Budget OPB62 with 62.5/125 m fiber Optical Power Budget OPB100 with 100/140 m fiber Optical Power Budget OPB200 with 200 m HCSf Fiber Data Format 20% to 80% Duty Factor System Pulse Width |tPLH - tPHL| Distortion Bit Error Rate BER Typ.[1,2] 7.9 Units 13.9 11.7 Units dB Conditions NA = 0.2 17.7 dB NA = 0.27 11.7 17.7 dB NA = 0.30 16.0 22.0 dB NA = 0.35 1 Max. 175 1 10-9 Ref. Note 2 MBd ns PR = -7 dBm Peak 1 meter 62.5/125 m fiber Data Rate < 100 MBaud PR >-31 dBm Peak Note 2 Notes: 1. Typical data at TA = 25C, VCC = 5.0 V dc, PECL serial interface. 2. Typical OPB was determined at a probability of error (BER) of 10-9. Lower probabilities of error can be achieved with short fibers that have less optical loss. 13 HFBR-14X2/14X4 Low-Cost High-Speed Transmitters Description The HFBR-14XX fiber optic transmitter contains an 820 nm AlGaAs emitter capable of efficiently launching optical power into four different optical fiber sizes: 50/125 m, 62.5/125 m, 100/140 m, and 200 m HCS(R). This allows the designer flexibility in choosing the fiber size. The HFBR-14XX is designed to operate with the Avago HFBR-24XX fiber optic receivers. The HFBR-14XX transmitter's high coupling efficiency allows the emitter to be driven at low current levels resulting in low power consumption and increased reliability of the transmitter. The HFBR-14X4 high power transmitter is optimized for small size fiber and typically can launch -15.8 dBm optical power at 60 mA into 50/125 m fiber and -12 dBm into 62.5/125 m fiber. The HFBR-14X2 standard transmitter typically can launch -12 dBm of optical power at 60 mA into 100/140 m fiber cable. It is ideal for large size fiber such as 100/140 m. The high launched optical power level is useful for systems where star couplers, taps, or inline connectors create large fixed losses. Consistent coupling efficiency is assured by the double-lens optical system (Figure 1). Power coupled into any of the three fiber types varies less than 5 dB from part to part at a given drive current and temperature. Consistent coupling efficiency reduces receiver dynamic range requirements which allows for longer link lengths. Housed Product Unhoused Product Regulatory Compliance - Targeted Specifications Feature Electrostatic Discharge (ESD) Test Method MIL-STD-883 Method 3015 Performance Class 1B (>500, <1000 V) - Human Body Model Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Lead Soldering Cycle Forward Input Current Reverse Input Voltage 14 Symbol TS TA Temp. Time Peak dc IFPK IFdc VBR Min. -55 -40 Max. +85 +85 +260 10 200 100 1.8 Units C C C sec mA mA V Reference Note 1 Electrical/Optical Specifications -40C to +85C unless otherwise specified. Parameter Forward Voltage Symbol VF Forward Voltage Temperature Coefficient VF /T Reverse Input Voltage Peak Emission Wavelength Diode Capacitance Optical Power Temperature Coefficient VBR P CT PT /T Thermal Resistance 14X2 Numerical Aperture 14X4 Numerical Aperture 14X2 Optical Port Diameter 14X4 Optical Port Diameter JA NA NA D D Min. 1.48 1.8 792 Typ.[2] 1.70 1.84 -0.22 -0.18 3.8 820 55 -0.006 -0.010 260 0.49 0.31 290 150 Max. 2.09 Units V mV/C 865 V nm pF dB/C Conditions IF = 60 mA dc IF = 100 mA dc IF = 60 mA dc IF = 100 mA dc IF = 100 A dc Reference Figure 9 Figure 9 V = 0, f = 1 MHz I = 60 mA dc I = 100 mA dc C/W Notes 3, 8 m m Note 4 Note 4 HFBR-14X2 Output Power Measured Out of 1 Meter of Cable Parameter 50/125 m Fiber Cable NA = 0.2 Symbol PT50 62.5/125 m Fiber Cable NA = 0.275 PT62 100/140 m Fiber Cable NA = 0.3 PT100 200 m HCS Fiber Cable NA = 0.37 PT200 Min. -21.8 -22.8 -20.3 -21.9 -19.0 -20.0 -17.5 -19.1 -15.0 16.0 -13.5 -15.1 -10.7 -11.7 -9.2 -10.8 Typ.[2] -18.8 -16.8 -16.0 -14.0 -12.0 -10.0 -7.1 -5.2 Max. -16.8 -15.8 -14.4 -13.8 -14.0 -13.0 -11.6 -11.0 -10.0 -9.0 -7.6 -7.0 -4.7 -3.7 -2.3 -1.7 Unit dBm peak dBm peak dBm peak dBm peak Conditions TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc Reference Notes 5, 6, 9 CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 15 HFBR-14X4 Output Power Measured out of 1 Meter of Cable Parameter 50/125 m Fiber Cable NA = 0.2 Symbol PT50 62.5/125 m Fiber Cable NA = 0.275 PT62 100/140 m Fiber Cable NA = 0.3 PT100 200 m HCS Fiber Cable NA = 0.37 PT200 Min. -18.8 -19.8 -17.3 -18.9 -15.0 -16.0 -13.5 -15.1 -9.5 -10.5 -8.0 -9.6 -5.2 -6.2 -3.7 -5.3 Typ.[2] -15.8 -13.8 -12.0 -10.0 -6.5 -4.5 -3.7 -1.7 Max. -13.8 -12.8 -11.4 -10.8 -10.0 -9.0 -7.6 -7.0 -4.5 -3.5 -2.1 -1.5 +0.8 +1.8 +3.2 +3.8 Unit dBm peak dBm peak dBm peak dBm peak Conditions TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc TA = 25C IF = 60 mA dc TA = 25C IF = 100 mA dc Reference Notes 5, 6, 9 14X2/14X4 Dynamic Characteristics Parameter Rise Time, Fall Time (10% to 90%) Rise Time, Fall Time (10% to 90%) Pulse Width Distortion Symbol tr, tf Min. Typ.[2] 4.0 Max. 6.5 tr, tf 3.0 Units nsec No Pre-bias nsec PWD 0.5 nsec Conditions IF = 60 mA Figure 12 IF = 10 to 100 mA Reference Note 7 Note 7, Figure 11 Figure 11 Notes: 1. For IFPK > 100 mA, the time duration should not exceed 2 ns. 2. Typical data at TA = 25C. 3. Thermal resistance is measured with the transmitter coupled to a connector assembly and mounted on a printed circuit board. 4. D is measured at the plane of the fiber face and defines a diameter where the optical power density is within 10 dB of the maximum. 5. PT is measured with a large area detector at the end of 1 meter of mode stripped cable, with an ST(R) precision ceramic ferrule (MIL-STD-83522/13) for HFBR-1412/1414, and with an SMA 905 precision ceramic ferrule for HFBR-1402/1404. 6. When changing W to dBm, the optical power is referenced to 1 mW (1000 W). Optical Power P (dBm) = 10 log P (W)/1000 W. 7. Pre-bias is recommended if signal rate >10 MBd, see recommended drive circuit in Figure 11. 8. Pins 2, 6, and 7 are welded to the anode header connection to minimize the thermal resistance from junction to ambient. To further reduce the thermal resistance, the anode trace should be made as large as is consistent with good RF circuit design. 9. Fiber NA is measured at the end of 2 meters of mode stripped fiber, using the far-field pattern. NA is defined as the sine of the half angle, determined at 5% of the peak intensity point. When using other manufacturer's fiber cable, results will vary due to differing NA values and specification methods. All HFBR-14XX LED transmitters are classified as IEC 825-1 Accessible Emission Limit (AEL) Class 1 based upon the current proposed draft scheduled to go in to effect on January 1, 1997. AEL Class 1 LED devices are considered eye safe. Contact your Avago sales representative for more information. CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 16 Recommended Drive Circuits The circuit used to supply current to the LED transmitter can significantly influence the optical switching characteristics of the LED. The optical rise/fall times and propagation delays can be improved by using the appropriate circuit techniques. The LED drive circuit shown in Figure 11 uses frequency com- pensation to reduce the typical rise/fall times of the LED and a small pre-bias voltage to minimize propagation delay differences that cause pulse-width distortion. The circuit will typically produce rise/fall times of 3 ns, and a total jitter including pulse-width distortion of less than 1 ns. This circuit is recommended for applications requiring low edge jitter (VCC - VF) + 3.97 (VCC - VF - 1.6 V) Ry = ------------------------------- IF ON (A) 1 RX1 = - 2 17 R ) (---- 3.97 y or high-speed data transmission at signal rates of up to 155 MBd. Component values for this circuit can be calculated for different LED drive currents using the equations shown below. For additional details about LED drive circuits, the reader is encouraged to read Avago Application Bulletin 78 and Application Note 1038. (5 - 1.84) + 3.97 (5 - 1.84 - 1.6) Ry = ----------------------------- 0.100 3.16 + 6.19 Ry = ----------- = 93.5 0.100 93.5 ) = 11.8 (---- 3.97 REQ2() = RX1 - 1 1 RX1 = - 2 RX2 = RX3 = RX4 = 3(REQ2) REQ2 = 11.8 - 1 = 10.8 2000(ps) C(pF) = -------- RX1() RX2 = RX3 = RX4 = 3(10.8) = 32.4 Example for IF ON = 100 mA: VF can be obtained from Figure 9 (= 1.84 V). 2000 ps C = ------- = 169 pF 11.8 1.6 2.0 1.4 1.2 1.4 1.0 0.8 1.0 0 0.8 -1.0 0.6 -2.0 -3.0 -4.0 -5.0 -7.0 0.4 0.2 0 0 10 20 30 40 50 60 70 80 90 100 IF - FORWARD CURRENT - mA Figure 9. Forward voltage and current characteristics. Figure 11. Recommended drive circuit. Figure 12. Test circuit for measuring tr, tf. 18 Figure 10. Normalized transmitter output vs. forward current. P(IF) - P(60 mA) - RELATIVE POWER RATIO - dB P(IF) - P(60 mA) - RELATIVE POWER RATIO 3.0 2.0 1.8 HFBR-24X2 Low-Cost 5 MBd Receiver Description The HFBR-24X2 fiber optic receiver is designed to operate with the Hewlett-Packard HFBR14XX fiber optic transmitter and 50/125 m, 62.5/125 m, 100/ 140 m, and 200 m HCS(R) fiber optic cable. Consistent coupling into the receiver is assured by the lensed optical system (Figure 1). Response does not vary with fiber size 0.100 m. The HFBR-24X2 receiver incorporates an integrated photo IC containing a photodetector and dc amplifier driving an opencollector Schottky output transistor. The HFBR-24X2 is designed for direct interfacing to popular logic families. The absence of an internal pull-up resistor allows the open-collector output to be used with logic families such as CMOS requiring voltage excursions much higher than VCC. Housed Product Both the open-collector "Data" output Pin 6 and VCC Pin 2 are referenced to "Com" Pin 3, 7. The "Data" output allows busing, strobing and wired "OR" circuit configurations. The transmitter is designed to operate from a single +5 V supply. It is essential that a bypass capacitor (0.1 F ceramic) be connected from Pin 2 (VCC) to Pin 3 (circuit common) of the receiver. Unhoused Product PIN 1 2 3 4 FUNCTION VCC (5 V) COMMON DATA COMMON Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Lead Soldering Cycle Symbol TS TA Temp. Time SupplyVoltage Output Current Output Voltage Output Collector Power Dissipation Fan Out (TTL) 19 Min. -55 -40 VCC IO VO PO AV N -0.5 -0.5 Max. +85 +85 +260 10 7.0 25 18.0 40 5 Units C C C sec V mA V mW Reference Note 1 Note 2 Electrical/Optical Characteristics -40C to + 85C unless otherwise specified Fiber sizes with core diameter 100 m and NA 0.35, 4.75 V VCC 5.25 V Parameter Symbol Min. Typ.[3] Max. High Level Output Current IOH 5 250 Units A Low Level Output Voltage VOL 0.4 0.5 V High Level Supply Current ICCH 3.5 6.3 mA Low Level Supply Current ICCL 6.2 10 mA Equivalent N.A. Optical Port Diameter NA D 0.50 400 Conditions VO = 18 PR < -40 dBm IO = 8 mA PR > -24 dBm VCC = 5.25 V PR < -40 dBm VCC = 5.25 V PR > -24 dBm m Reference Note 4 Dynamic Characteristics -40C to +85C unless otherwise specified; 4.75 V VCC 5.25 V; BER 10-9 Parameter Symbol Min. Typ.[3] Max. Peak Optical Input Power PRH -40 Logic Level HIGH 0.1 Peak Optical Input Power PRL -25.4 -9.2 Logic Level LOW 2.9 120 -24.0 -10.0 4.0 100 Propagation Delay LOW tPLHR 65 to HIGH Propagation Delay HIGH tPHLR 49 to LOW Units dBm pk W pk dBm pk W pk dBm pk W pk ns ns Conditions P = 820 nm Reference Note 5 TA = +25C, IOL = 8 mA Note 5 IOL = 8 mA TA = 25C, PR = -21 dBm, Data Rate = 5 MBd Note 6 Notes: 1. 2.0 mm from where leads enter case. 2. 8 mA load (5 x 1.6 mA), RL = 560 . 3. Typical data at TA = 25C, VCC = 5.0 Vdc. 4. D is the effective diameter of the detector image on the plane of the fiber face. The numerical value is the product of the actual detector diameter and the lens magnification. 5. Measured at the end of 100/140 m fiber optic cable with large area detector. 6. Propagation delay through the system is the result of several sequentially-occurring phenomena. Consequently it is a combination of data-ratelimiting effects and of transmission-time effects. Because of this, the data-rate limit of the system must be described in terms of time differentials between delays imposed on falling and rising edges. 7. As the cable length is increased, the propagation delays increase at 5 ns per meter of length. Data rate, as limited by pulse width distortion, is not affected by increasing cable length if the optical power level at the receiver is maintained. CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 20 HFBR-24X6 Low-Cost 125 MHz Receiver Description The HFBR-24X6 fiber optic receiver is designed to operate with the Avago HFBR-14XX fiber optic transmitters and 50/125 m, 62.5/125 m, 100/140 m and 200 m HCS(R) fiber optic cable. Consistent coupling into the receiver is assured by the lensed optical system (Figure 1). Response does not vary with fiber size for core diameters of 100 m or less. The receiver output is an analog signal which allows follow-on circuitry to be optimized for a variety of distance/data rate requirements. Low-cost external components can be used to convert the analog output to logic compatible signal levels for various data formats and data rates up to 175 MBd. This distance/data rate tradeoff results in increased optical power budget at lower data rates which can be used for additional distance or splices. The HFBR-24X6 receiver contains a PIN photodiode and low noise transimpedance pre-amplifier integrated circuit. The HFBR-24X6 receives an optical signal and converts it to an analog voltage. The output is a buffered emitterfollower. Because the signal amplitude from the HFBR-24X6 receiver is much larger than from a simple PIN photodiode, it is less susceptible to EMI, especially at high signaling rates. For very noisy environments, the conductive or metal port option is recommended. A receiver dynamic range of 23 dB over temperature is achievable (assuming 10-9 BER). receiver from noisy host systems. Refer to AN 1038, 1065, or AB 78 for details. Housed Product 6 2 3&7 4 5 3 6 2 7 1 8 ANALOG SIGNAL VEE BOTTOM VIEW The frequency response is typically dc to 125 MHz. Although the HFBR-24X6 is an analog receiver, it is compatible with digital systems. Please refer to Application Bulletin 78 for simple and inexpensive circuits that operate at 155 MBd or higher. The recommended ac coupled receiver circuit is shown in Figure 12. It is essential that a 10 ohm resistor be connected between pin 6 and the power supply, and a 0.1 F ceramic bypass capacitor be connected between the power supply and ground. In addition, pin 6 should be filtered to protect the PIN NO. 1 INDICATOR PIN 1 2 3* 4 5 6 7* 8 FUNCTION N.C. SIGNAL VEE N.C. N.C. VCC VEE N.C. * PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER. PINS 1, 4, 5, AND 8 ARE ISOLATED FROM THE INTERNAL CIRCUITRY, BUT ARE ELECTRICALLY CONNECTED TO EACH OTHER. Unhoused Product PIN 1 2* 3 4* FUNCTION SIGNAL VEE VCC VEE 6 BIAS & FILTER CIRCUITS VCC POSITIVE SUPPLY 300 pF 2 VOUT ANALOG SIGNAL 5.0 mA 3, 7 VEE NEGATIVE SUPPLY Figure 11. Simplified schematic diagram. CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 21 VCC Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Lead Soldering Cycle Symbol TS TA Min. -55 -40 Max. +85 +85 +260 10 6.0 25 VCC Temp. Time Supply Voltage Output Current Signal Pin Voltage VCC IO VSIG -0.5 -0.5 Units C C C s V mA V Reference Note 1 Electrical/Optical Characteristics -40C to +85C; 4.75 V Supply Voltage 5.25 V, RLOAD = 511 , Fiber sizes with core diameter 100 m, and N.A. -0.35 unless otherwise specified Parameter Symbol Min. Typ.[2] Max. Units Conditions Responsivity RP 5.3 7 9.6 mV/W TA= 25C @ 820 nm, 50 MHz 4.5 11.5 mV/W @ 820 nm, 50 MHz RMS Output Noise VNO 0.40 0.59 mV Bandwidth Filtered Voltage @ 75 MHz PR = 0 W Equivalent Input Optical Noise Power (RMS) PN Optical Input Power (Overdrive) PR Output Impedance Zo dc Output Voltage Power Supply Current Equivalent N.A. Equivalent Diameter Vo dc IEE NA D -43.0 0.050 0.70 mV -41.4 0.065 -7.6 175 -8.2 150 dBm W dBm pk W pk dBm pk W pk 30 -4.2 -3.1 9 0.35 324 -2.4 15 V mA m Reference Note 3, 4 Figure 16 Note 5 Unfiltered Bandwidth PR = 0 W Bandwidth Filtered @ 75 MHz Figure 13 TA = 25C Figure 14 Note 6 Test Frequency = 50 MHz PR = 0 W RLOAD = 510 Note 7 CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 22 Dynamic Characteristics -40C to +85C; 4.75 V Supply Voltage 5.25 V; RLOAD = 511 , CLOAD = 5 pF unless otherwise specified Parameter Symbol Rise/Fall Time tr, tf 10% to 90% Pulse Width Distortion PWD Min. Overshoot Bandwidth (Electrical) Bandwidth - Rise Time Product BW Typ.[2] 3.3 Max. 6.3 Units ns Conditions PR = 100 W peak Reference Figure 15 0.4 2.5 ns PR = 150 W peak 2 % 125 0.41 MHz Hz * s PR = 5 W peak, tr = 1.5 ns -3 dB Electrical Note 8, Figure 14 Note 9 Note 10 Notes: 1. 2.0 mm from where leads enter case. 2. Typical specifications are for operation at TA = 25C and VCC = +5 V dc. 3. For 200 m HCS fibers, typical responsivity will be 6 mV/W. Other parameters will change as well. 4. Pin #2 should be ac coupled to a load 510 ohm. Load capacitance must be less than 5 pF. 5. Measured with a 3 pole Bessel filter with a 75 MHz, -3 dB bandwidth. Recommended receiver filters for various bandwidths are provided in Application Bulletin 78. 6. Overdrive is defined at PWD = 2.5 ns. 7. D is the effective diameter of the detector image on the plane of the fiber face. The numerical value is the product of the actual detector diameter and the lens magnification. 8. Measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform. 9. Percent overshoot is defined as: VPK - V100% ---------- x 100% V100% 10. The conversion factor for the rise time to bandwidth is 0.41 since the HFBR-24X6 has a second order bandwidth limiting characteristic. ( ) 0.1 F +5 V 10 6 30 pF 2 3&7 POST AMP LOGIC OUTPUT RLOADS 500 MIN. Figure 12. Recommended ac coupled receiver circuit. (See AB 78 and AN 1038 for more information.) CAUTION: The small junction sizes inherent to the design of these components increase the components' susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by ESD. 23 3.0 125 100 75 50 25 0 6.0 2.5 tr, tf - RESPONSE TIME - ns SPECTRAL NOISE DENSITY - nV/ HZ PWD - PULSE WIDTH DISTORTION - ns 150 2.0 1.5 1.0 0.5 0 0 50 100 150 200 250 300 FREQUENCY - MHZ Figure 13. Typical spectral noise density vs. frequency. 0 10 20 30 40 50 60 70 80 5.0 4.0 tf 3.0 2.0 1.0 -60 NORMALIZED RESPONSE 1.00 0.75 0.50 0.25 480 560 640 720 800 880 960 1040 - WAVELENGTH - nm Figure 16. Receiver spectral response normalized to 820 nm. For product information and a complete list of distributors, please go to our website: -20 0 20 40 60 80 Figure 15. Typical rise and fall times vs. temperature. 1.25 0 400 -40 TEMPERATURE - C PR - INPUT OPTICAL POWER - W Figure 14. Typical pulse width distortion vs. peak input power. tr www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries. Data subject to change. Copyright (c) 2007 Avago Technologies Limited. All rights reserved. Obsoletes 5988-3624EN AV02-0525EN June 15, 2007 100