Features * * * * * * * * Frequency Range 2.4 GHz to 2.5 GHz Supply Voltage 2.7 V to 3.6 V 21 dBm Linear Output Power for IEEE 802.11b Mode 3.5% EVM at 15.5 dBm Output Power for IEEE 802.11g Mode On-chip Power Detector with 20 dB Dynamic Range Power-down Mode and Biasing Control No External Components for Input Matching Low Profile Plastic Package QFN16 (4 x 4 x 0.9 mm) Benefits * * * * IEEE 802.11b WLAN IEEE 802.11g OFDM WLAN PC Cards, PCMCIA 2.4 GHz ISM Band Application Electrostatic sensitive device. Observe precautions for handling. Description 2.4-GHz SiGe Power Amplifier for 802.11b/g WLAN Systems T7031 Circuitry The PA's is designed for low current-consumption 802.11b and 802.11g multi-mode applications such as Mini-PCI and PCMCIA for portable devices. The low profile plastic package with internal input matching to 50 minimizes the PCB board-space and allows simplified integration with very few passive components. The on-chip power-detector provides a voltage linear to the output power while the standby/bias control logic provides power saving and shutdown as well as a linear adjustment of output power. The PA is realized as a two stage PA with internal interstage-matching and an open-collector output structure. Preliminary Process The power amplifier is designed in Atmel's Silicon-Germanium (SiGe) process and provides excellent linearity and noise performance, high gain as well as good poweradded efficiency. Rev. 4564E-WLAN-07/04 16 Interstage Matching NC 1 2 12 SiGe PA T7031 Standby/ biasing control Det. 11 10 GND V_DET_Out 3 9 4 V2_PA_Out 5 2 13 6 7 Interstage Matching 8 V2_PA_Out VCTRL Input Matching 14 V2_PA_Out GND 15 V2_PA_Out VCC PA_IN V1_PA V1_PA Figure 1. Block Diagram T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Pin Configuration V1_PA V1_PA PA_IN IN_MATCH Figure 2. Pinning QFN16 1 2 3 4 16 15 14 13 12 NC T7031 11 GND 10 V_DET_OUT GND on the Paddel 9 INT_MATCH 5 6 7 8 V2_PA_Out V2_PA_Out V2_PA_Out V2_PA_Out VCC GND VCTRL INT_MATCH Pin Description Pin Symbol Function 1 VCC Supply voltage 2 GND Ground 3 VCTRL 4 INT_MATCH Interstage matching (must not be connected) Power-up/biasing control voltage 5 V2_PA_Out Power amplifier output and supply voltage for 2nd power amplifier stage 6 V2_PA_Out Power amplifier output and supply voltage for 2nd power amplifier stage 7 V2_PA_Out Power amplifier output and supply voltage for 2nd power amplifier stage 8 V2_PA_Out Power amplifier output and supply voltage for 2nd power amplifier stage 9 INT_MATCH Interstage matching (must not be connected) 10 V_DET_OUT Power detector output 11 GND 12 NC 13 IN_MATCH 14 PA_IN Power amplifier input 15 V1_PA Supply voltage for 1st power amplifier stage 16 V1_PA Supply voltage for 1st power amplifier stage Slug - Ground Not connected Input matching (must not be connected) Ground 3 4564E-WLAN-07/04 Absolute Maximum Ratings Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Symbol Value Unit Supply voltage, no RF voltage applied VCC 6 V Supply current ICC 200 mA Junction temperature Tj 150 C Storage temperature TStg -40 to +125 C Input RF power PIN 12 dBm VCTRL 0 to 3 V Symbol Value Unit RthJA 45 K/W Symbol Value Unit Supply voltage range VCC 2.7 to 3.6 V Ambient temperature range Tamb -30 to +80 C Control voltage power up/down and biasing Note: The part may not survive all maximums applied simultaneously. Thermal Resistance Parameters Junction ambient Operating Range Parameters Electrical Characteristics No. Parameters 1.0 Supply voltage 1.1 Frequency Range 1.2 1.3 1.4 1.5 Control voltage range Current Consumption Test Conditions Pin Symbol Min. Typ. Max. Unit Type* VCC 2.7 3.3 3.6 V A f 2400 2500 MHz A PA operating mode VCTRL 1 2 V A Power-down Mode VCTRL Quiescent ICQ Power-down mode IPD 0.2 75 10 V A mA A A A *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 4 T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Electrical Characteristics - Unmodulated Carrier Test conditions (unless otherwise stated): VCC = 3.3 V, Frequency = 2.45 GHz, Tamb = 25C No. Parameters Test Conditions 2.0 Saturated output power For reference 2.1 P1dB output Power nd Pin Symbol Min. Typ. Max. Unit Type* PSAT 24 dBm A P1dB 23 dBm A 2fOUT 30 dB A 2.2 2 harmonic rejection POUT = 18 dBm, with external matching 2.3 Small signal gain ICQ, small signal condition GL 22 dB A 2.4 Reverse isolation ICQ, small signal condition ISOr 40 dB A 2.5 Input 50 VSWR ICQ, small signal condition VSWRin 2:1 C 2.6 Output 50 VSWR ICQ, small signal condition, with external matching VSWRout 2:1 C *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Electrical Characteristics - 11 Mbps CCK Modulation Test conditions (unless otherwise stated): VCC = 3.3 V, Frequency = 2.45 GHz, Tamb = 25 C, IEEE 802.11b conform 11 Mbps CCK modulation with gaussian transmit filtering No. Parameters Test Conditions Pin Symbol 3.0 Maximum linear output power ACPR1 33 dBc ACPR2 55 dBc PLIN 3.1 Linear power gain POUT = PLIN ACPR1 33 dBc ACPR2 55 dBc 3.2 Current Consumption POUT = PLIN ACPR1 33 dBc ACPR2 55 dBc Min. Typ. Max. Unit Type* 21 dBm A GL 22 dB A ICC 130 mA A *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Electrical Characteristics - 54 Mbps OFDM Modulation Test conditions (unless otherwise stated): VCC = 3.3 V, Frequency = 2.45 GHz, Tamb = 25 C, IEEE 802.11g conform 54 Mbps OFDM modulation, 0.7% EVM measurement equipment noise floor included in EVM measurement result. No. Parameters Test Conditions Pin Symbol 4.0 Error vector magnitude POUT = 15.5 dBm EVM 4.1 Linear power gain POUT = 15.5 dBm 4.2 Current consumption POUT = 15.5 dBm Min. Typ. Max. Unit Type* 3.5 % C GL 22 dB A ICC 85 mA A *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 5 4564E-WLAN-07/04 Power Detector Test conditions (unless otherwise stated): VCC = 3.3 V, Frequency = 2.45 GHz, Tamb = 25 C No. Parameters Test Conditions Pin 5.0 Detector voltage range POUT = 2 to 22 dBm 5.1 Settling time Symbol Min. VDET 0 Typ. tSET Max. Unit Type* 2 V A s C 0.5 *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Typical Operating Characteristics Figure 3. Typical Gain and Current versus Control Voltage Frequency = 2450 MHz, PIN = -40 dBm, VCC = 3.3 V 350 30 Gain 25 280 20 Gain (dB) 10 210 5 I3 0 140 I (mA) Iges 15 -5 -10 70 I1 -15 I2 -20 0 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 VCTRL (V) Figure 4. S-parameter, Magnitude 6 T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Figure 5. S-parameters, Magnitude and Phase Figure 6. Spectral Plot Conforming Compliance to 802.11b Spectral Mask (3/5 db Margin) at POUT = 21 dBm, VCC = 3.3 V, VCTRL = 1.56 V 7 4564E-WLAN-07/04 Figure 7. Frequency-sweep at PIN = -1.9 dBm, VCC = 3.3 V, VCTRL = 1.56 V (ACPR Limit), CW-mode 180 35 160 30 PAE 140 I3 25 120 20 I (mA) POUT (dBm), Voltage (V), Gain (dB), PAE (%) Iges 100 POUT Gain 15 80 60 10 40 I1 5 20 I2 0 2400 2410 2420 2430 2440 2450 2460 2470 2480 0 2500 2490 Frequency (MHz) Figure 8. VCTRL-sweep at Maximum Linear POUT (ACPR Limit), CW-mode, Frequency = 2450 MHz, PIN = -1.9 dBm, VCC = 3.3 V 360 PAE 25 300 20 240 POUT 15 10 180 Iges I3 Gain I (mA) POUT (dBm), Gain (dB), PAE (%) 30 120 I1 5 60 I2 0 0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 VCTRL (V) Figure 9. Error Vector Magnitude (EVM), Power Added Efficiency (PAE), Gain versus POUT 30 12 GAIN 10 20 8 15 6 EVM PAE EVM limit 3.5% 10 EVM (%) Gain (dB), PAE (%) 25 4 5 2 0 0 0 5 10 15 20 25 POUT (dBm) 8 T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Figure 10. Frequency-sweep at EVM = 3.5% (EVM limit), CW-mode PIN = -6.3 dBm, VCC = 3.3 V, VCTRL = 1.56 V 120 Iges 25 Gain 100 I3 80 20 POUT 15 60 PAE 10 I (mA) POUT (dBm), Gain (dB), PAE (%) 30 40 I1 5 20 I2 0 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 0 2500 Frequency (MHz) 30 350 Gain 25 20 280 15 10 5 210 Iges PAE I3 0 140 I (mA) POUT (dBm), Gain (dB), PAE (%) Figure 11. VCTRL-sweep at EVM = 3.5% (EVM limit), CW-mode Frequency = 2450 MHz, PIN = -6.3 dBm, VCC = 3.3 V -5 -10 -15 70 I1 POUT I2 -20 0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 VCTRL (V) Figure 12. Power-sweep, CW-mode Frequency = 2450 MHz, VCC = 3.3 V, VCTRL = 1.56 V 40 320 PAE 280 30 240 GAIN 25 200 20 160 15 120 Iges 10 80 I1 I3 5 40 I2 0 -20 I (mA) Gain (dB), PAE (%) 35 -15 -10 -5 0 5 10 15 20 25 0 30 POUT (dBm) 9 4564E-WLAN-07/04 Figure 13. Power Detector Voltage versus POUT (Unmodulated Carrier), CW-Mode Frequency = 2450 MHz, VCC = 3.3 V, VCTRL = 1.56 V 2.0 1.8 Detector Voltage (V) 1.6 1.4 VDET 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -20 -15 -10 -5 0 5 10 15 20 25 30 POUT (dBm) Figure 14. Power Detector Response Rising Edge 10 T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Figure 15. Power Detector Response Falling Edge Evaluation Board Schematic Figure 16. Schematic of the Evaluation Board V2_PA V_DET_Out C7 C13 C12 NC NC 12 NC C1 PA_IN 13 11 SiGe PA T7031 10 9 L2 Det. 8 14 7 15 6 T1* T2* T3* C10 PA_Out C11 L1 V1_PA C4 C3 5 Standby/ biasing control 16 C2 1 2 3 4 NC C14 VCC * microstrip line C5 C8 microstrip line length width 3.0 mm 0.64 mm T1 T2 1.7 mm 0.64 mm 2.4 mm 0.64 mm T3 C6 C9 metal layer distance to ground: 360 m CU metal layer thickness: 35 m VCTRL 11 4564E-WLAN-07/04 Evaluation Board Bill of Materials Table 1. Bill of Materials of the Evaluation Board Component Reference Value Size Capacitor C1 4p7 0603 Capacitor C2 56p 0603 Capacitor C3 1n 0603 Capacitor Capacitor Capacitor Capacitor Note: (1) 1 0603 4p7 0603 C6 (1) 1n 0603 C7 (1) 1 0603 C4 C5 Capacitor C8 4p7 0603 Capacitor C9(1) 1n 0603 Capacitor C10 4p7 0603 Capacitor C11 2p2 0603 Capacitor C12 56p 0603 Capacitor C13 1n 0603 Capacitor C14(1) 1 0603 Inductor L1 22n 0603 Inductor L2 15n 0603 1. Can be omitted at optimum DC supply Evaluation Board Layout Figure 17. Layout of the Evaluation Board 12 T7031 [Preliminary] 4564E-WLAN-07/04 T7031 [Preliminary] Evaluation Board Set-up Institutions After connection of all cables (RF and DC): * VCC, V1, V2 = 3.3 V * Increase VCTRL until 75 mA quiescent current without RF signal is reached (~ 1.55 V) * Increase input power until desired linear output power is reached 13 4564E-WLAN-07/04 Ordering Information Extended Type Number Remarks MOQ T7031-PEP QFN16 - 4 x 4 Taped and reeled 1500 pcs. T7031-PEQ QFN16 - 4 x 4 Taped and reeled 6000 pcs. T7031-PEPM QFN16 - 4 x 4 Taped and reeled Pb free, halogen free 1500 pcs. T7031-PEQM QFN16 - 4 x 4 Taped and reeled Pb free, halogen free 6000 pcs. Evaluation board 1 Demoboard-T7031 Package - Package Information 14 T7031 [Preliminary] 4564E-WLAN-07/04 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. 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