2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
1
1
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1
Ordering Information1,2
Part Number Package
XP1050-QJ-0G00 bulk quantity
XP1050-QJ-0G0T tape and reel
XP1050-QJ-EV1 evaluation module
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Functional Schematic
Pin Configuration3
Pin No. Pin Name Function
1 VD1 Drain 1 Bias
2-3 N/C No Connection
4 RFIN RF Input
5 VG1 Gate 1 Bias
6 VG2 Gate 2 Bias
7-11 N/C No Connection
12 GND Ground
13 VREF Power Det. Ref.
14 VDET Power Detector
15 RFOUT RF Output
16-17 N/C No Connection
18 VD2 Drain 2 Bias
19-24 N/C No Connection
254 Pad Ground
RFIN
15
16
RFOUT
VD1
11
7
20
N/C
N/C N/C
6
12
24 19
N/C
VG1
VG2
N/C N/C N/C GND
VD2
N/C
VDET
VREF
N/C
N/C N/C
N/C N/C N/C N/C
181
13
Features
15.5 dB Small Signal Gain
47 dBm Third Order Intercept Point (OIP3)
2 W P1dB
Integrated Power Detector
Lead-Free 6 mm 24-lead QFN Package
RoHS* Compliant and 260°C Reflow Compatible
Description
The XP1050-QJ is a packaged linear power
amplifier that operates from 7.1-8.5 GHz. The device
provides 15.5 dB gain and 47 dBm Output Third
Order Intercept Point (OIP3). The packaged
amplifier comes in an industry standard, fully molded
6 mm QFN package and is comprised of a two stage
power amplifier with an integrated, temperature
compensated on-chip power detector. The device
includes on-chip ESD protection structures and DC
by-pass capacitors to ease the implementation and
volume assembly of the packaged part.
The device is specifically designed for use in 7 and 8
GHz Point-to-Point radio applications.
External DC blocks are required. See the reliability
note on page 3 for more information.
3. It is recommended to connect unused pins to ground.
4. The exposed pad centered on the package bottom must be
connected to RF and DC ground.
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
2
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
2
Electrical Specifications: Freq: 7.1 - 8.5 GHz, VDD = 7 V, IDQ5 = 1350 mA, TA = +25C
Parameter Units Min. Typ. Max.
Gain @ 6 dBm PIN dB 13.5 15.5 18.5
Input Return Loss dB — 10 —
Output Return Loss dB — 8 —
P1dB dBm — 33 —
Psat6 dBm — 34 —
Output IP3 @ 6 dBm PIN dBm 43.5 47
Delta VDET (VDET - VREF) @ 6 dBm PIN, 8.5 GHz V — -0.88 —
Detector Bias Voltage VDC 5
Gate Bias Voltage (VGG1,2) VDC -0.7
5. Adjust VGG1 and VGG2 between –1.4 and –0.4 V to achieve specified IDQ. VGG1 and VGG2 should be the same voltage.
6. For reference only. Large signal operation is only recommended under pulsed conditions. Keep output power below P1dB for C.W.
operation.
Maximum Operating Ratings7,8,9
Parameter Absolute Maximum
Input Power +24 dBm
Drain Supply Voltage +8 Volts
Junction Temperature10 +160 °C
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Handling Procedures
Please observe the following precautions to avoid
damage:
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
class 1A devices.
Absolute Maximum Ratings11,12
Parameter Absolute Max.
Supply Gate Voltage -2.5 V
Supply Current (ID1) 600 mA
Supply Current (ID2) 1200 mA
Detector Pin 6 V
Detector Ref Pin 6 V
Continuous Power
Dissipation @ 85ºC 11.2 W
Junction Temperature 175ºC
11. Channel temperature directly affects a device’s MTTF.
Channel temperature should be kept as low as possible to
maximize lifetime.
12. For saturated performance it recommended that the sum of
(2*VDD + abs(VGG)) <17
7. Exceeding any one or combination of these limits may
cause permanent damage to this device.
8. M/A-COM Technology Solutions does not recommend
sustained operation near these survivability limits.
9. Operating at nominal conditions with TJ ≤ 160°C will ensure
MTTF > 1 x 106 hours.
10. Junction Temperature (TJ) = TC + ӨJC * ((V * I) - (POUT - PIN))
Typical thermal resistance (ӨJC) = 6.8°C/W
a) For TC = 25°C,
TJ = 88°C @ 7 V, 1350 mA, POUT = 21.5 dBm, PIN = 6 dBm
b) For TC = 85°C,
TJ =149°C @ 7 V, 1350 mA, POUT = 20 dBm, PIN = 6 dBm
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
3
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
3
Important Reliability Information:
The input and output capacitors on the die may be damaged through handling and assembly processes.
External DC blocks are recommended on the RF input and output lines on the PC board. If the output
capacitor shorts due to ESD damage, the part will continue to function with slightly degraded performance. IP3
may decrease by approximately 1.5 dB. If the input capacitor shorts due to ESD damage, the part will continue
to function with a slight shift in input return loss. Once shorted, the capacitor should remain shorted for the
standard product lifetime. The external DC blocks are needed to maintain the bias point on the part.
Even though the ESD rating using the Human Body Model is Class 1A, it is recommended to treat this part as a
Class 0 part. The rate of shorted capacitors due to ESD damage can be in the range of 10%. Shorted
capacitors on this part are not subject to the warranty because the part continues to operate reliably with only
slightly reduced performance.
Recommended Layout
MATERIAL: RO4350B, 10 mil.
CAPACITORS: 1µF (0805), 1000 pF (0402)
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
4
4
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Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
4
App Note [1] Biasing - As shown in the Pin Designations table, the device is operated by biasing Vd1,2 at 7.0V.
The nominal drain currents are Id1=450 mA and Id2=900 mA. This ratio of 1:2 between the first and second
stage drain currents should be maintained for best linearity. The typical gate voltages needed are -0.9V. The
negative gate voltage must be applied prior to applying the positive drain voltage.
The XP1050-QJ is recommended for linear applications only. Active bias is recommended to keep the currents
known and constant, and to maintain the best performance over temperature. Depending on the supply voltage
available and the power dissipation constraints, the bias circuit may be a single transistor or a low-power
operational amplifier, with a low value resistor in series with the drain supply used to sense the current.
App Note [2] PWB Layout Considerations - It is recommended to provide 1000 pF decoupling capacitors as
close as possible to the pins of the device, with additional larger decoupling capacitors further away. For
example, in the Recommended Layout, there are 1000 pF 0402 capacitors placed very near the device pins,
and 1uF 0805 capacitors placed further away (the gate line shown without a 1uF capacitor (pin 6) would have
this capacitor further away on the other side of the screw).
Thermal management of the device is essential. It is recommended that measures such as copper-filled vias
under the package, and post/screws for top to bottom heat transfer are used (see Recommended Layout shown
below). Adequate heat-sinking under the PWB is necessary in maintaining the package base at a safe operating
temperature.
App Note [3] Power Detector - As shown in the schematic at right, the power detector is implemented by
providing +5V bias and measuring the difference in output voltage with standard op-amp in a differential mode
configuration.
Application Schematic
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
5
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
5
Typical Performance Curves: VDD = 7 V, IDQ = 1350 mA
Gain vs. Frequency, +25°C Input Return Loss vs. Frequency, +25°C
Output Return Loss vs. Frequency, +25°C Gain vs. Output Power, +25°C
Gain vs. Output Power, -40°C Gain vs. Output Power, +85°C
10
12
14
16
18
20
10 12 14 16 18 20 22 24 26 28 30 32 34 36
Output Power (dBm)
Gain (dB)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
10
12
14
16
18
20
10 12 14 16 18 20 22 24 26 28 30 32 34 36
Output Power (dBm)
Gain (dB)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
10
12
14
16
18
20
10 12 14 16 18 20 22 24 26 28 30 32 34 36
Output Power (dBm)
Gain (dB)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
10
12
14
16
18
20
7.0 7.5 8.0 8.5 9.0
Frequency (GHz)
Gain (dB)
-30
-25
-20
-15
-10
-5
0
7.0 7.5 8.0 8.5 9.0
Frequency (GHz)
Input Return Loss (dB)
-15
-10
-5
0
7.0 7.5 8.0 8.5 9.0
Frequency (GHz)
Output Return Loss (dB)
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
6
6
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
6
Typical Performance Curves: VDD = 7 V, IDQ = 1350 mA
Output IP3 vs. Output Power, +25°C Output IP3 vs. Output Power, -40°C
Output IP3 vs. Output Power, +85°C Detector Voltage (VREF - VDET) vs. Output Power, +25°C
Detector Voltage (VREF - VDET) vs. Output Power, -40°C Detector Voltage (VREF - VDET) vs. Output Power, +85°C
1
10
100
1000
10000
-10 -5 0 5 10 15 20 25 30 35
Output Power (dBm)
Detector Voltage (mV)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
1
10
100
1000
10000
-10 -5 0 5 10 15 20 25 30 35
Output Power (dBm)
Detector Voltage (mV)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
1
10
100
1000
10000
-10 -5 0 5 10 15 20 25 30 35
Output Power (dBm)
Detector Voltage (mV)
Freq(GHz)=7.1
Freq(GHz)=7.5
Freq(GHz)=8.1
Freq(GHz)=8.5
40
42
44
46
48
50
52
14 16 18 20 22 24 26 28 30
Output Power (dBm)
Output IP3 (dBm)
Freq(GHz)=7.1, Vdd(V) = 7
Freq(GHz)=7.7, Vdd(V) = 7
Freq(GHz)=7.9, Vdd(V) = 7
Freq(GHz)=8.5, Vdd(V) = 7
40
42
44
46
48
50
52
14 16 18 20 22 24 26 28 30
Output Power (dBm)
Output IP3 (dBm)
Freq(GHz)=7.1, Vdd(V) = 7
Freq(GHz)=7.7, Vdd(V) = 7
Freq(GHz)=7.9, Vdd(V) = 7
Freq(GHz)=8.5, Vdd(V) = 7
40
42
44
46
48
50
52
14 16 18 20 22 24 26 28 30
Output Power (dBm)
Output IP3 (dBm)
Freq(GHz)=7.1, Vdd(V) = 7
Freq(GHz)=7.7, Vdd(V) = 7
Freq(GHz)=7.9, Vdd(V) = 7
Freq(GHz)=8.5, Vdd(V) = 7
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
7
7
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
7
† Reference Application Note S2083 for lead-free solder reflow recommendations.
Meets JEDEC moisture sensitivity level 3 requirements.
Plating is 100% matte tin over copper.
Lead-Free 6 mm 24-Lead PQFN†
2.5 W Power Amplifier
7.1 - 8.5 GHz
Rev. V1
XP1050-QJ
8
8
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
8
M/A-COM Technology Solutions Inc. All rights reserved.
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products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
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WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
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