SXA-289 Просмотр технического описания (PDF) - Stanford Microdevices
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SXA-289 Datasheet PDF : 6 Pages
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1960 MHz Application Circuit
SXA-289 5-2000 MHz Power Amplifier
Voltage Feed Resistor Bias Circuit (for > 7V supply)
390 Ω
180 Ω
0.1 µF
(SIZE A)
Vs
Rbias
22pF
1000pF
22nH
22nH
Z=50Ω, 45.5°
68pF
68 pF
SXA-289
1.8 pF
1960 MHz Schematic
Recommended Bias Resistor Values
Supply Voltage(Vs) 7V 8V 10V 12V
Rbias (Ohms)
18
27
47
62
Power Ratings 0.5W 1.0W 1.5W 2.0W
RFin
Rbias
390 Ohms
180 Ohms
68pF
22nH
0.1uF
1000pF
22pF
RFout
22nH
68pF
SXA-289
1.8pF
STANFORD MICRODEVICES
SOT-89 Eval Board
ECB-101499 Rev A
1960 MHz Evaluation Board Layout
Active Current Feedback Bias Circuit (for 5V supply)
0.1 µF
(SIZE A)
Vs = 5V
22 pF
220 Ω
1000 pF
2 (Rohm)
UMZ1N
4
6
1
5
1.8 KΩ
3
750Ω
Rbias=4.3 Ω
Vdev
22nH
Z=50Ω, 45.5°
68pF
68 pF
SXA-289
1.2 pF
1960 MHz Schematic
Frequency
1960 M Hz
Small Signal Gain (dB)
14.9
Input Return Loss (dB)
-12.1
Output IP3 (dBm)
38.0*
P1dB(dBm)
23.3
*Note: IP3 performance degraded due to lower
(4.5V) device voltage.
UMZ1N
RF IN
68pF
0.1 uF
22pF
VCC
220Ω
1000pF
1.8KΩ
1
4.3Ω
22nH
GND
RF OUT
750Ω
1.2pF
68pF
NOTE: Reference Application Note AN-026 for more
information on Active Current Feedback Bias Circuit.
ALL COMPONENTS 0603 UNLESS NOTED OTHERWISE
STANFORD MICRODEVICES
XAMP EVALUATION BOARD
ECB-101872 Rev A SOT-89
1960 MHz Active Bias Evaluation Board Layout
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
5
http://www.stanfordmicro.com
EDS-100622 Rev E
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