SXH-189 Просмотр технического описания (PDF) - Stanford Microdevices
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SXH-189 Datasheet PDF : 6 Pages
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850 MHz Application Circuit
PPrreelilmimininaarryy
SXH-189 5-2000 MHz Power Amplifier
Voltage Feed Resistor Bias Circuit (for > 7V supply)
390
0.1 F
(SIZE A)
68pF
Vs
Rbias
180
1000pF
33 nH
33 nH
100 pF
100 pF
Z=50, 12.9°
5.6 pF
SXH-189
850 MHz Schematic
Recommended Bias Resistor Values
Supply Voltage(Vs) 7V 8V 10V 12V
Rbias (Ohms)
18 27 47 62
Power Rating
0.5W 1.0W 1.5W 2.0W
RFin
Rbias
390 Ohms
180 Ohms
100pF
33nH
0.1uF
1000pF
100pF
RFout
33nH
100pF
5.6pF
SXH-189
STANFORD MICRODEVICES
SOT-89 Eval Board
ECB-101499 Rev A
850 MHz Evaluation Board Layout
Active Current Feedback Bias Circuit (for 5V supply)
0.1 F
(SIZE A)
Vs = 5V
68 pF
220
6
(Rohm)
2 UMZ1N
15
1000 pF
4
1.8 K9
3
7509
100 pF
Z=50, 12.9°
5.6 pF
Rbias=4.3
Vdev
33 nH
100 pF
SXH-189
850 MHz Schematic
Frequency
850 MH z
Small Signal Gain (dB)
Input Return Loss (dB)
20.0
-22.8
Output IP3 (dBm)
P1dB (dBm)
37.7*
23.0
*Note: IP3 performance degraded due to lower
(4.5V) device voltage.
UMZ1N
RF IN
0.1 uF 68pF
VCC
220
1000pF
1.8K
1
4.3
33nH
100pF
750
5.6pF
GND
RF OUT
100pF
NOTE: Reference Application Note AN-023 for more
information on Active Current Feedback Bias Circuit.
ALL COMPONENTS 0603 UNLESS NOTED OTHERWISE
STANFORD MICRODEVICES
XAMP EVALUATION BOARD
ECB-100xxx- SOT-89
850 MHz Active Bias Evaluation Board Layout
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
4
http://www.stanfordmicro.com
EDS-101247 Rev D
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