SXT-289 Просмотр технического описания (PDF) - Stanford Microdevices
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SXT-289 Datasheet PDF : 8 Pages
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2450 MHz Application Circuit
SXT-289 1800-2500 MHz Power Amplifier
Note: Circuit tuned for Output IP3
Voltage Feed Resistor Bias Circuit (for > 7V supply)
0.1 µ F
(SIZE A)
Vs
Rbias
18pF
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
390 Ω
180 Ω
1000pF
15 nH
15 nH
Z=50 Ω, 56 °
39pF
RFin
RbiaS
390 Ohms
180 Ohms
39pF
15nH
0.1uF
1000pF
18pF
RFout
15nH
39pF
39pF
SXT-289
2450 MHz Schematic
1.0 pF
SXT-289
1.0pF
STANFORD MICRODEVICES
SOT-89 Eval Board
ECB-101499 Rev A
2450 MHz Evaluation Board Layout
Active Current Feedback Bias Circuit (for 5V supply)
Frequency
2450 MHz
Vs = 5V
Small Signal Gain (dB) 14.6
0.1 µ F
(SIZE A)
22 pF
Output IP3 (dBm)
P1dB (dBm)
39.7*
23.7
*Note: IP3 performance degraded due to lower
(4.5V) device voltage.
220 Ω
6
1000 pF
2
(Rohm)
4
1 UMZ1N 5
1.8K Ω
3
750 Ω
4.3 Ω
15 nH
39pF
Z=50 Ω, 40.9 °
0.1 uF
22pF
220 Ω
1000pF
UMZ1N
1
1.8K Ω
4.3 Ω
15nH
39pF
SXT-289
1.0 pF
39pF
750 Ω
39pF
1.0p
F
2450 MHz Schematic
STANFORD MICRODEVICES
XAMP EVALUATION BOARD
ECB-101872 Rev A SOT-89
NOTE: Reference Application Note AN-026 for more
information on Active Current Feedback Bias Circuit.
2450 MHz Evaluation Board Layout
ALL COMPONENTS 0603 UNLESS NOTED OTHERWISE
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
7
http://www.stanfordmicro.com
EDS-101157 Rev D
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