SXT-289 查看數據表（PDF） - Sirenza Microdevices => RFMD
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SXT-289 Datasheet PDF : 9 Pages
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SXT-289 1800-2500 MHz Power Amplifier
Active Current Feedback Bias Circuit (for 5V supply)
Note: Circuit Optimized for Output IP3
Frequency
1960 MHz 2140 MHz 2450 MHz
Vs = 5V
Small Signal Gain (dB)
Output IP3 (dBm)
15.3
39.7*
15.0
39.2*
14.6
39.7*
C3
C4
C5
P1dB (dBm)
23.8
23.0
23.7
*Note: IP3 performance degraded due to lower
(4.5V) device voltage.
R1
2 U1
6
1
R2
4
5
3
R3
Rbias
L1
C7
Z=50 Ω, EL2
C1
Z=50 Ω, EL1
C6
SXT-289
C2
Schematic
Ref. Des. 1960 MHz 2140 MHz
C1, C7
39pF
39pF
C2
0.5pF
-
C3
0.1uF
0.1uF
C4
1000pF 1000pF
C5
22pF
22pF
C6
1.0pF
1.0pF
C6 Position
1
2
L1
15nH
15nH
R1
220 Ohm 220 Ohm
R2
1.8KOhm 1.8KOhm
R3
750 Ohm 750 Ohm
Rbias
4.3 Ohm 4.3 Ohm
U1
UMZ1N UMZ1N
EL1
13.5°
-
EL2
35.5°
49.8°
2450 MHz
39pF
-
0.1uF
1000pF
22pF
1.0pF
3
15nH
220 Ohm
1.8KOhm
750 Ohm
4.3 Ohm
UMZ1N
-
40.9°
Part Number
Rohm MCH18 series
Rohm MCH18 series
Matsuo 267M3502104K
Rohm MCH18 series
Rohm MCH18 series
Rohm MCH18 series
Toko LL1608-FS series
Rohm MCR03 series
Rohm MCR03 series
Rohm MCR03 series
Rohm MCR03 series
Rohm
C3 C4 C5
R1
Rbias
U1
R2
L1
1
C1
R3
C7
C2
SXT-289
31 2
C6
Sirenza Microdevices
ECB-101872 Rev. B
SOT-89 Active Bias
Eval Board
Evaluation Board Layout
NOTE: Reference Application Note AN-026 for more information on Active Current Bias Circuit.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
8
http://www.sirenza.com
EDS-101157 Rev G
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