RF2377(Rev_A9) 데이터 시트보기 (PDF) - RF Micro Devices
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RF2377 Datasheet PDF : 8 Pages
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RF2377
Pin Function Description
Interface Schematic
1
RF OUT RF output pin. This pin is DC coupled and requires VCC through a bias
inductor sized accordingly to provide a high pass transformation with a
series capacitor.
2
GND
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
3
GC
Analog gain control pin. This pin controls the gain of the IC. Minimum
gain occurs at VGC<0.4V and maximum gain is achieved with
VGC=2.0V. 50dB of linear gain control with little variation of input P1dB
is available.
4
RF IN
RF input pin. This pin is DC coupled.
5
GND
Ground connection. Keep traces physically short and connect immedi-
4
6
VCC
ately to ground plane for best performance.
Power supply. This pin should be connected to a regulated supply and
requires a bypass capacitor. Voltage is supplied through this pin to the
first stage collector; this voltage also controls the bias. Gain may be
tuned by adjusting the value of the feed inductor.
Application Schematic
RF IN
VCC
100 pF
4.7 nH
47 nF
4
3
5 ATT
ATT
2
6
1
Note orientation of
package in this schematic.
47 nH
1 pF
3.3 nH
GC
RF OUT
VCC
W-CDMA Application Schematic
RF IN
VCC
2.2 nH
15 pF
0.5 pF
4.7 nH
29 nH
15 pF
4
3
5 ATT
ATT
2
6
1
Note orientation of
package in this schematic.
1.2 pF
47 nH
2.7 nH
29 nH
15 pF 1 uF
GC
RF OUT
VCC
4-46
Rev A9 010411
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