RF2145PCBA Просмотр технического описания (PDF) - RF Micro Devices
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RF2145PCBA Datasheet PDF : 6 Pages
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RF2145
Pin Function Description
Interface Schematic
1
PC
Power control pin. This also provides power down when VPC is less
than +0.5V. Full power is achieved at 2.5V, and >45dB of gain control is
PC
obtainable over the full range. Approximately 15mA current is drawn
into this pin at full power.
To RF
Stages
2
GND
Ground connection. This pin should be connected to the ground plane
through a short path and may be combined with the ground plane from
Pins 3, 6, 7, 10, 11, 14, and 15. All four of these wide leads are tied
together internally to provide a low-inductance and low thermal resis-
tance path to external ground. Ground vias should be placed as close
as possible to each ground lead.
3
GND
Same as pin 2.
4
VCC1
Power supply pin for the first stage. Also provides tuning for interstage
match.
2
VCC1
RF IN
From Bias
Stages
5
RF IN
RF input. This input is DC coupled, so an external blocking capacitor is See pin 4 schematic.
required if this pin is connected to a DC path.
6
GND
Same as pin 2.
7
GND
Same as pin 2.
8
NC
No connection.
9
NC
No connection.
10
GND
Same as pin 2.
11
GND
Same as pin 2.
12
RF OUT RF output pin. Bias is also fed to the final stage through this wide lead.
External matching is most easily achieved with a series transmission
line and shunt capacitors, as shown in the application schematic.
RF OUT
13
RF OUT Same as pin 12.
14
GND
Same as pin 2.
15
GND
Same as pin 2.
16
NC
No connection.
From Bias
Stages
Rev B5 010329
2-143
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