2-143
RF2145
Rev B5 010329
2
Pin
Function
Description
Interface Schematic
1PC
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
obtainable over the full range. Approximately 15mA current is drawn
into this pin at full power.
2GND
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.
3GND
Same as pin 2.
4VCC1
Power supply pin for the first stage. Also provides tuning for interstage
match.
5RF IN
RF input. This input is DC coupled, so an external blocking capacitor is
required if this pin is connected to a DC path.
Seepin 4schematic.
6GND
Same as pin 2.
7GND
Same as pin 2.
8NC
No connection.
9NC
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.
13
RF OUT
Same as pin 12.
14
GND
Same as pin 2.
15
GND
Same as pin 2.
16
NC
No connection.
PC
To RF
Stages
RF IN
VCC1
From Bias
Stages
RF OUT
From Bias
Stages
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