RF2381
Pin
1
Function
RF OUT
Description
Interface Schematic
RF output pin. This pin is DC-coupled and requires V through a bias
inductor sized accordingly to provide a high pass transformation with a
series capacitor.
CC
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
2
3
GND
GC
Analog gain control pin. This pin controls the gain of the IC. Minimum gain
occurs at V <0.4V and maximum gain is achieved with V =2.0V. 50dB
GC
GC
of linear gain control with little variation of input P
is available.
1dB
RF input pin. This pin is DC-coupled.
4
5
RF IN
GND
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Power supply. This pin should be connected to a regulated supply and
requires a series inductor and 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.
6
VCC
Package Drawing
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A2 DS060907
5 of 10
RFMD [ RF MICRO DEVICES ]
