RF2374
Pin
1
Function
RF IN
Description
Interface Schematic
RF input pin. This part is designed such that 50Ω is the optimal source
impedance for best noise figure. Best noise figure is achieved with only a
series capacitor on the input.
To Bias
Circuit
RF OUT
RF IN
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
2
3
GND1
VREF
For low noise amplifier applications, this pin is used to control the bias cur-
VREF
rent. An external resistor can be used to set the bias current for any V
BIAS
voltage. This device will have good gain and noise figure with I as low as
CC
3mA.
This pin selects high gain and bypass modes.
Gain Select<0.8V, high gain.
Gain Select>1.6V, low gain.
4
5
GAIN SELECT
GND2
See GND1.
Amplifier output pin. This pin is an open-collector output. It must be biased
6
RF OUT
to V through a choke or matching inductor.
CC
Not connected.
Not connected.
7
8
NC
NC
This pad should be connected to the ground plane by vias directly under
the device.
Pkg
Gnd
GND
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.
DS140519
5 of 15
RFMD [ RF MICRO DEVICES ]
