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1-3
RF2370
Rev A4 050727
Pin
Function
Description
Interface Schematic
1BIAS
For low noise amplifier applications, this pin is used to control the bias
current. An external resistor can be used to set the bias current for any
VBIAS voltage.
2GND1
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
3RF IN
RF input pin. This part is designed such that 50
Ω is the optimal source
impedance for best noise figure. Best noise figure is achieved with only
a series capacitor on the input.
4RF OUT
Amplifier output pin. This pin is an open-collector output. It must be
biased to VCC through a choke or matching inductor. This pin is
matched to 50
Ω with a shunt L, series L topology enhances to stability
of the device by reducing the high frequency gain above 6GHz.
5GND2
See GND1.
6
GAIN
SELECT
This pin selects high gain and bypass modes.
Gain Select<0.8V, high gain.
Gain Select>1.8V, low gain.
A series resistor of 100
Ω is required on this pin to enhance stability.
VBIAS
RF IN
RF OUT
To Bias
Circuit
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