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Preliminary
4-186
RF2369
Rev A3 010720
4
Pin
Function
Description
Interface Schematic
1VREF/PD
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
VPD voltage.
2
GND1
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
3RF IN
RF input pin.
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 typi-
cally matched to 50
Ω with a shunt bias/matching inductor and series
blocking/matching capacitor. Refer to application schematics.
5
GND2
LNA emittance inductance. Total inductance is comprised of
package+bondwire+ stripline (L1) on PCB.
6
SELECT
This pin selects high gain and bypass.
Select < 0.8V, high gain.
Select > 1.8V, low gain.
VREF/PD
RF IN
RF OUT
To Bias
Circuit
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