RF2364PCBA datasheet(3/10 Pages) RFMD

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4-359

RF2364

Rev A5 020827

Function

Description

Interface Schematic

1RF IN

RF input pin. This pin is DC coupled and matched to 50

Ω.

2GND1

Ground connection. Keep traces physically short and connect immedi-

ately to ground plane for best performance.

VPD

For low noise amplifier applications, this pin is used to control the bias

current. See plots for bias current settings. An external resistor (R1)

can be used to set the bias current for any VPD voltage (See Applica-

tion Note).

For driver amplifier applications, this is the Power Down pin for the IC.

VPD=2.8V + 0.1V is required for proper operation. VPD< 0.9V turns off

the Part. External RF bypassing is required. The trace length between

the pin and the bypass capacitors should be minimized. The ground

side of the bypass capacitors should connect immediately to ground

plane. Nominal current required for VPD=2.8V is 2.0mA typical and

3.0mA Max (@ VPD=2.9V).

4GND2

Ground connection. Keep traces physically short and connect immedi-

ately to ground plane for best performance.

5RF OUT

Amplifier Output pin. This pin is an open-collector output. It must be

biased to either VCC or pin 4 through a choke or matching inductor.

This pin is typically matched to 50

Ω with a shunt bias/matching induc-

tor and series blocking/matching capacitor. Refer to application sche-

matics.

RF IN

RF OUT

To Bias

Circuit

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