RF2347PCBA datasheet(3/8 Pages) RFMD

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RF2347

Rev A5 991207

Function

Description

Interface Schematic

1PD

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

current. See plots for bias current settings.

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=2.8 V is 2.0mA typical

and 3.0mA Max (@ VPD=2.9V).

2NC

No connection. This pin is typically left unconnected or grounded.

3RF IN

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

Ω at 836 MHz.

4GND1

Ground connection. Keep traces physically short and connect immedi-

ately to ground plane for best performance.

5NC

See pin 2. This pin is typically grounded.

6GND2

Ground connection. Keep traces physically short and connect immedi-

ately to ground plane for best performance.

7RF OUT

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

biased to either VCC or pin 7 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.

8GND2

See pin 6.

To Bias

Circuit

RF OUT

RF2347PCBA Datasheet(PDF) 3 Page - RF Micro Devices