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RFFM4201

DS121008

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

Pin Names and Descriptions

Pin

Name

Description

1VRX

Switch control for Rx mode

2RX

RF output is internally matched to 50

 and DC blocked.

3GND

Ground connection

4PDET

Power detector provides an output voltage proportional to the RF output power level.

5VREG3

Third stage bias voltage. This pin requires regulated supply for best performance.

6VREG2

Second stage bias voltage. This pin requires regulated supply for best performance.

7VREG1

First stage bias voltage. This pin requires regulated supply for best performance.

8PDOWN

to power up. If function is not desired, pin may be connected to VREG.

9GND

Ground connection

10

TXIN

RF input is internally matched to 50

 and DC blocked.

11

GND

Ground connection

12

GND

Ground connection

13

VBIAS

Supply voltage for the bias reference and control circuits.

14

VCC1

This pin is connected internally to the collector of the 1st stage RF device. To achieve specified

performance, the layout of these pins should match the recommended land pattern.

15

GND

Ground connection

16

VCC2

This pin is connected internally to the collector of the 2nd stage RF device. To achieve specified

performance, the layout of these pins should match the recommended land pattern.

17

VCC3

This pin is connected internally to the collector of the 3rd stage RF device. To achieve specified

performance, the layout of these pins should match the recommended land pattern.

18

GND

Ground connection

19

GND

Ground connection

20

VTX

Switch control for Tx mode

21

GND

Ground connection

22

GND

Ground connection

23

ANT

RF Output is internally matched to 50

 and DC blocked.

24

GND

Ground connection

PkG Base

GND

Ground connection