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RF6509

DS121128

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

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

Pin

Function

Description

1GND

Ground.

2RX Filter

Input

RF output to enter the Rx filter (if used), 50

 nominal impedance.

3V2S2

Logic input to the Tx Switch arm 2 , selects/deselects thru path if Logic high/low respectively, see truth table.

4V1S2

Logic input to the Tx Switch arm 1, selects/deselects Low Noise Amplifier if Logic high/low respectively, see

truth table.

5GND

Ground.

6ANT

RF output to Antenna for the Tx/thru path and RF input from Antenna for the Rx/thru path, 50

 nominal imped-

ance.

7GND

Ground.

8V3S2

Logic input to the Tx Switch arm 3, selects/deselects PA if Logic high/low respectively, see truth table.

9NC

Not connected.

10

GND

Ground.

11

PA VCC2

Collector power supply for Power Amplifier. Nominal 3.6V.

12

GND

Ground.

13

NC

Not connected.

14

PA BIAS

Power supply for the PA Bias Network. Nominal 3.6V.

15

GND

Ground.

16

PA VREG

Voltage set to PA Bias Level. Nomial 2.85V.

17

PA VCC1

Collector power supply for PA driver stage. Nominal 3.6V.

18

NC

Not connected.

19

NC

Not connected.

20

PA IN

RF Input to the PA, 50

 nominal impedance, needs to be connected externally to PA IN to SWITCH PIN through

as short as possible 50

 transmission line.

21

PA IN to

SWITCH

PA input to be connected to the Rx Switch through this pin, 50

 nominal Impedance.

22

V2S1

Logic input to the Rx switch arm 2, selects/deselects Thru path if Logic high/low respectively, see truth table.

23

V1S1

Logic input to the Rx switch arm 1, selects/deselects PA if Logic high/low respectively, see truth table.

24

GND

Ground.

25

26

GND

Ground.

27

V3S1

Logic input to the Rx switch arm 3, selects/deselects LNA if Logic high/low respectively, see truth table.

28

NC

Not connected.

29

LNA VCC

Collector power cupply for LNA. Nominal 3.0V.

30

LNA VSEL

A logic low selects the high gain mode of the LNA, logic high selects the low gain mode.

31

LNA VREF

Voltage to set the bias of the LNA, nominal 3.0V, can be adjusted to shut the LNA off or set the quiescent current

of the LNA to desired level.

32

LNA IN

RF input to LNA, nominal impedance 50

, the Rx filter output should be connected to this pin, If Rx filter is

bypassed, pin 2 should be connected to this pin htough an external 50

 transmission line as short as possible.