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RF5725

DS120214

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

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

Package Drawing

Pin

Function

Description

1LNA VCC

Voltage supply for the LNA (labeled VCC3 on evaluation board).

2RX OUT

Receive port for 802.11b/g band. Internally matched to 50

. DC block provided.

3TX

RF input for the 802.11b/g PA. Input is matched to 50

 and DC block is provided.

4VREG

decoupling purposes.

5PDETECT

Power detector voltage for TX section. PDET voltage varies with output power. May need external decoupling

capacitor for module stability. May need external circuitry to bring output voltage to desired level.

6VCC

Supply voltage for the bias circuit of the PA.

7VCC

Supply voltage for the first stage of the PA. Add an external 0.1uF capacitor for low frequency decoupling.

8N/C

No connect.

9VCC

Supply voltage for the second stage of the PA. Add an external 0.1uF capacitor for low frequency decoupling.

10

GND

Ground.

11

ANT

Port matched to 50

 and is a DC short to ground.

12

C_BT

Switch control port. See truth table for proper level.

13

BT

 and DC block is provided.

14

C_TX

Switch control port. See switch truth table for proper level.

15

C_RX

Switch control port. See switch truth table for proper level.

16

LNA_EN

LNA enable pin. This is an active high control. A bypass capacitor may be needed for supply noise decoupling.