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RF7401

DS100630

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

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

Operating Mode Truth Table

Package Drawing

Pin

Function

Description

1

VBAT

Supply voltage for bias circuitry.

2

RF IN

RF input internally matched to 50

 and DC blocked. The RF input matching circuit has a shunt inductor to

ground which would short any DC voltage placed on this pin.

3NC

No connection.

4

VMODE

Digital control input for power mode selection (see Operating Modes truth table).

5

VEN

Digital control input for PA enable and disable (see Operating Modes truth table).

6

CPL_OUT

Coupler output.

7

GND

This pin must be grounded.

8

CPL_IN

Coupler input used for cascading couplers in series. Terminate this pin with a 50

 resistor if not connected to

another coupler.

9

RF OUT

RF output internally matched to 50

and DC blocked.

10

VCC

Supply voltage for the first and second stage amplifiers, which can be connected to battery supply or output of

DC-DC converter.

Pkg

Base

GND

Ground connection. The package backside should be soldered to a topside ground pad connecting to the PCB

ground plane with multiple ground vias. The pad should have a low thermal resistance and low electrical imped-

ance to the ground plane.

Conditions/Comments

Low

Low

3.0V to 4.2V

3.0V to 4.2V

Power down mode

Low

X

3.0V to 4.2V

3.0V to 4.2V

Standby Mode

High

Low

3.0V to 4.2V

3.0V to 4.2V

High power mode

High

High

3.0V to 4.2V

3.0V to 4.2V

Low power mode