STPAC01F1 datasheet(1/6 Pages) STMICROELECTRONICS

Part #	STPAC01F1

Description	RF DETECTOR FOR POWER AMPLIFIER CONTROL

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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STPAC01F1

®

January 2003 - Ed: 1

Flip-Chip package

Gnd1

RFin

Gnd1

Gnd2

Bias

DC

out

V

Temp

32

1

A

B

C

PIN CONFIGURATION (ball side)

s

The use of IPAD technology allows the RF

front-end designer to save PCB area and to

drastically suppress parasitic inductances.

BENEFITS

RF DETECTOR FOR

POWER AMPLIFIER CONTROL

IPADTM

The STPAC01F1 has two outputs, one for the

signal

detection

and

another

one

for

the

temperature compensation:

s

V

DCout = 0.88 V at 0.85 GHz at 10 dBm

s

V

DCout = 1.07 V at 1.85 GHz at 10 dBm

s

Vsupply=5V max.

MAIN PRODUCT CHARACTERISTICS

The STPAC01 is an integrated RF detector for the

power control stage. It converts RF signal coming

from the coupler into a DC signal usable by the

digital stage. It is based on the use of two similar

diodes, one providing the signal detection while

the second one is used to provide a temperature

information to thermal compensation stage. A

biasing stage suppresses the detection diode drop

voltage effect.

Target applications are cellular phones and PDA

using GSM, DCS, PCS, AMPS, TDMA , CDMA

and 800MHz to 1900MHz frequency ranges

DESCRIPTION

TM : IPAD is a trademark of STMicroelectronics.

Coupler

GND2

GND1

VDCOut

STPAC01F1

RF input

VBIAS

Vtemp

Thermal

compensation

Low pass

filter

RF detector

FUNCTIONAL DIAGRAM

Similar Part No. - STPAC01F1

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STPAC01F1 Datasheet(PDF) 1 Page - STMicroelectronics

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