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RF2926

11

Typical Applications

鈥?Wireless Meter Reading

鈥?Keyless Entry Systems

鈥?433/868/915MHz ISM Band Systems

鈥?Wireless Data Transceiver

鈥?Wireless Security Systems

鈥?Battery Powered Portable Devices

UHF DUAL CONVERSION TRANSCEIVER

Product Description

The RF2926 is a monolithic integrated circuit intended for

use as a low cost FM transceiver. The device is provided

in 48-lead plastic TQFP packaging and is designed to

provide a dual conversion, half-duplex transceiver. The

chip is intended for linear (AM, FM) or digital (ASK, FSK,

OOK) applications in the North American 915MHz and

European 433/868MHz ISM bands. The integrated VCO

has a buffered output to feed the RF signal back to the

PLL IC to form the frequency synthesizer. Separate RX

ENABL, TX ENABL, and PLL ENABL lines allow for half

duplex operation as well as turning on the VCO to give

the synthesizer time to settle and complete power down-

mode.

.362

.346

.006

.002

.020

.362

.346

.280

.272

.011

.007

.057

.053

.280

.272

7擄MAX

0擄MIN

.031

.021

.007

MAX

Optimum Technology Matching廬 Applied

眉

Si BJT

Package Style: LQFP-48

GaAs HBT

SiGe HBT

UP CONV

LVL ADJ

PA INP

LO+

LO-

GaAs MESFET

Si CMOS

Si Bi-CMOS

Features

鈥?Monolithic Integrated Transceiver

鈥?2.7V to 5.0V Supply Voltage

35

VCO OUT

11

TRANSCEIVERS

46

Gain

Control

TX OUT

RX IN

2

4

44

37

36

39

鈥?Narrow Band and Wide Band FM/FSK

鈥?300MHz to 1000MHz Frequency Range

鈥?130MHz Bandwidth in First IF

鈥?5mW Output Power at 433MHz

34

31

LNA OUT

MIX CA

MIX IN

8

43

28

10

26

RSSI

MIX OUT+

MIX OUT-

12

13

15

IF1 IN

14

IF1 BP+

16

IF1 BP-

18

IF1 OUT

25

RSSI

20

VREF IF

21

IF2 IN

22

IF2 BP+

23

IF2 BP-

24

ATA OUT

27

30

MOD IN

RESNTR-

RESNTR+

DEMOD IN

FM OUT

DATA REF

Ordering Information

RF2926

RF2926 PCBA

UHF Dual Conversion Transceiver

Fully Assembled Evaluation Board

Functional Block Diagram

RF Micro Devices, Inc.

7625 Thorndike Road

Greensboro, NC 27409, USA

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Rev A5 010404

11-185

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