TH72031

868/915MHz

FSK Transmitter

3901072031

Page 1 of 20

Data Sheet

Rev. 012

Jun/12

Features

Fully integrated PLL-stabilized VCO

Frequency range from 850 MHz to 930 MHz

Single-ended RF output

FSK through crystal pulling allows modulation

from DC to 40 kbit/s

High FSK deviation possible for wideband data

transmission

Wide power supply range from 1.95 V to 5.5 V

Very low standby current

On-chip low voltage detector

High over-all frequency accuracy

FSK deviation and center frequency independ-

ently adjustable

Adjustable output power range from

-12 dBm to +9.5 dBm

Adjustable current consumption from

5.1 mA to 13.4 mA

Conforms to EN 300 220 and similar standards

8-pin Small Outline Integrated Circuit (SOIC)

Ordering Code

Product Code

Temperature Code

Package Code

Option Code

Packing Form Code

TH72031

K

DC

BAA-000

TU

TH72031

K

DC

BAA-000

RE

Legend:

Temperature Code:

K for Temperature Range -40°C to 125°C

Package Code:

DC for SOIC

Packing Form:

RE for Reel, TU for Tube

Ordering example:

TH72031KDC-BAA-000-TU

Application Examples

Pin Description

General digital data transmission

Tire Pressure Monitoring Systems (TPMS)

Remote Keyless Entry (RKE)

Wireless access control

Alarm and security systems

Garage door openers

Remote Controls

Home and building automation

Low-power telemetry systems

General Description

The TH72031 FSK transmitter IC is designed for applications in the European 868 MHz industrial-scientific-

medical (ISM) band, according to the EN 300 220 telecommunications standard. It can also be used for any

other system with carrier frequencies ranging from 850 MHz to 930 MHz (e.g. for applications in the US 902

to 928 MHz ISM band).

grated PLL synthesizer ensures that each RF value, ranging from 850 MHz to 930 MHz, can be achieved.

feedback divider ratio.

FSKDTA

VEE

ENTX

ROI

FSKSW

VCC

PSEL

OUT

TH72031

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3

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2

8

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