TH72011

433MHz

FSK Transmitter

Page 1 of 21

REVISION 012 - JUNE 14, 2017

3901072011

Features



Fully integrated PLL-stabilized VCO



Frequency range from 380 MHz to 450 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

independently adjustable



Adjustable output power range from

-12 dBm to +10 dBm



Adjustable current consumption from

3.4 mA to 10.6 mA



Conforms to EN 300 220 and similar

standards



8-pin Small Outline Integrated Circuit (SOIC)

Application Examples



General digital data transmission



Tire Pressure Monitoring System (TPMS)



Remote Keyless Entry (RKE)



Low-power telemetry



Alarm and security systems



Garage door openers



Home automation

Pin Description

Ordering information

Product Code

Temperature Code

Package Code

Option Code

Packing Form Code

TH72011

K

DC

BAA-000

RE

TH72011

K

DC

BAA-000

TU

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:

TH72011KDC-BAA-000-RE

General Description

The TH72011 FSK transmitter IC is designed for applications in the European 433 MHz industrial-scientific-medical

(ISM) band, according to the EN 300 220 telecommunications standard; but it can also be used in any other country

with similar frequency bands.

The transmitter's carrier frequency fc is determined by the frequency of the reference crystal fref. The integrated PLL

synthesizer ensures that each RF value, ranging from 380 MHz to 450 MHz, can be achieved by using a crystal with a

reference frequency according to: fref = fc/N, where N = 32 is the PLL feedback divider ratio.