TH72006 Datasheet, PDF(1/16 Page) Melexis Microelectronic Systems

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TH72006 Datasheet, PDF (1/16 Pages) Melexis Microelectronic Systems – 315MHz FSK/ASK Transmitter

TH72006

315MHz

FSK/ASK Transmitter

Features

! Fully integrated PLL-stabilized VCO

! Frequency range from 290 MHz to 350 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

! ASK achieved by on/off keying of internal

power amplifier up to 40 kbit/s

! Wide power supply range from 1.95 V to 5.5 V

! Very low standby current

! Microcontroller clock output

! 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

3.6 mA to 10.7 mA

! Conforms to FCC part 15 and similar standards

! 10-pin Quad Flat No-Lead Package (QFN)

Ordering Information

Part Number

Temperature Code

TH72006

K (-40 Â°C to 125 Â°C)

Package Code

LD (10L QFN 3x3 Dual)

Delivery Form

120 pc/tray

5000 pc/T&R

Application Examples

! 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

Pin Description

FSKDTA

FSKSW

ROI

CKOUT

top

TH72006

VCC

VEE

OUT

CKDIV

PSEL

bottom

General Description

The TH72006 FSK/ASK transmitter IC is designed for applications in the 315 MHz industrial-scientific-

medical (ISM) band. It can also be used for any other system with carrier frequencies ranging from

290 MHz to 350 MHz.

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

grated PLL synthesizer ensures that carrier frequencies, ranging from 290 MHz to 350 MHz, can be

achieved. This is done by using a crystal with a reference frequency according to: fref = fc/N, where N = 32 is

the PLL feedback divider ratio.

A clock signal with selectable frequency is provided. It can be used to drive a microcontroller.

39010 72006

Rev. 005

Page 1 of 16

Data Sheet

Dec/07

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