TH7108(2001) Ver la hoja de datos (PDF) - Melexis Microelectronic Systems

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TH7108
(Rev.:2001)

868/915MHz FSK/FM/ASK Transmitter

Melexis Microelectronic Systems  

TH7108

868/915MHz

FSK/FM/ASK Transmitter

Features

! Fully integrated, PLL-stabilized VCO

! Flexible frequency range from 800 MHz to 930 MHz

! FSK through crystal pulling allows modulation from

DC to 20 kbit/s

! High FSK deviation possible for wideband data

transmission

! ASK achieved by on/off keying of internal

power amplifier

! FM possible with external varactor

! Wide power supply range from 2.2 V to 5.5 V

! High over-all frequency accuracy

! Very low standby current

! Adjustable output power range from

-15 dBm to +1 dBm

! Adjustable current consumption from

6.2 mA to 12.5 mA

! FSK deviation and center frequency

independently adjustable

! Differential output well-suited for loop

antenna

! External clock available for µC drive,

down to 1.9 V supply

! ”Clock only” mode

! Conforms to EN 300 220 and similar

standard

Ordering Information

Part No.

TH7108

Temperature Range

-40 C° to 85 °C

Package

SOIC16

Application Examples

! Keyless car and central locking

! Low-power telemetry

! Alarm and security systems

! General digital data transmission

! General analog audio signal transmission

Pin Description

LF1 1

SUB 2

DATA 3

RO2 4

RO1 5

ENTX 6

ENCK 7

CKOUT 8

TH7108

16 LF2

15 VCC

14 VEE

13 OUT1

12 OUT2

11 VEE

10 VCC

9 PS

3901007108

Rev. 005

Page 1 of 12

Data Sheet

Dec. 2001

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