Direct Conversion FSK Data Receiver

The SL6679 is an advanced Direct Conversion FSK Data Receiver for operation up to 450 MHz. The device integrates all functions to convert a binary FSK modulated RF signal into a demodulated data stream.

Adjacent channel rejection is provided using tuneable gyrator filters. RF and audio AGC functions assist operation when large interfering signals are present and an automatic frequency control (AFC) function is provided to extend centre frequency acceptance.

FEATURES

■ Very Low Power Operation from Single Cell

■ Superior Sensitivity

■ Operation at 512, 1200 and 2400 Baud

■ On Chip 1 Volt Regulator

■ 1mm Height Miniature Package

■ Automatic Frequency Control Function

■ Programmable Post Detection Filter

■ AGC Detection Circuitry

■ Power Down Function

■ Battery Strength Indicator

APPLICATIONS

■ Pagers, including Credit Card, PCMCIA and Watch Pagers

■ Low Data Rate Receivers, e.g. Security Systems