Direct Conversion FSK Data Receiver
SL6679
Direct Conversion FSK Data Receiver
Preliminary Information
Supersedes September 1996 version, DS4410 - 1.5 DS441...
Description
SL6679
Direct Conversion FSK Data Receiver
Preliminary Information
Supersedes September 1996 version, DS4410 - 1.5 DS4410 - 2.1 April 1998
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.
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FEATURES s Very Low Power Operation from Single Cell s Superior Sensitivity s Operation at 512, 1200 and 2400 Baud s On Chip 1 Volt Regulator s 1mm Height Miniature Package s Automatic Frequency Control Function s Programmable Post Detection Filter s AGC Detection Circuitry s Power Down Function s Battery Strength Indicator APPLICATIONS s Pagers, including Credit Card, PCMCIA and Watch Pagers s Low Data Rate Receivers, e.g. Security Systems ORDERING INFORMATION
SL6679/KG/TP1N SL6679/KG/TP1Q 1mm TQFP device, baked and dry packed, supplied in trays 1mm TQFP device, baked and dry packed, supplied in tape and reel
IRF GND MIXIP A MIX DEC MIXIP B REG CNT VREG TPI
GTH ADJ TC ADJ IAGC OP TP LIM I VBATT BRF1 BRF CNT AFC2
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SL6679
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AFC1 BATT FLAG VCC2 DATA OP BEC AFC OP VREF TPQ
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I1 I2 VCC1 LOIP I GYR I...
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