SAA6579 Datasheet | NXP Semiconductors

INTEGRATED CIRCUITS DATA SHEET SAA6579 Radio Data System (RDS) demodulator Product specification Supersedes data of January 1994 File under Integrated Circuits, IC01 1997 Feb 24 Philips Semiconductors Product specification Radio Data System (RDS) demodulator Features - Anti-aliasing filter (2nd order) - Integrated 57 k Hz band-pass filter (8th order) - Reconstruction filter (2nd order) - Clocked parator with automatic offset pensation - 57 k Hz carrier regeneration - Synchronous demodulator for 57 k Hz modulated RDS signals - Selectable 4.332/8.664 MHz crystal oscillator with variable dividers - Clock regeneration with lock on biphase data rate - Biphase symbol decoder with integrate and dump functions - Differential decoder - Signal quality detector - Subcarrier output. QUICK REFERENCE DATA SYMBOL VDDA VDDD Itot Vi(rms) VOH VOL Tamb PARAMETER analog supply voltage (pin 5) digital supply voltage (pin 12) total supply current RDS input amplitude (RMS value; pin 4) HIGH level output voltage for signals RDDA, RDCL, QUAL and T57 LOW level output voltage for signals RDDA, RDCL, QUAL and T57 operating ambient temperature MIN. 3.6 3.6 - 1 4.4 - - 40 TYP. 5.0 5.0 6 - - - - GENERAL DESCRIPTION The integrated CMOS circuit SAA6579 is an RDS demodulator. It recovers the additional inaudible RDS information which is transmitted by FM radio broadcasting. The data signal RDDA and the clock signal RDCL are provided as outputs for further processing by a suitable decoder (microputer). The operational functions of the device are in accordance with the “CENELEC EN 50067”. MAX. 5.5 5.5 - - - 0.4 +85 UNIT V V m A m V V V °C ORDERING INFORMATION TYPE NUMBER SAA6579 SAA6579T PACKAGE NAME DIP16 SO16 DESCRIPTION plastic dual in-line package; 16 leads (300 mil); long body plastic small outline package; 16 leads; body width 7.5 mm VERSION SOT38-1...