SC6579 Datasheet, PDF (1/9 Pages) Silan Microelectronics Joint-stock – RADIO DATA SYSTEM (RDS) DEMODULATOR

Silan
Semiconductors
SC6579
RADIO DATA SYSTEM (RDS)
DEMODULATOR
DESCRIPTION
The integrated CMOS circuit SC6579 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
(microcomputer).
DIP-16
FEATURES
SOP-16
• Anti-aliasing filter (2nd order)
• Integrated 57 kHz band-pass filter (8th order)
• Reconstruction filter (2nd order)
• Clocked comparator with automatic offset compensation
• 57 kHz carrier regeneration
• Synchronous demodulator for 57 kHz modulated RDS signals
• Selectable 4.332/8.664 MHz crystal oscillator with variable
dividers
ORDERING INFORMATION
Device
Package
SC6579
DIP16-300-2.54
SC6579S
SOP-16-225-1.27
• Clock regeneration with lock on bi-phase data rate
• Bi-phase symbol decoder with integrate and dump functions
• Differential decoder
• Signal quality detector
• Subcarrier output.
PIN CONFIGURATION
QUAL 1
16 RDCL
RDDA 2
15 T57
Vref 3
14 OSCO
MUX 4
13 OSCI
SC6579
VDDA 5
12 VDDD
VSSA 6
11 _VSSD
CIN 7
10 TEST
SCOUT 8
9 MODE
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2001.12.30
1