SAA7220 - NXP

SAA7220 DIGITAL FILTER FOR COMPACT DISC DIGITAL AUDIO SYSTEM

The SAA7220 is a stereo interpolating digital filter designed for the Compact Disc Digital Audio system. For descriptive purposes, the SAA7220 is referred to as the B-chip and the SAA7210 as the A-chip. Features • 16-bit serial data input (two's complement) • Interpolated data replaces erroneous data samples • -12 dB attenuation via the active LOW attenuatio.

Features

• 16-bit serial data input (two's complement)
• Interpolated data replaces erroneous data samples
• -12 dB attenuation via the active LOW attenuation input control (ATSB)
• Smoothed transitions before and after muting
• Two identical finite impulse response transversal filters each with a sampling rate of four times that of the normal digital audio data
• Digital audio output of 32-bit words transmitted in biphase-mark code
• 12 S data transfer between SAA7210, SAA7220 and 16-bit dual DAC (TOA 1541) QUICK REFERENCE DATA parameter conditions symbol min. typo max. unit Supply voltage (pin.