SAA7220

The SAA7220 is a stereo interpolating digital filter designed for the compact Oisc Digital Audio system.For descriptive purposes,it is referred to as the B-chip and SAA7210 as the A-chip.

Features of the SAA7220 are:(1)16-bit serial data input;(2)interpolated data repiaces corroneous data samples;(3)-12 dB attenuation via the active LOW attenuation input control;(4)smoothed transitions before and after muting;(5)two identical finite impose response transversal filters each with a sampling rate of four times that of the normal digital audio data;(6)digital audio output of 32-bit words transversal in biphase mark code;(7)I2S data transfer between SAA7210 and 18-bit dual DAC.

The quick reference data of the SAA7220 can be summarized as:(1):the parameter is supply voltage range,the symbol is VDD,the rating is 5,the unit is V;(2):the parameter is supply current,the symbol is IDD,the rating is 180mA,the unit is mA;(3):the parameter is input voltage LOW,the symbol is VIL,the rating is -0.3 to +0.8,the unit is V;(4):the parameter is input voltage HIGH,the symbol is VIH,the rating is 2.0 to VDD+0.5,the unit is V;(5):the parameter is output voltage LOW,the symbol is VOL,the rating is 0 to 0.4,the unit is V;(6):the parameter is output voltage HIGH,the symbol is VOH,the rating is 2.4 to VDD,the unit is V;(7):the parameter is voltage across a 75 load via,the symbol is VL(p-p),the rating is 0.4 to 0.6,the unit is V;(8):the parameter is oscillator operatng frequency XTAL,the symbol is fXTAL,the rating is 11.2B96,the unit is MHz;(9):the parameter is operating temperature range,the symbol is Tamb,the rating is -20 to +70,the unit is .