CXA2021S

CXA2021S I2C BUS Sound Processor for TV Description The CXA2021S is a bipolar IC developed as an I2C BUS control sound processor for TV. This IC implements surround, tone control, balance, volume, mute and AGC functions. Features I2C BUS control The AGC circuit is adopted to absorb volume differences between input sources and improve the S/N ratio in hearing. Absolute Maximum Ratings Supply voltage VCC 14 V Operating temperature Topr –20 to +75 °C Storage temperature Tstg –65 to +150 °C Allowable power dissipation PD 0.9 W Recommended Operating Condition Supply voltage 8 to 13 22 pin SDIP (Plastic) Structure Bipolar silicon monolithic IC Applications TVs V Pin Configuration LOUT CH-L DET1 CL-L HPO SDA 12 11 VRS L-IN Vcc HPI PS 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 CL-R BAL VOL ROUT GND BASS CH-R TRE DET2 Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. R-IN –1– SCL E95319-ST CXA2021S Block Diagram I2C BUS SOUND PROCESSOR Surround Vcc L = L – (L – R) × 1 – SCR 1 + SCR 1 – SCR 1 + SCR R = 18K 150Hz HPF DET1 16 17 13 DET2 10 21 CH-L CL-L R = R + (L – R) × 19 20 AGC DET 1...