CXA1646Q

CXA1646Q/CXA1767Q Electronic Volume Description The CXA1646Q/CXA1767Q is a serial control electronic volume IC for car stereos. Features Loudness Volume control (1dB-step from 0dB to –87dB, –∞dB) Balance Tone control (2dB-step 2 band from –14dB to +14dB) Fader (2dB-step to –20dB, –25dB, –35dB, –45dB, –60dB, –∞dB) Input selector (4 channels) Serial data control (DATA, CLK, CE) Single 8V power supply Zero-cross detection circuit Structure Bipolar IC Absolute Maximum Ratings (Ta = 25°C) Supply voltage VCC 13 Operating temperature Topr –40 to +85 Storage temperature Tstg –65 to +150 Allowable power dissipation PD 350 240 Recommended Operating Condition Supply voltage VCC CXA1646Q 48 pin QFP (Plastic) CXA1767Q 40 pin QFP (Plastic) V °C °C mW (Ta = 85°C, 1646Q) mW (Ta = 85°C, 1767Q) 6 to 12 V 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. –1– E92759D7Y CXA1646Q/CXA1767Q Block Diagram and Pin Configuration CXA1646Q TCLC11 TCLC12 LDHC1 TCHC1 LDLC1 INAO1 FDIN1 FNTO1 VRIN1 TCO1 NC 36 35 34 33 32 31 30 29 28 27 26 25 GAIN1 37 LOUD IN14 38 8dB STEP VOLUME 1dB STEP VOLUME FADER NC 24 REO1 TONE ...