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CXA1646Q

Sony Corporation
Part Number CXA1646Q
Manufacturer Sony Corporation
Description Electronic Volume
Published Mar 27, 2005
Detailed Description CXA1646Q/CXA1767Q Electronic Volume Description The CXA1646Q/CXA1767Q is a serial control electronic volume IC for car s...
Datasheet PDF File CXA1646Q PDF File

CXA1646Q
CXA1646Q

Overview
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 23 CE IN13 39 22 TEST INPUT SW VCTBUFF VCTBUFF 21 CLK IN12 40 IN11 41 LATCH NC 42 ZCDET NC 43 SHIFT REGISTER IN21 44 LATCH CONTROL 20 GND 19 NC 18 NC 17 VCC INPUT SW IN22 45 VCTBUFF VCTBUFF 16 VCT IN23 46 15 DATA IN24 47 LOUD GAIN2 48 VOLUME 8dB STEP VOLUME 1dB STEP TONE FADER 14 INIT 13 REO2 1 2 3 4 5 6 7 8 9 10 11 12 TCHC2 TCLC22 FNTO2 LDLC2 INAO2 FDIN2 NC LDHC2 VRIN2 TCLC21 –2– TCO2 NC CXA1646Q/CXA1767Q CXA1767Q TCLC11 TCHC1 TCLC12 LDHC1 ...


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