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Sony Semiconductor Electronic Components Datasheet

CXA1646Q Datasheet

Electronic Volume

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CXA1646Q/CXA1767Q
Electronic Volume
Description
The CXA1646Q/CXA1767Q is a serial control
electronic volume IC for car stereos.
CXA1646Q
48 pin QFP (Plastic)
CXA1767Q
40 pin QFP (Plastic)
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
V
°C
°C
mW (Ta = 85°C, 1646Q)
mW (Ta = 85°C, 1767Q)
Recommended Operating Condition
Supply voltage
VCC
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


Sony Semiconductor Electronic Components Datasheet

CXA1646Q Datasheet

Electronic Volume

No Preview Available !

Block Diagram and Pin Configuration
CXA1646Q
CXA1646Q/CXA1767Q
36 35 34 33 32 31 30 29 28 27 26 25
GAIN1 37
IN14 38
IN13 39
IN12 40
IN11 41
NC 42
NC 43
IN21 44
IN22 45
IN23 46
IN24 47
GAIN2 48
LOUD
8dB STEP 1dB STEP
VOLUME VOLUME
TONE
FADER
ZCDET
VCTBUFF
VCTBUFF
LATCH
LATCH CONTROL
SHIFT REGISTER
LOUD
VCTBUFF
VCTBUFF
VOLUME
8dB STEP
VOLUME
1dB STEP
TONE
FADER
24 REO1
23 CE
22 TEST
21 CLK
20 GND
19 NC
18 NC
17 VCC
16 VCT
15 DATA
14 INIT
13 REO2
1 2 3 4 5 6 7 8 9 10 11 12
–2–


Part Number CXA1646Q
Description Electronic Volume
Maker Sony Corporation
Total Page 21 Pages
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