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Sony Semiconductor Electronic Components Datasheet

CXA1946AQ Datasheet

Electronic Volume

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CXA1946AQ/AR
Electronic Volume
For the availability of this product, please contact the sales office.
Description
The CXA1946AQ/AR is a serial control electronic
volume IC designed for use in audio systems.
48 pin QFP (Plastic) 48 pin LQFP (Plastic)
Features
Loudness
Volume control (0dB to –87dB in 1dB step, –dB)
Balance
Tone control (15 steps, 2 bands, –16dB to +16dB)
Fader
(2dB-step to –20dB, –25dB, –35dB, –45dB, –60dB, –dB)
Input selector (4 channels)
Gain can be set for each input channel (common for channels 3 and 4)
Serial data control (DATA, CLK, CE)
Single 8V power supply
Zero-cross detection circuit (with timer)
Power-off mute
Volume control and tone control input/output pins are separate.
Absolute Maximum Ratings
Supply voltage
Operating temperature
Storage temperature
Allowable power dissipation
VCC
Topr
Tstg
PD
QFP
LQFP
13
–40 to +85
–65 to +150
350
180
V
°C
°C
mW (Ta = 85°C)
mW (Ta = 85°C)
Operating Conditions
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–
E95602D7Y


Sony Semiconductor Electronic Components Datasheet

CXA1946AQ Datasheet

Electronic Volume

No Preview Available !

Block Diagram and Pin Configuration
CXA1946AQ/AR
36 35 34 33 32 31 30 29 28 27 26 25
GAIN12 37
GAIN11 38
IN14 39
IN13 40
IN12 41
IN11 42
IN21 43
IN22 44
IN23 45
IN24 46
GAIN21 47
GAIN22 48
LOUD
8dB STEP
VOLUME
1dB STEP
VOLUME
TONE
VCTBUFF
VCTBUFF
VCTBUFF
ZCDET
LATCH
SHIFT REGISTER
LATCH CONTROL
LOUD
VOLUME
8dB STEP
VCTBUFF
VCTBUFF
VCTBUFF
VOLUME
1dB STEP
TONE
FADER
24 FNTO1
23 REO1
22 CE
21 CLK
20 DGND
100k
100k
19 GND
18 VCC
17 VCT
16 DATA
15 TIMER
FADER
14 REO2
13 FNTO2
1 2 3 4 5 6 7 8 9 10 11 12
–2–


Part Number CXA1946AQ
Description Electronic Volume
Maker Sony Corporation
Total Page 24 Pages
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