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PDF CXA2547Q Data sheet ( Hoja de datos )
| Número de pieza | CXA2547Q | |
| Descripción | 2-band Electronic Volume | |
| Fabricantes | Sony Corporation | |
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CXA2547Q
2-band Electronic Volume
For the availability of this product, please contact the sales office.
Description
The CXA2547Q is a 2-channel electronic volume
IC. A 34-bit serial data input controls the level and
characteristics of the output signal. It may be used
in car stereos and general audio systems.
48 pin QFP (Plastic)
Features
• Loudness
• Volume control
(from 0 dB to –80 dB, –∞ dB : Fine (1 dB-step)
Coarse (8 dB-step)
• Balance
• Tone control
(2-band, 2 dB-step from –15 dB to +15 dB)
• Fader
2 dB-step to –20 dB, –25 dB, –35 dB, –45 dB, –60
dB, –∞ dB)
• Input and gain selector (4 channels)
• Serial data control (DATA, CLK, CE)
• Single 8 V power supply
• Zero-cross detection circuit
(L/R independent operation for the volume block)
• Timer
• Power-off mute
• Countermeasure to the noise of the portable
telephone
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC 13 V
• Operating temperature Topr –40 to +85 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 350 mW
(Ta=85 °C)
Recommended Operating Conditions
Supply voltage
VCC 7 to 12
V
Structure
Bipolar silicon monolithic IC
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—
E97Y19B91-TE
1 page  
CXA2547Q
Pin I/O resistance
Symbol
No. Pin voltage
Equivalent circuit
VCC
Description
12 FDIN2
25 FDIN1
24 k
VCT
12
25
Fader input
GND
VCC
13 REO2
24 REO1
—
VCT
13
24
Rear output
GND
VCC
14 FNT02
23 FNT01
—
VCT
14
23
15 TIMER
~∞
15
—
Front output
GND
VCC
Timer constant setting
16 DATA
~∞
124 4k
16
—
GND
VCC
Serial data input
GND
—5—
5 Page 
Timing Chart
CXA2547Q
CE
DATA
CLK
CE
D1 D2
D34 D35 D36
Invalid
D1 D2
t1
t1 ≥ 0.5µs
t2 ≥ 0.5µs
tck ≥ 1.0µs
tsu ≥ 0.5µs
th ≥ 0.5µs
tce ≥ 4.0µs
tck
tsu th
t2 tL
tL ≥ tT+0.5µs
(tT is the maximum value for the timer operation time)
D1 for the next data transfer
to the CXA2547 is shifted
at this clock rise.
tce
Timer Waiting Period Setting Chart (VCC=7 to 12 V, operating temperature=–40 °C to 85 °C)
TIMER pin
capacitance C
C=100 pF
C=0.001 µF
C=0.01 µF
C=0.1 µF
C=1 µF
C=10 µF
Waiting period
Min. Typ. Max.
3 µs 5 µs 9 µs
30 µs
50 µs
90 µs
300 µs
500 µs
900 µs
3 ms
5 ms
9 ms
30 ms
50 ms
90 ms
300 ms 500 ms 900 ms
—11—
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet CXA2547Q.PDF ] | |
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