TDA7448 STMicroelectronics, TDA7448 Datasheet - Page 4

• Manufacturer Part Number: TDA7448
• Description: IC, VOLUME CNTRL, 6CH, 20SO
• Manufacturer: STMicroelectronics

Specifications of TDA7448

• Audio Control Type: Volume
• Control Interface: I2C
• Operating Temperature Range: 0°C To +70°C
• Audio Ic Case Style: SO
• No. Of Pins: 20
• Svhc: No SVHC (15-Dec-2010)
• Base Number: 7448
• Control / Process: RoHS Compliant
• Supply Voltage Range: 4.75V To 10V
• Rohs Compliant: Yes

TDA7448
Figure 4. Test circuit
3
The volume control range is 0 to -79dB, by 1dB step
resolution.
The very high resolution allows the implementation of
systems free from any noise acoustical effect.
3.1 CREF
The suggested 10 F reference capacitor (CREF)
value can be reduced to 4.7 F if the application re-
quires faster power ON.
Figure 5. THD vs. frequency
4/14
APPLICATION SUGGESTIONS
IN1
IN2
IN3
IN4
IN5
IN6
0.47 F
0.47 F
0.47 F
0.47 F
0.47 F
0.47 F
10 F
CREF
GND
IN1
IN2
IN3
IN4
IN5
IN6
2
19
3
18
4
17
11
20
50K
50K
50K
50K
50K
50K
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
SUPPLY
Figure 6. THD vs. R
Figure 7. Channel separation vs. frequency
V
S
1
DECODER
I
2
C BUS
D02AU1406
14
15
16
10
11
7
6
5
9
LOAD
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
SCL
SDA
ADDR