CLASS D AUDIO AMPLIFIER
BOARD - TDA7492
USER’S GUIDE
©
2004-2011 Sure Electronics Inc.
AA-AB32189 & AA-AB32174 & AA-AB34165_Ver1.0_Page 9
Following table lists all typical data of the Amp board. For full specification, please refer to
the data sheet of ST’s TDA7492 chip.
TABLE 3-1 ELECTRICAL CHARACTERISTICS
Parameter Condition
Min.
Typ.
Max.
AA-AB32189 36V
40V
AA-AB32174 24V
27V
Supply Voltage
AA-AB32165
14V
16V 19V
FAN ON,STBY
Disable
- 90mA
-
FAN ON,STBY
Enable
- 50mA
-
FAN OFF,STBY
Disable
- 40
mA
Quiescent Current
（
Powered by 19V
）
FAN OFF,STBY
Enable
10
mA
25.6dB 1280mV
31.6dB 640mV
35.1dB 430mV
Input Sensitivity
（
AA-AB32189
）
37.6dB
-
323mV
-
25.6dB 910mV
31.6dB 450mV
35.1dB 300mV
Input Sensitivity
（
AA-AB32174
）
37.6dB
-
220mV
-
25.6dB 640mV
31.6dB 320mV
35.1dB 210mV
Input Sensitivity
（
AA-AB32165
）
37.6dB
-
160mV
-
K1 ON, K2 ON
24.6
25.6
26.6
K1 ON, K2 OFF
30.6
31.6
32.6
K1 OFF, K2 ON
34.1
35.1
36.1
Gain(SW1 Setting)
K1 OFF, K2 OFF
36.6
37.6
38.6
Frequency Range
-
20Hz to 20KHz
（
±3dB
）
Efficiency
Both channels
output rating
power.
-
>90% -
Input Impedance
-
48K ohm
60K ohm
-
Load - -
6
ohm
-
Operating Temperature
-
0
℃
20
℃
50
℃
Chapter 3. Electrical Characteristics
