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Chapter 3. Electrical Characteristics
Following table lists all typical data of the Amp board. For full specification, please refer to
the data sheet of ST's TDA7498 chip.
TABLE 3-1 ELECTRICAL CHARACTERISTICS
Parameter
Supply Voltage
Input Sensitivity
Gain(SW1/SW3 Setting)
Gain matching
Frequency Range
Efficiency
Input Impedance
Power transistor on
resistance
Overvoltage protection
threshold
Undervoltage protection
threshold
Overcurrent protection
threshold
Load
Operating Temperature
Storage Temperature
Thermal Shutdown
Note:
AA-AB33184_Ver1.0_Page 10
4 X 100WATT CLASS D AUDIO
1. Stresses beyond the listed maximum power supply voltage may cause the
permanent damage to components on board.
2.
The input sensitivity values are calculated on the basis of 6 Ohm load.
AMPLIFIER BOARD - TDA7498
Condition
-
25.6dB
31.6dB
35.1dB
37.6 dB
K1 ON, K2 ON
K1 OFF, K2 ON
K1 ON, K2 OFF
K1 OFF, K2 OFF
-
-
P=100W+100W
-
48K ohm
High side
Low side
-
-
R=0 ohm
-
-
-
-
USER'S GUIDE
Min.
Typ.
14V
36V
1286mV
723mV
-
430mV
323mV
24.6
25.6
30.6
31.6
34.1
35.1
36.6
37.6
-1
-
20Hz to 20KHz（±3dB）
-
90%
60K ohm
-
0.2 ohm
-
0.2 ohm
42V
43v
-
-
5.5A
7A
-
6 ohm
0℃
20℃
-20℃
20℃
-
150℃
© 2004-2011 Sure Electronics Inc.
Max.
39V
-
26.6
32.6
36.1
38.6
1
-
-
-
-
-
8V
-
-
50℃
105℃
-
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