Sure Electronics TDA7498 - Chapter 3. Electrical Characteristics

4 X 100WATT CLASS D AUDIO
AMPLIFIER BOARD - TDA7498
USER’S GUIDE
© 2004-2011 Sure Electronics Inc.
A
A-AB33184_Ver1.0_Page 10
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 Condition Min. Typ. Max.
Supply Voltage - 14V 36V 39V
25.6dB 1286mV
31.6dB 723mV
35.1dB 430mV
Input Sensitivity
37.6 dB
-
323mV
-
K1 ON, K2 ON 24.6 25.6 26.6
K1 OFF, K2 ON 30.6 31.6 32.6
K1 ON, K2 OFF 34.1 35.1 36.1
Gain(SW1/SW3 Setting)
K1 OFF, K2 OFF 36.6 37.6 38.6
Gain matching - -1 - 1
Frequency Range -
20Hz to 20KHz（±3dB）
Efficiency P=100W+100W - 90% -
Input Impedance - 48K ohm 60K ohm -
High side - 0.2 ohm -
Power transistor on
resistance
Low side - 0.2 ohm -
Overvoltage protection
threshold
- 42V 43v -
Undervoltage protection
threshold
- - - 8V
Overcurrent protection
threshold
R=0 ohm 5.5A 7A -
Load - - 6 ohm -
Operating Temperature - 0℃ 20℃ 50℃
Storage Temperature - -20℃ 20℃ 105℃
Thermal Shutdown - - 150℃ -
Note:
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.
Chapter 3. Electrical Characteristics