2 X 300Watt Class-D Audio Amplifier Board- TAS5630
©
2004-2011 Sure Electronics Inc.
AA-AB32191_Ver1.0_Page 7
FIGURE 2-4 LED INDICATORS
2.5 Gain Setting
You may also adjust the gain by setting the DIP switch SW1, SW2, SW3 and SW4. The
gain is factory pre-set to weak. This can prevent chip from permanent damage caused
by overheat when input signal amplitude is over range. On the other conditions of gain
setting, it is recommended that the output signal amplitude is no larger than the power
supply voltage once the input signal reaches the peak.
For example, the maximum amplitude of the input signal is no more than 480mV RMS
when power supply voltage is 50V, load impedance is 4 ohm and the gain is set at 35 dB.
The other circumstances can be referred to the input sensitivity from
TABLE 3-1
ELECTRICAL CHARACTERISTICS
. Never adjust the gains when the amplifier is
working, or TAS5630 will be damaged because of the instantaneous voltage. The
instantaneous energy will exceed the rated power of a speaker and damage it. When
adjust gain, please set SW1, SW2, SW3 and SW4 in the same way to make sure the
same gains.
