This is a simple 56W High Audio Amplifier Use LM3875 Circuit Diagram.
The LM3875 is an audio amplifier for high power output capable of
delivering 56W of continuous average power to a load 8. The performance
of the LM3875, utilizing its maximum instantaneous auto temperature (°
Ke) (Spike ™) protection circuitry, places it in a class above discrete
and hybrid amplifiers by providing a yes, dynamically protected area of
safe operation (SOA). SPIKE protection means that these parts are fully
protected against output overvoltage, voltage surges caused by shorts to
the supplies, the peak temperature thermal runaway, and instantaneous.
56W High Audio Amplifier Use LM3875 Circuit Diagram
This amplifier circuit is based on the non-inverted GainClone standard
configuration. I did some calucaltions the feedback resistor and other
components in order to check the gain, etc. For more background on the
calculations relevant to GainClones in the background section.
Parameters IC LM3875
Output Current 6000 mA.
Offset Voltage max, 25C 10 mV.
Gain Bandwidth 8 MHz.
Supply Min 20 Volt.
Supply Max 84 Volt.
Supply Current Per Channel 30 mA.
PowerWise Rating 2 3750 uA/MHz.
Slew Rate 11 Volts/usec.
Input OutputType Not Rail to Rail.
Max Input Bias Current 1000 nA.
Special Features AvCl>10.
Function Op Amp.
Channels 1 Channels.
Temperature Min 0 deg C.
Temperature Max 70 deg C
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