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TDA7850 car power amplifier

2014-11-24 22:30  
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TDA7850 it’s a very simple class AB car power amplifier circuit designed in MOSFET technology which use just few external components .
This TDA7850 car power amplifier circuit can be used in car radio audio systems and it have many features like :
High output power capability:
– 4 x 50 W/4 Ω max.
– 4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
– 4 x 80 W/2 Ω max.
– 4 x 55 W/2 Ω @ 14.4V, 1 kHz, 10 %
MOSFET output power stage , Hi-Fi class distortion , Low output noise , ST-BY function , Mute function , automute at minim supply voltage detection , Output short circuit to gnd, to Vs protection , Overrating chip temperature with soft thermal limiter , Output DC offset detection .

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The TDA7850's inputs are ground-compatible and can stand very high input signals (±8Vpk) without any performance degradation.
Standby and Muting facilities are both CMOS compatible. In true CMOS ports or microprocessors are absent the ST-BY pin can be connected direct to Vs but it’s necessary to connect a 470kΩ resistance between these two pins (Vs and ST-BY) .
The power supply for this audio power amplifier must be 14.4 volts .
This audio power amplifier IC must be mounted on a corresponding heatsink for high temperature disipation .

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