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NXP ( Philips Semiconductor ) release new audio power amplifier chip with a maximum output power delivered around 45 watts per 4 channels .
TDF8551J audio amplifier has a complementary quad audio power amplifier that uses BCDMOS
technology. TDF8551J audio amplifier chip contains four amplifiers configured in Bridge-Tied Load (BTL) to drive four speakers.
The I2C-bus of the TDF8551J audio amplifier enables diagnostic information for each amplifier .
The TDF8551J audio amplifier has six output voltage regulators and two power switches .
TDF8551J amplifier has many build in features like :I2C-bus control , can drive a 2 W load with a battery voltage of up to 16 V and a 4 W load with a battery voltage of up to 18 V , DC load detection: open, short and present , AC load (tweeter) detection , Programmable clip detect; 1 % or 3 % , programmable thermal protection pre-warning , independent short-circuit protection for each channel , selectable line driver (20 dB) and amplifier mode (26 dB) , loss-of-ground and open VP safe , short-circuit to ground to VP or across the load protection , low battery detection , I2C-bus control , six voltage regulators (microcontroller, display, audio processor, tuner, bus, mechanical digital and drive) , selectable output voltages for regulators 1, 4 and 5 , low dropout voltage PNP output stages , low noise for all regulators and many other .
TDF8551J audio amplifier require a power supply voltage around 14.4 volts and can be used with 2 ohms load or 4 ohms load for each channel .
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