特性 Features

? AEC-Q100 qualified

? Integrated 110 dB D/A conversion

? I2S and TDM digital input (3.3/1.8 V)

? Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz and 192 kHz

? Full I2C bus driving (3.3/1.8 V) with 8 different I2C bus addresses

? Operating supply range: 5.5 V - 25 V

? EMI compliance evaluated following normative:

– CISPR25 Class V

– ISO 11452 2

? Low radiation function (LRF)

? Very low quiescent current

? Output lowpass filter is included in the feedback for outstanding audio

performance

? Operation under standard car battery with high output power:

– 2 x 22 W /4 Ω @ 14 V, 1 kHz THD = 1

– 2 x 28 W /4 Ω @ 14 V, 1 kHz THD = 10

– 2 x 37 W /2 Ω @ 14 V, 1 kHz THD = 1

– 2 x 46 W /2 Ω @ 14 V, 1 kHz THD = 10

? Possibility to drive 2 Ω loads (up to 18 V)

? Parallel mode for 1 Ω loads (up to 18 V)

? I2C bus diagnostics:

– Short to VCC/GND diagnostic

– DC load diagnostic

– AC load diagnostic (working both with internally and externally generated

tone)

? Integrated fault protection

? Input and output offset detector

? Clipping detector

? Short circuit and ESD integrated protections

描述 Description

The FDA802S is a dual bridge class D amplifier, designed in the most advanced BCD

technology specially intended for car radio applications.The FDA802S integrates a

high performance D/A converter together with powerful MOSFET outputs in class D,

to get an outstanding efficiency compared with the standard class AB.

The integrated D/A converter allows to reach outstanding performances (110 dB S/N

ratio with 108 dB of dynamic range). Thanks to the high-voltage MOSFET output

stages it can operate both under standard car battery (6-18 V) and under boosted

power supply (up to 25 V) to reach the highest possible power with integrated

solution. The feedback loop includes the output L-C low-pass filter, allowing superior

frequency response linearity and lower distortion independently from the inductor and

capacitor quality.