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

? Class-D channels with 93 efficiency

? CISPR25 - Class V (Fourth Edition)

? Low radiation function (LRF)

? Idle tones free DAC

? Output lowpass filter included in the feedback allowing superior audio

performance

? High output power capability

– 28 W/4 Ω 10 THD, Vd = 14.4 V

– Max. output power: 4 x 50 W/4 Ω @ 15.2 V, 1 kHz

? Full I2C bus driving (3.3/1.8 V):

– Channel independent Eco-Mode

– Channel independent soft play/mute

– I2C bus diagnostics, including DC and AC load detection and load value

recognition

? Integrated fault protection

? Input and output offset detector

? Clipping detector

? Real time load current monitoring (on I2C and TDM data lines)

? ESD protection

? 6 V operation (Start - Stop engines compatibility)

? 2 and 1 Ω load driving capability

描述 Description

FDA901 is a new BCD technology Quad Bridge class D amplifier, specially intended

for car radio automotive applications.

Thanks to the technology used, it is possible to integrate a high performance D/A

converter together with powerful MOSFET outputs in class D, to get an outstanding

efficiency compared to the standard class AB.

The integrated D/A converter allows to reach outstanding performances (115 dB S/N

ratio with 110 dB of dynamic range). The feedback loop includes the output L-C lowpass

filter, allowing superior frequency response linearity and lower distortion

independently from the inductor and capacitor quality.

FDA901 is fully configurable through I2C bus, moreover it includes not only the most

complete load diagnostic matrix but also a unique real time load current acquisition

on I2C and I2S data lines, enabling sophisticated speaker monitoring functions.

Thanks to the solutions implemented to contain EMI emissions, the device is

intended to be used in the standard single DIN car-radio box together with the tuner.

Moreover the FDA901 is able to work with power supply as low as 6 V, thus

supporting the most recent low voltage ('start-stop') car-makers specification.