Features

● 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, 192 kHz

● Class-D channels with 93% efficiency

● EMI control for AM compatibility

● EMI compliance evaluated following normative IEC61967-4 and IEC62132-4

● Low radiation function (LRF) 

● Idle tones free DAC

● Output lowpass filter included in the feedback allowing lower cost filter components

● Max. output power

  – 4 x 50 W/4 Ω @ 15.2 V, 1 kHz

● High output power capability

  – 28 W/4 Ω 10 % THD, Vd = 14.4 V

● Full I2C bus driving (3.3/1.8 V):

  – Channels independent tristate

  – Channel independent soft play/mute

  – I2C bus diagnostics, including DC and AC load detection

● Integrated fault protection

● Input and output offset detector

● Clipping detector

● ESD protection

● 6 V operation (“Start - Stop” engines compatibility)

● 2 and 1 Ω load driving capability

Description

FDA801 is a new BCD technology quad BRIDGE class D amplifier, specially intended for 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 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). 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.

FDA801 is fully configurable through I2C bus interface and integrates a full diagnostics array specially intended for automotive applications. 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 FDA801 is able to work with power supply as low as 6 V, thus supporting the most recent low voltage ('start-stop') car-makers specification.