FDA801B-VYY

FDA801B 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. FDA801B 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 FDA801B is able to work with power supply as low as 6 V, thus supporting the most recent low voltage ('start-stop') car-makers specification.

Integrated 110 dB D/A conversion I 2S 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 O @ 15.2 V, 1 kHz High output power capability 28 W/4 O 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 and load value recognition (DIM) Integrated fault protection Input and output offset detector