FDA901 | 产品 - 意法半导体

概述

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产品概要

描述

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 low-pass 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.

All 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, V_d = 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
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Available documentation resources
	Resource title	版本	Latest update	Actions	Details	下載

产品规格 (1)

	Resource title	版本	Latest update	Actions	Update date	Options
PDF	Check to add DB3856 to the download list DB3856 4 x 50 W class-D digital input automotive power amplifier with load current monitoring and low voltage operation	1.0	04 Mar 2019	PDF	04 Mar 2019 DB3856 4 x 50 W class-D digital input automotive power amplifier with load current monitoring and low voltage operation 1.0

宣传册 (1)

	Resource title	版本	Latest update	Actions	Update date	Options
PDF	Check to add to the download list HFDA & FDA series – Full digital audio amplifiers for car infotainment systems	2.0	26 May 2025	PDF	26 May 2025 HFDA & FDA series – Full digital audio amplifiers for car infotainment systems 2.0

选型指南 (1)

	Resource title	版本	Latest update	Actions	Update date	Options
PDF	Check to add to the download list Automotive Audio Power Amplifiers	2.0	08 Apr 2025	PDF	08 Apr 2025 Automotive Audio Power Amplifiers 2.0

手册 (1)

	Resource title	版本	Latest update	Actions	Update date	Options
PDF	Check to add to the download list Compact, feature-rich, high-frequency (2 MHz), class-D audio ampliers for automotive applications	1.0	08 Apr 2025	PDF	08 Apr 2025 Compact, feature-rich, high-frequency (2 MHz), class-D audio ampliers for automotive applications 1.0