DB4487 Rev 1

5/16

FDA803Q

Description

15

1

Description

The FDA803Q is a single bridge class D amplifier, designed in the most advanced BCD

technology, intended for any automotive audio application (car radio, telematics and e-call,

noise and tone generators, etc).

The FDA803Q integrates a high performance D/A converter together with powerful

MOSFET outputs in class D, so it is very compact and powerful, moreover it reaches

outstanding efficiency performances (90%).

It has a very wide operating range: it can be operated both with standard car battery levels

(5.5-18 V operating, compatible to load dump pulse) and with external step-down generated

voltages or emergency battery (since it is compatible to minimum 3.3 V operative).

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

response linearity and lower distortion.

array specially intended for automotive applications including innovative open load and DC

offset detection in play mode.

Thanks to the solutions implemented to solve the EMI problems, the device is intended to

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

Moreover, FDA803Q features a configurable amplitude limiter function, and can be