FDA803S-6DT

Overview

The FDA803S-6DT is a single-channel Class-D digital input automotive power amplifier designed for telematics and e-Call applications. It integrates a 24-bit, 100 dB DAC conversion and PWM output stage with feedback before the LC filter. The device supports I2S and TDM digital bit streams up to 16 channels with sampling frequencies from 8 kHz to 96 kHz. It operates within a wide supply voltage range of 3.3 V to 18 V, supporting start-stop cranking down to 3.3 V. The amplifier delivers typical output power of 10 W into a 4 Ω load at 14.4 V with 1% THD, or 5 W into an 8 Ω load under the same conditions.

Feature Summary

• Integrates 24-bit, 100 dB D/A conversion and PWM class-D output stage with pre-filter feedback for compact design.
• Supports I2S and TDM digital inputs with selectable sample rates from 8 kHz to 96 kHz.
• Embeds complete diagnostic capabilities in play mode to ensure system robustness and reliability.
• Features wide operating voltage range supporting 3.3 V to 18 V for automotive start-stop environments.

Applications

• Automotive emergency call (e-Call) systems
• Vehicle telematics units
• Car audio amplification

Procurement Notes

Verify the specific suffix '6DT' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with AEC-Q100 qualification requirements for automotive deployment. Cross-reference the datasheet for exact pinout and thermal characteristics relative to the QFN 5x5 package configuration.

Selection Notes

Select this component for applications requiring direct digital audio input without external DACs. The integrated diagnostics and wide voltage range make it suitable for harsh automotive environments. Consider the QFN 5x5 package size for space-constrained designs. Verify that the required output power aligns with the 10 W/4 Ω specification.

Part Context

The FDA803S belongs to STMicroelectronics' second-generation FDA series of Class-D amplifiers. This family is specifically engineered for remote information processing and emergency communication systems in vehicles. The FDA803S represents a compact solution combining high-performance audio amplification with advanced digital interface capabilities.

FAQ

What digital audio interfaces does the FDA803S support?

The FDA803S supports I2S and TDM digital bit streams, accommodating up to 16 channels with sampling frequencies ranging from 8 kHz to 96 kHz.

Does the FDA803S include internal diagnostics?

Yes, the FDA803S embeds complete diagnostic functionality during operation to support OEM requirements for speaker control and system reliability.