FDA803S-6DY

Overview

The FDA803S-6DY 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. It features comprehensive diagnostics, including thermal warnings, over-current protection, open load detection, and clipping detection.

Feature Summary

• Integrates 24-bit, 100 dB D/A conversion and PWM class-D output stage with pre-filter feedback for compact design
• Supports direct I2S and TDM digital inputs with selectable sample rates from 8 kHz to 96 kHz
• Embeds complete diagnostic capabilities in play mode, including thermal, DC, and over-current protection
• Wide operating voltage range from 3.3 V to 18 V, suitable for automotive start-stop systems

Applications

• Automotive telematics systems
• e-Call emergency call units
• Car audio amplification
• Digital input speaker drivers

Procurement Notes

Verify the specific suffix -6DY against the official STMicroelectronics datasheet to confirm package type and tape/reel specifications. Ensure compatibility with AEC-Q100 qualification requirements for your automotive application level. Cross-reference the pinout and electrical characteristics with the latest revision of the FDA803S datasheet to avoid integration errors during PCB layout and system validation.

Selection Notes

Select this component when a single-channel solution with integrated high-resolution DAC and digital interface is required for automotive environments. It is suitable for designs needing robust diagnostics and wide voltage tolerance. Consider alternative FDA series models if higher channel counts or different packaging options are needed. Verify that the 10 W output power meets the acoustic requirements of the target speaker configuration.

Part Context

The FDA803S belongs to STMicroelectronics' second-generation FDA family of Class-D automotive amplifiers. This series is specifically engineered for remote information processing and emergency calling applications. The FDA803S represents a compact, cost-effective solution by integrating digital-to-analog conversion directly on-chip, reducing external component count compared to previous analog-input designs.

FAQ

What digital audio interfaces does the FDA803S support?

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

Does the FDA803S include internal diagnostics?

Yes, it embeds comprehensive diagnostics including startup checks, thermal warnings, over-current protection, open load detection, and clipping detection, which can be configured via I2C.