STMicroelectronics EVAL-FDA903Q-SA

Overview

EVAL-FDA903Q-SA from STMicroelectronics is an evaluation board for the FDA803Q and FDA903Q automotive-grade digital Class-D audio power amplifiers in VFQFPN48 slug-down package, supporting I²S/TDM and I²C interfaces, full diagnostics, and 3.3 V–18 V operation for battery-powered vehicle infotainment systems.

For engineers reviewing the EVAL-FDA903Q-SA datasheet, EVAL-FDA903Q-SA pinout, EVAL-FDA903Q-SA application, or EVAL-FDA903Q-SA equivalent, this board enables rapid validation of FDA803Q/FDA903Q amplifier performance in automotive audio subsystems including head unit amplification, active noise cancellation, and rear-seat entertainment with diagnostic feedback and flexible digital audio interface configuration.

Technical Context

The EVAL-FDA903Q-SA implements a single-channel Class-D amplifier reference design optimized for AEC-Q100 qualified FDA803Q and FDA903Q ICs. It provides direct access to all digital control (I²C), audio input (I²S/TDM), and diagnostic output signals, with on-board power conditioning for 3.3 V logic and 5 V–18 V amplifier supply rails.

Board-level features include test points for PWM output monitoring, configurable I²S format selection (left-justified, right-justified, I²S, TDM), jumper-selectable I²C address, and fault reporting via LED and GPIO. No microcontroller or host processor is integrated - it operates as a passive evaluation interface to external audio sources and controllers.

Key Specifications

Availability

EVAL-FDA903Q-SA is available at Aetrix Electronics and suitable for automotive infotainment development, active noise cancellation prototyping, and rear-seat entertainment system validation requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-FDA903Q-SA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader delivering intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer applications.

This board belongs to ST's automotive audio evaluation platform family, designed specifically to accelerate qualification and integration of their AEC-Q100-compliant Class-D amplifier ICs into vehicle audio ECUs and ADAS-related acoustic subsystems.

FAQ

Does EVAL-FDA903Q-SA support both FDA803Q and FDA903Q ICs without hardware modification?

Yes. The board is mechanically and electrically identical for both FDA803Q and FDA903Q, sharing the same VFQFPN48 footprint, pinout mapping, and interface routing. No soldering or jumper changes are required to swap between the two devices - only firmware register settings differ per device datasheet.

What audio formats does the I²S/TDM interface support out-of-the-box?

The board supports standard I²S (MSB-first, left-justified, right-justified) and TDM modes with up to 8 time slots. Format selection is controlled by on-board jumpers and corresponding I²C register writes - no FPGA or external logic is needed to configure frame structure or sample rate alignment.

Is external power supply filtering required when using 12 V automotive battery input?

No. The board integrates dedicated LC filtering and transient voltage suppression on the 5 V–18 V analog rail, meeting ISO 7637-2 pulse 5a/b requirements. Input accepts raw battery voltage directly; no additional external filtering is necessary for lab or bench validation.

Can EVAL-FDA903Q-SA be used for EMC pre-compliance testing?

Yes. The board includes layout-optimized ground planes, shielded signal routing, and ferrite-bead-filtered power paths aligned with CISPR 25 Class 5 guidelines. While not certified, its construction supports repeatable radiated/conducted emissions measurements during early-stage amplifier EMI characterization.