STMicroelectronics STEVAL-CCA042V1

Overview

STEVAL-CCA042V1 from STMicroelectronics is a dual-channel 20 W + 20 W Class-D audio amplifier demonstration board based on the TDA7491HV IC, operating in BTL mode with filterless output, wide 5–18 V single-supply range, and 90% peak efficiency. It supports differential inputs, four fixed gain settings (20/26/30/32 dB), and integrated standby/mute control for compact audio subsystem validation.

For engineers reviewing the STEVAL-CCA042V1 datasheet, STEVAL-CCA042V1 pinout, STEVAL-CCA042V1 application, or STEVAL-CCA042V1 equivalent, this board enables rapid evaluation of high-efficiency, heatsink-free Class-D amplification in consumer audio, portable speaker systems, and embedded soundbars under real-world thermal and power-supply conditions.

Technical Context

The board implements the TDA7491HV in PSSO36 (slug-down) package, leveraging its integrated gate drivers, PWM modulator, and protection circuitry to deliver 20 W per channel into 8 Ω at 18 V with THD = 10%. Its filterless operation eliminates external LC output filters, reducing BOM count and PCB area.

Differential input architecture suppresses common-mode noise from shared supply rails or digital interfaces, while external synchronization allows multi-board timing alignment in stereo or multi-zone audio systems. Standby and mute functions are controlled via onboard microswitches for deterministic system-level power sequencing.

Key Specifications

Availability

STEVAL-CCA042V1 is available at Aetrix Electronics and suitable for consumer audio reference design, portable speaker prototyping, and embedded soundbar development requiring stable component supply and documented evaluation platform traceability.

Supply support for STEVAL-CCA042V1 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 headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

This board belongs to ST's STEVAL (ST Evaluation) series, purpose-built to accelerate functional validation and system integration of ST's high-performance analog and audio ICs in real-world applications.

FAQ

What power supply voltage range is supported by the STEVAL-CCA042V1?

The board operates from a single 5 V to 18 V DC supply. At 12 V, it delivers 9.5 W + 9.5 W per channel into 8 Ω (THD = 10%); at 18 V, output rises to 20 W + 20 W. The wide range supports both battery-powered and AC-adapter-based audio systems without redesign.

Does the STEVAL-CCA042V1 require an external LC output filter?

No. The board uses the TDA7491HV's filterless modulation architecture, eliminating the need for external LC filters. This reduces component count, PCB area, and cost while maintaining EMI compliance through spread-spectrum PWM techniques specified in the device datasheet.

How are gain and input configuration controlled on this board?

Gain selection (20/26/30/32 dB) and input mode (single-ended or differential) are set via onboard jumpers. Differential input is enabled by default; jumper reconfiguration allows verification of noise rejection performance versus legacy single-ended source interfaces.

Can the STEVAL-CCA042V1 be synchronized with other audio boards?

Yes. The TDA7491HV features an external synchronization input, accessible on the board's test points. Applying a master clock signal (e.g., 384 kHz) enables precise PWM phase alignment across multiple STEVAL-CCA042V1 units for stereo or multi-channel coherent audio playback.