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The TDA7494 is a class-D audio amplifier manufactured by STMicroelectronics. Here are its key specifications, descriptions, and features from the Manufactor Datasheet:

Specifications:

• Output Power:
• 50W + 50W (stereo) at 4Ω, THD = 10%, VS = 24V
• 30W + 30W (stereo) at 8Ω, THD = 10%, VS = 24V
• Supply Voltage (VS): 10V to 26V
• Efficiency: Up to 90% (typical)
• THD+N (Total Harmonic Distortion + Noise): 0.1% (typical at 1W, 8Ω)
• Signal-to-Noise Ratio (SNR): >95dB (A-weighted)
• Operating Temperature Range: -40°C to +85°C
• Package: PowerSO-36

Descriptions:

• The TDA7494 is a dual BTL (Bridge-Tied Load) class-D amplifier designed for high-efficiency audio applications.
• It features built-in protection circuits, including thermal shutdown, overcurrent, and short-circuit protection.
• The amplifier operates in PWM (Pulse Width Modulation) mode for minimal power dissipation.

Features:

• High Power Output: Capable of driving 50W per channel into 4Ω loads.
• Low Distortion: Low THD+N for high-quality audio performance.
• Standby and Mute Functions: Allows power-saving modes.
• No External Heatsink Required: Efficient thermal management due to class-D operation.
• Pop-Free Start-Up: Minimizes unwanted noise during power-on.
• Single-Supply Operation: Simplifies power supply design.

This information is based on the manufacturer's datasheet for the TDA7494 by STMicroelectronics.