The STA485A is a high-performance Class D audio amplifier IC manufactured by STMicroelectronics.
Key Specifications:
- Supply Voltage Range: 4.5V to 26V
- Output Power: Up to 2 × 50W (into 4Ω at 21V)
- Efficiency: >90% (typical)
- THD+N: <0.1% (typical)
- Signal-to-Noise Ratio (SNR): >100dB
- Operating Frequency: Adjustable (300kHz to 1MHz)
- Package: PowerSSO-36
Descriptions and Features:
- Class D Amplifier: Provides high efficiency with low heat dissipation.
- Stereo/Mono Configurations: Supports both stereo (2-channel) and mono (bridged) operation.
- Advanced Protection Circuits: Includes thermal shutdown, overcurrent, and undervoltage protection.
- Wide Supply Voltage Range: Suitable for various applications from portable devices to automotive audio.
- Adjustable Switching Frequency: Allows optimization for EMI and efficiency.
- Pop & Click Suppression: Minimizes noise during power-on/off.
- Standby Mode: Low-power consumption when inactive.
The STA485A is commonly used in home audio systems, automotive amplifiers, and multimedia speakers.