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STA438A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
STA438ASK200Yes

STA438A** is a Class D audio amplifier IC manufactured by **STMicroelectronics**.

The STA438A is a Class D audio amplifier IC manufactured by STMicroelectronics. Below are the key specifications, descriptions, and features:

Specifications:

  • Output Power:
  • 2 x 38W (4Ω, 15V, THD = 10%)
  • 2 x 20W (8Ω, 15V, THD = 10%)
  • Supply Voltage Range: 4.5V to 18V
  • Efficiency: Up to 90% (Class D operation)
  • THD+N (Total Harmonic Distortion + Noise): <0.1% (1W, 8Ω)
  • Signal-to-Noise Ratio (SNR): >95dB
  • Operating Temperature Range: -40°C to +85°C
  • Package: PowerSSO-36

Descriptions:

  • The STA438A is a dual-channel Class D amplifier designed for high-efficiency audio applications.
  • It integrates PWM modulation and output power stages, reducing external component count.
  • Features short-circuit protection, thermal shutdown, and overload detection for reliability.
  • Suitable for portable audio devices, TVs, home audio systems, and automotive infotainment.

Features:

  • High Efficiency: Class D topology minimizes power dissipation.
  • Low EMI Emission: Optimized switching reduces electromagnetic interference.
  • Standby Mode: Low quiescent current for power-saving applications.
  • Pop & Click Suppression: Minimizes audible noise during power-on/off.
  • Flexible Input Configuration: Supports single-ended and differential inputs.

For detailed datasheets, refer to STMicroelectronics' official documentation.

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