STMicroelectronics FDA901 Automotive Power Amplifier
STMicroelectronics FDA901 Automotive Power Amplifier is a quad-bridge Class D (BCD) amplifier designed for car radio automotive applications. The module integrates a high-performance D/A converter with powerful MOSFET outputs in class D to provide outstanding efficiency compared to the standard class AB. The integrated D/A converter allows outstanding performances (115dB S/N ratio with 110dB of dynamic range). The feedback loop includes the output L-C lowpass filter, allowing superior frequency response linearity and lower distortion independently from the inductor and capacitor quality. STMicroelectronics FDA901 Automotive Power Amplifier is AEC-Q100 qualified.
Features
- Designed for car radio automotive applications
- Integrated 110dB D/A conversion
- I2S and TDM digital input (3.3/1.8V)
- Input sampling frequency: 44.1kHz, 48kHz, 96kHz, and 192kHz
- Class-D channels with 93% efficiency
- CISPR25 - Class V (fourth edition)
- Low radiation function (LRF)
- Idle tone-free DAC
- Output lowpass filter included in feedback for superior audio performance
- High output power capability
- 28W/4 Ω 10% THD, Vd = 14.4V
- Maximum output power of 4 x 50W/4Ω at 15.2V, 1kHz
- Full I2C bus driving (3.3/1.8 V)
- Channel independent eco-mode
- Channel independent soft play/mute
- I2C bus diagnostics, including DC and AC load detection and load value recognition
- Integrated fault protection
- Input and output offset detector
- Clipping detector
- Real-time load current monitoring (on I2C and TDM data lines)
- ESD protection
- 6V operation (start-stop engine compatibility)
- 2Ω and 1Ω load driving capability
- AEC-Q100 qualified
Block Diagram
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Published: 2020-03-11
| Updated: 2025-01-22