Overview
The FDA903D-EHT is a high-performance, single-bridge class D amplifier designed by STMicroelectronics for automotive audio applications. It is built using advanced BCD (Bipolar-CMOS-DMOS) technology, making it compact, powerful, and highly efficient, with an efficiency of up to 90%. This amplifier is suitable for various automotive audio systems, including car radios, telematics, e-call systems, noise and tone generators, and more.
Key Specifications
| Parameter | Value |
|---|---|
| Output Power | 1 x 45 W @ 4 Ω, 1 kHz THD = 1% |
| Input Sampling Frequency | 44.1 kHz, 48 kHz, 96 kHz, 192 kHz |
| Digital Input | I2S and TDM (4/8/16CH TDM) |
| Operating Voltage Range | 3.3 V to 18 V |
| Package | PowerSSO-36 exposed pad down |
| I2C Bus Interface | Full I2C bus driving (3.3/1.8 V) |
| Thermal Protection | Integrated thermal protection, four thermal warnings |
| Diagnostic Features | Short to VCC/GND, short load and open load detection, DC offset detector, hot spot detection |
| ESD Protection | Integrated short circuit and ESD protections |
| Operating Temperature | -40°C to 150°C |
Key Features
- AEC-Q100 qualified for automotive reliability
- Integrated 108 dB D/A conversion for high audio quality
- Wide operating supply range from 3.3 to 18 V, compatible with car battery levels and external step-down voltages
- MOSFET power outputs for high output power capability
- Configurable power limiting function through I2C interface
- Legacy mode (no I2C mode) with four configurable settings
- Output lowpass filter included in the feedback for superior frequency response linearity and lower distortion
- Clipping detector and integrated thermal protection
- Short circuit and ESD integrated protections
Applications
The FDA903D-EHT is designed for a variety of automotive audio applications, including:
- Car radios
- Telematics systems
- E-call systems
- Noise and tone generators
- Other automotive infotainment systems
Q & A
- What is the output power of the FDA903D-EHT? The FDA903D-EHT can deliver up to 1 x 45 W @ 4 Ω, with a THD of 1% at 1 kHz.
- What are the input sampling frequencies supported by the FDA903D-EHT? The amplifier supports input sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz.
- What type of digital input does the FDA903D-EHT support? It supports I2S and TDM digital inputs (4/8/16CH TDM).
- What is the operating voltage range of the FDA903D-EHT? The operating voltage range is from 3.3 V to 18 V.
- Is the FDA903D-EHT AEC-Q100 qualified? Yes, it is AEC-Q100 qualified, ensuring reliability for automotive applications.
- What diagnostic features are included in the FDA903D-EHT? It includes short to VCC/GND, short load and open load detection, DC offset detector, hot spot detection, and four thermal warnings.
- Does the FDA903D-EHT have integrated thermal protection? Yes, it has integrated thermal protection.
- What package type is the FDA903D-EHT available in? It is available in the PowerSSO-36 exposed pad down package.
- Can the FDA903D-EHT be configured through an I2C interface? Yes, it can be configured through a full I2C bus interface (3.3/1.8 V).
- Does the FDA903D-EHT support legacy mode without I2C? Yes, it supports legacy mode (no I2C mode) with four configurable settings.
