Through the I2S interface, TDM digital audio input and filtered feedback topology provide low noise, high quality signal. These two mono 1x45W Class D amplifiers simplify application design and save bill of materials. In addition, FDA803D and FDA903D are also integrated. I2C automotive-grade diagnostics, including exclusive playback mode DC offset monitoring and open-circuit load detection, can be used to design next-generation amplifiers for economical basic safety equipment. These integrated features also simplify automotive mandatory safety standards ISO 26262 ASIL (Automotive Safety) Certification of integrity level).
The FDA903D also adds a load current monitoring feature that continuously monitors the speaker current for advanced diagnostics and improved speaker performance.
The new product expands ST's FDA family of automotive-grade, high-reliability all-digital audio amplifiers. The FDA family also includes 2-channel products with integrated reliable diagnostics and ST's innovative post-filter feedback concept and a maximum output power of 4x135W. 4 channel products.
By providing low distortion, high quality audio signals, the FDA803D and FDA903D can be used to increase the number of channels in high-end infotainment systems, and can be integrated into safety devices to drive minimum load to 2Ω speakers with built-in output power limiting to protect Small or low-cost speakers. PowerSSO36 package has exposed heat sink on the bottom, which makes the new product energy efficiency up to 90% (4Ω, 1kHz, 20W), excellent heat dissipation, support for no heat sink design, reduce module size, simplify vehicle installation.
The FDA803D and FDA903D have a wide supply voltage range of 3.3V to 18V. They can be used in a variety of on-board equipment powered by automotive batteries or other power supplies. CISPR Class V testing ensures that the terminal design meets stringent automotive EMC specifications.
Production grade samples of these two devices are available now.