Compact Audio Amplifier Designed Particularly For Automotive Purposes

The FDA903S is the brand new ST single channel class-D audio amplifier providing speaker management and system robustness/ reliability.

STMicroelectronics FDA903S Class-D Automotive Audio Amplifier is particularly designed for automotive purposes, particularly e-Name and telematics. The FDA903S incorporates a 24-bit, 100dB DAC conversion and PWM class-D output stage with suggestions earlier than the LC filter. This configuration can create the design of a compact and cheap utility.

The STM FDA903S Class-D Automotive Audio Amplifier helps I2S and TDM digital bit streams as much as 16CH with a number of sampling frequencies from 8kHz to 96kHz. FDA903S embeds an entire diagnostic in play, together with real-time load-current monitoring and a digital admittance meter, to ship essentially the most demanding OEM necessities relating to speaker management and system robustness/ reliability. The FDA903S helps begin cease cranking down to three.3V.

Options

• AEC-Q100 certified
• Built-in 100 dB D/A conversion
• I2S and TDM digital enter (as much as 16CH TDM)
• Selectable enter pattern price frequency (8/16/32/44.1/48/96)
• 3.3V to 18V Large provide working vary
• PWM frequency switching selectable by I2C352.8kHz, 384kHz, 411.6kHz, 448kHz
• 2x I2C addresses
• MOSFET energy outputs

-Typ 10W 4Ω @ 14.4V, 1kHz THD = 1%

-Typ 5W 8Ω @ 14.4V, 1kHz THD = 1%

• Noise: 80μV A-weighted: 20kHz
• 8Ω, 4Ω driving functionality
• Enter amplitude limiter (configurable by I2C)
• Load present monitor
• 2 CD/Diag pin
• Built-in ESD and quick circuit safety
• I2C full configurability and diagnostic

-Startup diagnostic
-Enter voltage amplitude limiter operate (configurable by I2C)
-4x Thermal warning
-DC diagnostic
-OCP safety scheme configurable
-Mute time configuration
-DAM (Digital-Admittance-Meter)

• Functionality to run an entire diagnostic in play

-Configurable clipping detector
-One of many thermal warnings
-Over present safety
-Open load detection
-Excessive voltage mute

• QFN32 with wettable flanks