描述 Description

The FDA803S is the new ST single channel class-D audio amplifier, specifically designed for automotive applications. The FDA803S integrates a 24-bit, 100 dB DAC conversion and PWM class-D output stage with feedback before LC filter. This configuration enables the design of a compact and inexpensive application.

The FDA803S supports I2S and TDM digital bit stream up to 16CH with several sampling frequencies from 8?kHz up to 96 kHz. FDA803S embeds a complete diagnostic in play to support the most demanding OEM requirements in terms of speaker control and system robustness/ reliability.

The FDA803S supports start stop cranking down to 3.3 V and it is available in a very compact and thin QFN 5x5 package. Thus the FDA803S is suitable for any level of automotive application especially e-Call and Telematics.

特性 Features

? AEC-Q100 qualified
? Integrated 100 dB D/A conversion
? I2S and TDM digital input (up to 16CH TDM)
? Selectable input sample rate frequency (8/16/32/44.1/48/96 kHz)
? Wide supply operating range: 3.3 V - 18 V
? PWM frequency switching selectable by I2C
?352.8 kHz, 384kHz, 411.6 kHz, 448 kHz
? 2 I2C addresses
? MOSFET power outputs
?Typ 10 W 4 Ω at 14.4 V, 1 kHz THD = 1%
?Typ 5 W 8 Ω at 14.4 V, 1 kHz THD = 1%
? Noise: 38 μV A-weighted: 20 kHz
? 8 Ω, 4 Ω driving capability
? Input amplitude limiter (configurable through I2C)
? I2C full configurability and diagnostic
?Startup diagnostic
?Input voltage amplitude limiter function (configurable through I2C)
?4 x Thermal warning
?DC diagnostic
?OCP protection scheme configurable
?Mute time configuration
? Capability to run complete diagnostic in play
?Configurable Clipping Detector
?One of the Thermal Warnings
?Over Current Protection
?Open Load detection
?High voltage mute
? 2 CD/Diag pin
? Integrated ESD and short circuit protection
? QFN32 wettable flanks
? Tested according to CISPR 25 - Class V (Fourth edition)