HFDA801A Data brief 4 x 80W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2 MHz switching frequency and High Resolution Bandwidth Features AEC-Q100 qualification on going Integrated 120 dB D/A conversion LQFP64 (exposed pad up) 2 I S and TDM digital input (up to 16 CH TDM) Selectable input sample rate frequency (44.1/48/96/192 kHz) Wide supply operating range: 4.5 V - 2518 V (5 V min at turn-on transition) PWM 2 MHz switching PWM: Reduced size and cost of output LC High Resolution Bandwidth support: 2 Up to 40 kHz (I S 96 kHz) with attenuation 0 dB, -2 dB 2 Up to 80 kHz (I S 192 kHz) with attenuation 0 dB, -2 dB 2 4 I C addresses 4 , 2 , 1 driving with output channels parallelization MOSFET power outputs allowing high output power capability: Typ 4 x 30 W /4 14.4 V, 1 kHz THD = 10% Typ 4 x 25 W /4 14.4 V, 1 kHz THD = 1% Typ 4 x 50 W/2 14.4 V 1 kHz THD =10 % Typ 4 x 80 W/4 25V V, 1 kHz THD =10 % 2 I C full configurability and diagnostic: 4 x Thermal warning and average junction temperature measurement on Product status link 2 I C (8 bits) HFDA801A AC and DC diagnostic (independent of channel) Product summary OCP protection scheme configurable (4 x OCP limit selectable) Mute time configuration Order code Package Packing DIM (digital impedance meter) HFDA801A- Tray LQFP64 VYY Feedback after filter configuration (exp. pad Capability to run complete diagnostic in play: HFDA801A- up) Tape&Reel VYT Short to GND/VCC DC offset detector Extremely Low noise: 13 V A-weighted 20 kHz (high gain) typ Very low THD: 0.02% at 1 W 1 kHz on 4 and 2 loads typ 0.08% 20-20 kHz (full audio band) on 4 and 2 loads (1 W) CD/Diag pin (3 selectable CD thresholds) 2 Synchronization output pin (only with TDM input stream, on I Sdata2) Channel independent Mute/Play/Gain selection/Diagnostic Real Time current monitor Open Load in play Battery load dump compatible (40 V) DB4402 - Rev 1 - January 2021 www.st.com For further information contact your local STMicroelectronics sales office.HFDA801A Immune to pop/tick noise at turn on /off, battery variations (inside the operative range), during diagnostic EMI compliance evaluated according to CISPR25 2 Legacy (no I C mode) Integrated short circuit protections ESD integrated protections (2 kV HBM, 500 V / 750 V corner CDM) LQFP64 exposed pad up package Description HFDA801A is the new ST class-D audio amplifier, specifically designed for automotive applications in the latest BCD technology. The HFDA801A integrates a 24-bits 120 dB DAC conversion, and features 2 MHz switching PWM class D output stage. This configuration enables the design of a compact and inexpensive application, reaching at the same time outstanding level of audio performances. HFDA801A supports wide band applications (80 kHz), with extremely low level of noise and low THD. Moreover it features the most complete diagnostic matrix, including full diagnostic in play to support the most demanding OEM requirements in terms of speaker control and system robustness/ reliability. HFDA801A supports start stop cranking down to 4.5 V (5 V at turn on) and it is housed in a very compact and thin LQFP 10x10 package. Thus the HFDA801A is suitable for any level of automotive application. DB4402 - Rev 1 page 2/17