HFDA801A Series

4x80W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2MHz switching frequency and High Resolution Bandwidth

Manufacturer: STMicroelectronics

Catalog

4x80W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2MHz switching frequency and High Resolution Bandwidth

Part	Grade	Package / Case	Mounting Type	Type	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Supplier Device Package	Qualification	Voltage - Supply [Min]	Voltage - Supply [Max]	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load [custom]
STMicroelectronics HFDA801A-VYY	Automotive	64-LQFP Exposed Pad	Surface Mount	Class D	105 °C	-40 °C	4-Channel (Quad)	64-LQFP-EP (10x10)	AEC-Q100	4.5 V	25 V	4 Ohm 80 W	4

Catalog

4x80W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2MHz switching frequency and High Resolution Bandwidth

Key Features

• PWM 2 MHz switching PWM:

- Reduced size and cost of output LC

• High resolution bandwidth support:

- Up to 40 kHz (I2S 96 kHz) with attenuation [0 dB, -2 dB]

- Up to 80 kHz (I2S 192 kHz) with attenuation [0 dB, -2 dB]

• MOSFET power outputs allowing high output power capability:

- Typ 4 x 30 W/4 Ω @ 14.4 V, 1 kHz THD = 10%

- Typ 4 x 25 W/4 Ω @ 14.4 V, 1 kHz THD = 1%

- Typ 4 x 50 W/2 Ω @ 14.4 V 1 kHz THD = 10 %

- Typ 4 x 80 W/4 Ω @ 25 V, 1 kHz THD = 10 %

• IC full configurability and diagnostic:

- 4 x Thermal warning and average junction temperature measurement on I2C (8 bits)

- AC and DC diagnostic (independent of channel)

- OCP protection scheme configurable (4 x OCP limit selectable)

- Mute time configuration

- DIM (digital impedance meter)

- Feedback after filter configuration

• Capability to run complete diagnostic in play:

- Short to GND/VCC

- DC offset detector

• Extremely Low noise:

- 13 µV A-weighted; 20 kHz (high gain) typ

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-bit 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.