HFDA802 Series

2 x 80 W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2 MHz switching frequency and High Resolution Bandwidth

Manufacturer: STMicroelectronics

Catalog

2 x 80 W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2 MHz switching frequency and High Resolution Bandwidth

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Grade	Qualification	Type	Mounting Type	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Max Output Power x Channels @ Load
STMicroelectronics HFDA802-VYT	64-LQFP-EP (10x10)	105 °C	-40 °C	2-Channel (Stereo)	Automotive	AEC-Q100	Class D	Surface Mount	64-LQFP Exposed Pad	4.5 V	25 V	2 80 W
STMicroelectronics HFDA802-VYY	64-LQFP-EP (10x10)	105 °C	-40 °C	2-Channel (Stereo)	Automotive	AEC-Q100	Class D	Surface Mount	64-LQFP Exposed Pad	4.5 V	25 V	2 80 W

Catalog

2 x 80 W digital input class-D automotive audio amplifier with Hi-Fi audio quality, advanced diagnostics, 2 MHz 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 2 x 30 W/4 Ω @ 14.4 V, 1 kHz THD = 10%

- Typ 2 x 25 W/4 Ω @ 14.4 V, 1 kHz THD = 1%

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

- Typ 2 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

HFDA802 is the new ST class-D audio amplifier, specifically designed for automotive applications in the latest BCD technology. The HFDA802 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. HFDA802 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. HFDA802 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 HFDA802 is suitable for any level of automotive application.