industry news
Subscribe Now

Class-D Amplifier for High-Definition Automotive Audio from STMicroelectronics Adds Diagnostics for Safety Alerting

Geneva, March 2, 2021 – The HFDA801A from STMicroelectronics is a high-resolution audio amplifier that is specifically designed for compact, cost-effective automotive applications.

The HFDA801A is a 2MHz switching pulse-width modulation (PWM) Class-D amplifier with a quad-bridge configuration. An integrated high-performance digital-to-analog converter (DAC) ensures hi-fi quality sound under any load condition, with noiseless turn-on/turn-off and without creating any output artifacts. With a signal-to-noise ratio of 121dB, 120dB dynamic range, and only 10μV output noise, the HFDA801A delivers an extraordinary level of audio performance from an inexpensive small form-factor component.

The feedback configuration with integrated L-C low-pass filter provides an ultra-wide flat frequency response up to 80kHz and minimizes dependence on external components. The wide bandwidth allows use in high-definition (HD) audio applications, letting designers rely on excellent linearity and low distortion that are independent of the inductor and capacitor quality.

The specific architecture implemented derives all required voltages internally, enabling the HFDA801A to draw its supply from the vehicle battery without the need for additional power converters. The amplifier benefits from a wide range of load capabilities, ensuring stable performance even while driving high power on low-impedance loads of 2Ω on all four channels.

In addition, by integrating in-play diagnostics as well as a digital impedance meter and real-time load-current monitor, the HFDA801A can be used in safety-related audio applications that must demonstrate ASIL compliance, such as Acoustic Vehicle Alerting Systems (AVAS).

The HFDA801A is sampling now and will be in production in the second half of 2021. Please contact your ST sales office for pricing options and sample requests.

For more information please go to www.st.com/hfda801a

Leave a Reply

featured blogs
Apr 14, 2021
By Simon Favre If you're not using critical area analysis and design for manufacturing to… The post DFM: Still a really good thing to do! appeared first on Design with Calibre....
Apr 14, 2021
You put your design through a multitude of tools for various transformations. Going back to formal verification in between every change to rely on your simulation tools can be a rigorous approach,... [[ Click on the title to access the full blog on the Cadence Community site...
Apr 14, 2021
Hybrid Cloud architecture enables innovation in AI chip design; learn how our partnership with IBM combines the best in EDA & HPC to improve AI performance. The post Synopsys and IBM Research: Driving Real Progress in Large-Scale AI Silicon and Implementing a Hybrid Clo...
Apr 13, 2021
The human brain is very good at understanding the world around us.  An everyday example can be found when driving a car.  An experienced driver will be able to judge how large their car is, and how close they can approach an obstacle.  The driver does not need ...

featured video

The Verification World We Know is About to be Revolutionized

Sponsored by Cadence Design Systems

Designs and software are growing in complexity. With verification, you need the right tool at the right time. Cadence® Palladium® Z2 emulation and Protium™ X2 prototyping dynamic duo address challenges of advanced applications from mobile to consumer and hyperscale computing. With a seamlessly integrated flow, unified debug, common interfaces, and testbench content across the systems, the dynamic duo offers rapid design migration and testing from emulation to prototyping. See them in action.

Click here for more information

featured paper

Understanding the Foundations of Quiescent Current in Linear Power Systems

Sponsored by Texas Instruments

Minimizing power consumption is an important design consideration, especially in battery-powered systems that utilize linear regulators or low-dropout regulators (LDOs). Read this new whitepaper to learn the fundamentals of IQ in linear-power systems, how to predict behavior in dropout conditions, and maintain minimal disturbance during the load transient response.

Click here to download the whitepaper

Featured Chalk Talk

Rail Data Connectivity

Sponsored by Mouser Electronics and TE Connectivity

The rail industry is undergoing a technological revolution right now, and Ethernet connectivity is at the heart of it. But, finding the right interconnect solutions for high-reliability applications such as rail isn’t easy. In this episode of Chalk Talk, Amelia Dalton chats with Egbert Stellinga from TE Connectivity about TE’s portfolio of interconnect solutions for rail and other reliability-critical applications.

Click here for more information about TE Connectivity EN50155 Managed Ethernet Switches