Cirrus Logic Introduces Industry’s Smallest, Low-Power Boosted Smart Audio Amplifier to Support Global Shift to Mobile Stereo

Listening to music, streaming video and gaming on smartphones just got better with a boost from Cirrus Logic’s (NASDAQ: CRUS) latest boosted smart audio amplifier. The Cirrus Logic CS35L41 smart power amplifier is designed to support the growing trend toward stereo audio in smartphones and portable devices. It delivers enriched audio clarity and loudness with advanced power management, all in a small package – nearly half the size of other leading DSP smart amps. By tackling the complex engineering challenges inherent in mobile stereo audio design, Cirrus Logic enables OEMs of smartphone and battery-powered portable devices to introduce a markedly improved audio listening experience for both mono and stereo applications, while conserving battery life.

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Thanks to mobile stereo and smart power amplifier technology from Cirrus Logic, consumers can put their smartphones on speaker mode and use it as their primary device for enjoying music from anywhere. (Photo: Business Wire)

The Cirrus Logic CS35L41 11-volt boosted Class D audio amplifier with DSP, complemented with Cirrus Logic’s SoundClear Playback software, improves audio quality and increases the loudness of smartphone speaker output while protecting the speaker using both hardware and software techniques. Its advanced battery management system and predictive algorithms adapt to changing audio, speaker and battery conditions to minimize power consumption and battery current, without sacrificing audio performance. This new smart power amplifier also uses 55 nm process technology, the most advanced for this class of amplifiers, resulting in a tiny, 5.64 mm² space-saving WLCS package. This is important to OEMs who want to include a two-speaker design, as well as pack in as many new features and functions as possible.

According to a SAR Audio Signal Chain IC forecast database from Q4 2018, market shipments for audio amplifiers have grown 3x from 2010 to 2018 due to the increasing shipments of audio playing devices, and also the increasing number of channels per device. “Amplifier shipment growth in the smart phone market is due not only to an increase in stereo sound in high-end phones but also the mid-tier market, defined as phones priced between $200 and $500,” said SAR Insight principal analyst, Peter Cooney. “We anticipate this growth to continue with an estimated increase from the 500 million amplifiers shipped into mid-tier phones in 2017, to almost 700 million by 2022.”