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CS35L41 データシート(PDF) 2 Page - Cirrus Logic |
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CS35L41 データシート(HTML) 2 Page - Cirrus Logic |
2 / 2 page CS35L41 Boosted Class D Audio Amplifier with DSP CS35L41 Package Size and Footprint CS35L41 Package Size and Footprint: 74% smaller than nearest smart amplifier competitor Space Saving Package Enhanced Audio and Battery Performance © 2018 Cirrus Logic, Inc. All rights reserved. Cirrus Logic, Cirrus, the Cirrus Logic logo design, and SoundClear are trademarks of Cirrus Logic, Inc. Other brand and product names in this document may be trademarks or service marks of their respective owners. Cirrus Logic, Inc. 800 West Sixth Street Austin, Texas 78701 United States T+1-512-851-4000 Sales Support North America +1-800-888-5016 Asia Pacific +852 2376-0801 Japan +81-(3)-5782-8180 Europe/UK +44-(0)-131-272-7000 NOVEMBER 2018 cirrus.com 5.64 mm2 8.91 mm2 11.2 mm2 2.2884 mm 2.51 mm 3.2 mm Figure 2 – Class G and Class H Supply Rail Voltage vs. Time Vbat 3.6 V Wasted Power Cirrus Logic Class H Boost Supply Example Class G Boost Supply Figure 3 – Predictive Battery Management Performance With Cirrus Logic Advanced Battery Management System With no battery management Phone Battery Voltage while playing stereo audio through speakers Vbat 3.6 V Audio Enhancement Cirrus Logic’s SoundClear Playback provides the ability to fine tune the CS35L41 to the specific micro speaker being used in the mobile system. Equalization, compression and psychoacoustic enhancement algorithms improve sound clarity and increase loudness. Playback filtering compensates for the unique frequency response of the speaker while eliminating pre-ringing found in conventional linear phase filters as shown in Figure 1. These algorithms are integrated into the on-chip DSP and prevent additional workloads from being placed on the application processor. Battery Management The CS35L41 preserves battery life using an advanced battery management system in addition to its Class H boost and extremely low quiescent current. As illustrated in Figure 2, the Class H DC-DC converter boosts the supply while maintaining higher efficiency than the Class G boost regulators commonly used in other smart amplifiers. The battery management system predictively adapts to changing audio, speaker and battery conditions by intelligently regulating battery current to protect the amplifier from drawing high currents that can cause a system brownout if managed incorrectly. Figure 3 shows that by predictively managing the demand on the battery, the amplifier is able to maximize loudness and audio quality while minimizing the power impact to the mobile device. Conventional Linear Phase Filter Pre-ringing of a Conventional Linear Phase Filter Playback Filter Response Figure 1 – Playback Filtering |
同様の部品番号 - CS35L41 |
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同様の説明 - CS35L41 |
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