Low-Power Audio DSP with Microphone Interface and Mono Differential Headphone Driver

The CS47L63 is a high-performance low-power audio DSP for earbud headphones and other portable audio devices. The CS47L63 combines a programmable Halo Core DSP with a variety of power-efficient fixed-function audio processors. The high-performance DAC and differential output driver are optimized for direct connection to the external headphone load. The Halo Core DSP is integrated within a fully flexible, all-digital mixing and routing engine with sample-rate converters, for wide use-case flexibility. The CS47L63 supports up to four analog inputs or up to four PDM digital inputs. Low-power input modes are available for always-on (e.g., voice-trigger) functionality using either analog or digital input. Two digital audio serial ports are provided, each supporting multichannel operation at sample rates up to 192 kHz.  Two FLLs are integrated, providing support for a wide range of system-clock frequencies. The CS47L63 is configured using a control interface which supports I2C and SPI modes of operation. 이 장치는 1.8V 및 1.2V 전원을 사용합니다.

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기능

  • Mono differential output headphone driver
  • Audio playback up to 192 kHz sample rate
  • SNR 99 dB, mic input @ 48 kHz
  • 헤드폰 재생 120dB SNR
  • 총 고조파 왜곡 및 잡음 -93dB(THD+N)
  • 4 analog microphone (DMIC) inputs
  • 최저 32kHz까지 레퍼런스 클럭을 지원하는 유연한 클로킹 방식의 저전력 주파수 고정 루프(FLL)
  • 최대 12 GPIO 핀
  • 저전력 10µA 절전 모드
  • 1.8V 및 1.2V 전원 공급
  • Small WLCSP package, 0.4 mm staggered 61-ball array

파라메트릭 사양

DAC 1
ADC 4
DAC 동적 범위(dB) 108
DAC THD+N(dB) -93
ADC THD+N(dB) -87
샘플레이트(KHz) 0-192
아날로그 전원 공급 장치(V) 1.8
디지털 전원 공급 장치(V) 1.2
패키지 61 WLCSP

소프트웨어 및 도구

CS47L63 Setup

Jun 11, 2021, RevA 1.0.57 : 7.5 Mb

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