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. 该器件可通过 1.8 V 和 1.2 V 电源供电。

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特性

  • Mono differential output headphone driver
  • Audio playback up to 192 kHz sample rate
  • SNR 99 dB, mic input @ 48 kHz
  • 耳机播放信噪比 (SNR) 为 120 dB
  • 总谐波失真加噪声 -93 dB (THD+N)
  • 4 analog microphone (DMIC) inputs
  • 计时灵活,低功耗锁频环路 (FLL) 支持低至 32 kHz 的参考时钟
  • 多达 12 个 GPIO 引脚
  • 10 µA 的低功耗休眠模式
  • 可通过 1.8 V 和 1.2 V 电源供电
  • Small WLCSP package, 0.4 mm staggered 61-ball array

参数规格

数模转换器 (DAC) 1
模数转换器 (ADC) 4
数模转换器 (DAC) 动态范围 (dB) 108
数模转换器 (DAC) THD+N (dB) -93
模数转换器 (ADC) THD+N (dB) -87
采样频率(kHz) 0-192
模拟电源 (V) 1.8
数字电源 (V) 1.2
封装 61 WLCSP

软件和工具

CS47L63 Setup

Jun 11, 2021, RevA 1.0.57 : 7.5 Mb

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