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 型号:WM8741
规格书下载
 厂家:Cirrus Logic
 年份:14+
 封装:
 数量:
 价格:请联系我们
 备注:
详细介绍:

High Performance Stereo DAC

The WM8741 is a very high performance stereo DAC designed for audio applications such as professional recording systems, A/V receivers and high specification CD, DVD and home theatre systems. The device supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8741 also supports DSD bit-stream data format, in both direct DSD and PCM-converted DSD modes.

The WM8741 includes fine resolution volume and soft mute control, digital de-emphasis and a range of advanced digital filter responses, followed by a digital interpolation filter, multi-bit sigma delta modulator and stereo DAC. Cirrus Logic’s patented architecture optimises the linearity of the DAC and provides maximum insensitivity to clock jitter.

The digital filters include several selectable roll-off and performance characteristics. The user can select between standard sharp or slow roll-off responses. In addition, the WM8741 includes a selection of advanced digital filter characteristics including non-half band filters and minimum phase filters. This flexibility provides a range of benefits, such as significantly reduced pre-ringing and minimal group delay. The internal digital filters can also be by-passed and the WM8741 used with an external digital filter.

The WM8741 supports two connection schemes for audio DAC control. The 2/3 wire serial control interface provides access to all features. A range of features can also be accessed by hardware control interface.

The WM8741 is available in a convenient 28-SSOP package, and is pin compatible with the WM8740.

  • Advanced Ultra High Performance Multi-bit delta-sigma Architecture
    • 128dB SNR (‘A’-weighted mono @ 48kHz)
    • 125dB SNR (‘A’-weighted stereo @ 48kHz)
    • 123dB SNR (non-weighted stereo @ 48kHz)
    • -100dB THD @ 48kHz
    • Differential analog voltage outputs
    • High tolerance to clock jitter
  • PCM Mode
    • Sampling frequency: 32kHz to 192kHz
    • Input data word length support: 16 to 32-bit
    • Supports all standard audio interface formats
    • Selectable advanced digital filter responses
    • Includes linear/minimum phase and range of tailored characteristics
    • Enables low pre-ringing, minimal latency
    • Optional interface to industry standard external filters
    • Digital volume control in 0.125dB steps with soft ramp and soft mute
    • Anti-clipping mode to prevent distortion even with input signals recorded up to 0dB
    • Selectable de-emphasis support
    • Zero Flag output
  • DSD Mode
    • DSD bit-stream support for SACD applications
    • Support for normal or phase modulated bit-streams
    • Direct or PCM converted DSD paths (DSD Plus)
    • DSD mute
  • Hardware or software control modes:
    • 2 and 3 wire serial control interface support
  • Pin compatible with WM8740
  • 4.5V to 5.5V analog, 3.15V to 3.6V digital supply operation
  • 28-lead SSOP Package

 


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