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WM8740

Features: • 120dB SNR ('A' weighted mono @48kHz), THD+N: -104dB@ FS• 117dB SNR ('A' weighted stereo @48kHz), THD+N: -104dB@ FS• Sampling frequency: 8kHz to 192kHz• Selectable digital filter roll-off• Optional interface to industry standard external filters• Diff...

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SeekIC No. : 004546187 Detail

WM8740: Features: • 120dB SNR ('A' weighted mono @48kHz), THD+N: -104dB@ FS• 117dB SNR ('A' weighted stereo @48kHz), THD+N: -104dB@ FS• Sampling frequency: 8kHz to 192kHz• Selectable...

WM8740 Data Sheet

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Part Number:
WM8740
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/20

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Product Details

Description



Features:

• 120dB SNR ('A' weighted mono @48kHz), THD+N: -104dB@ FS
• 117dB SNR ('A' weighted stereo @48kHz), THD+N: -104dB@ FS
• Sampling frequency: 8kHz to 192kHz
• Selectable digital filter roll-off
• Optional interface to industry standard external filters
• Differential mono mode needing no glue logic
• Input data word: 16 to 24-bit
• Hardware or SPI compatible serial port control modes:
• Hardware mode: mute, de-emphasis, audio format control
• Serial mode: mute, de-emphasis, attenuation (256 steps), phase reversal
• Fully differential voltage outputs


Application

• CD, DVD audio
• Home theatre systems
• Professional audio systems


Pinout

Connection Diagram


Specifications

CONDITION MIN MAX
Supply voltage -0.3V +7.0V
Reference input   VDD + 0.3V
Operating temperature range, TA -25°C +85°C
Storage temperature -65°C +150°C
Package body temperature (soldering, 10 seconds)   +240°C
Package body temperature (soldering, 2 minutes)   +183°C



Description

The WM8740 is a very high performance stereo DACdesigned for audio applications such as CD, DVD, hometheatre systems, set top boxes and digital TV. The WM8740supports data input word lengths from 16 to 24-bits andsampling rates up to 192kHz. The WM8740 consists of aserial interface port, digital interpolation filter, multi-bit sigmadelta modulator and stereo DAC in a small 28-pin SSOPpackage. The WM8740 also includes a digitally controllablemute and attenuator function on each channel.

The internal digital filter has two selectable roll-offcharacteristics. A sharp or slow roll-off can be selecteddependent on application requirements. Additionally, theinternal digital filter can be by-passed and the WM8740used with an external digital filter.

The WM8740 supports two connection schemes for audioDAC control. The SPI-compatible serial control portprovides access to a wide range of features including onchipmute, attenuation and phase reversal. A hardwarecontrollable interface is also available.




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