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WM8782A - 24-bit 192kHz Stereo ADC

Description

The WM8782A is a high performance, low cost stereo audio ADC designed for recordable media applications.

The device offers stereo line level inputs along with two control input pins (FORMAT, IWL) to allow operation of the audio interface in three industry standard modes.

Features

  • SNR 100dB (‘A’ weighted @ 48kHz).
  • THD -93dB (at.
  • 1dB).
  • Sampling Frequency: 8.
  • 192kHz.
  • Slave Clocking Mode.
  • System Clock (MCLK): 128fs, 192fs, 256fs, 384fs, 512fs, 768fs.
  • Audio Data Interface Modes - 16-24 bit I2S, 16-24 bit Left, 16-24 bit Right Justified.
  • Supply Voltages - Analogue: 2.7 to 5.5V - Digital core: 2.7V to 3.6V.
  • 20-lead SSOP package.
  • Accelerated Lifetime Screened Devices available.

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Full PDF Text Transcription

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WM8782A 24-bit 192 kHz Stereo ADC DESCRIPTION The WM8782A is a high performance, low cost stereo audio ADC designed for recordable media applications. The device offers stereo line level inputs along with two control input pins (FORMAT, IWL) to allow operation of the audio interface in three industry standard modes. An internal op-amp is integrated on the front end of the chip to accommodate analogue input signals greater than 1Vrms. The device also has a high pass filter to remove residual DC offsets. WM8782A offers a Slave mode clocking scheme. A stereo 24-bit multi-bit sigma-delta ADC is used with 128x, 64x or 32x over-sampling, according to sample rate. Digital audio output word lengths from 16-24 bits and sampling rates from 8kHz to 192kHz are supported.
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