WM8781GEDS データシートの表示（PDF） - Cirrus Logic
部品番号
コンポーネント説明
メーカー
WM8781GEDS Datasheet PDF : 21 Pages
| |||
w
24-Bit, 192kHz Stereo ADC
WM8781
DESCRIPTION
The WM8781 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.
WM8781 offers Master or Slave mode clocking schemes.
A control input pin M/S is used to allow Slave mode
operation or Master mode operation. 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.
The device is a hardware controlled device and is supplied
in a 20-lead SSOP package.
BLOCK DIAGRAM
FEATURES
SNR 102dB (‘A’ weighted @ 48kHz)
THD -90dB (at –1dB)
Sampling Frequency: 8 – 192kHz
Master or 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
APPLICATIONS
Recordable DVD Players
Personal Video Recorders
STB
Studio Audio Processing Equipment
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, January 2012, Rev 4.5
Copyright 2012 Wolfson Microelectronics plc
Share Link: 