WM8782A Datasheet, PDF (1/20 Pages) Cirrus Logic – 24-Bit, 192kHz Stereo ADC

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24-Bit, 192kHz Stereo ADC
WM8782A
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.
The device is a hardware controlled device and is supplied
in a 20-lead SSOP.
The device is available over a functional temperature range of
-40°C to +85°C
BLOCK DIAGRAM
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.
APPLICATIONS
• Recordable DVD Players
• Personal Video Recorders
• STB
• Studio Audio Processing Equipment
• Automotive
WOLFSON MICROELECTRONICS plc
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Production Data, April 2010, Rev 4.8
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