w
24 Bit Stereo ADC
DESCRIPTION
The WM8738 is a high performance stereo audio ADC
designed for consumer applications.
Stereo line-level audio inputs are provided, along with a
control input pin to allow operation of the audio interface in
either one of two industry standard modes. The device also
has a selectable digital high pass filter to remove residual
DC offsets.
Stereo 24-bit multi-bit sigma delta ADCs are provided, along
with oversampling digital interpolation filters. 24-bit digital
audio output word lengths and sampling rates from 32kHz
to 96kHz are supported.
The device is available in a small 14-pin SOIC package.
WM8738
FEATURES
•
•
•
•
•
•
•
Audio Performance
-
90 dB SNR (‘A’ weighted @ 48kHz)
3.0 – 5.5V Analogue Supply Operation
3.0 – 3.6V Digital Supply Operation
ADC Sampling Frequency: 32kHz – 96kHz
Selectable ADC High Pass Filter
Selectable Audio Data Interface Modes
-
I
2
S or Left Justified
14-pin SOIC Package
APPLICATIONS
•
•
•
CD and Minidisc Recorders
DVD Players
General Purpose Audio Conversion
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, November 2004, Rev 4.3
Copyright
2004 Wolfson Microelectronics plc