DESCRIPTION
The WM8706 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8706 supports data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8706 can implement 2 channels at 192kHz for high-end DVD-Audio. The WM8706 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a small 28-pin SSOP package. The WM8706 also includes a digitally controllable mute and attenuate function on each channel.
The WM8706 supports a variety of connection schemes for audio DAC control. The MPU serial port provides access to a wide range of features including on-chip mute, attenuation and phase reversal. A hardware controllable interface is also available. It is pin-compatible with the WM8716 provided the oscillator circuit on WM8716 is not required in the application.
The WM8706 is an ideal device to interface to AC-3, DTS, and MPEG audio decoders for surround sound applications, or for use in DVD players supporting DVD-A.
FEATURES
⢠Stereo DAC
⢠Audio Performance
- 106dB SNR (âAâ weighted @ 48kHz) DAC
- -97dB THD
⢠DAC Sampling Frequency: 8kHz â 192kHz
⢠3-Wire Serial Control Interface or Hardware Control
⢠Programmable Audio Data Interface Modes
- I2S, Left, Right Justified, DSP
- 16/20/24/32 bit Word Lengths
⢠Independent Digital Volume Control on Each Channel with
127.5dB Range in 0.5dB Steps
⢠3.0V â 5.5V Supply Operation
⢠28-Pin SSOP Package
⢠Exceeds Dolby Class A Performance Requirements
APPLICATIONS
⢠DVD-Audio and DVD âUniversalâ Players
⢠Home theatre systems
⢠Digital TV
⢠Digital broadcast receivers
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