FEATURES
6-Channel DAC 106dB SNR (’A’ weighted @ 48kHz) DAC 96dB THD
DAC Sampling Frequency: 8kHz - 192kHz 3-Wire Serial Control Interface I2S, Left, Right Justified or 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 - 5.5V Supply Operation 28-Pin SSOP Package Exceeds Dolby Class A Performance Requirements Pin Compatible with WM8736
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DESCRIPTION
WM8746 is a high performance 6-channel DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8746 supports data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8746 can convert up to 6 channels at sample rates from 8 to 192kHz. Additionally WM8746 supports 2 channels at 192kHz and 4 channels at 96kHz simultaneously.
The WM8746 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and 6 DACs in a small 28-pin SSOP package. The WM8746 also includes a digitally controllable mute and attenuator function on each channel.
The WM8746 supports a variety of connection schemes for audio DAC control. The serial control interface 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 WM8736, (apart from RSTB pin which is typically unused).
The WM8746 is an ideal device to interface to AC-3™, DTS™, and MPEG audio decoders for surround sound applications, or for use in
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