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WM8718SEDS/R Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8718SEDS/R Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 27 page  w WM8718 24 Bit Differential Stereo DAC with Volume Control WOLFSON MICROELECTRONICS plc www.wolfsonmicro.com Production Data, March 2004, Rev 4.1 Copyright 2004 Wolfson Microelectronics plc DESCRIPTION The WM8718 is a high performance differential stereo DAC designed for audio applications such as DVD, home theatre systems and digital TV. The WM8718 supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8718 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and differential stereo DAC in a small 20-pin SSOP package. The WM8718 includes a digitally controllable mute, an attenuate function and zero flag output for each channel. The 3-wire serial control port provides access to a wide range of features including on-chip mute, attenuation and phase reversal. The WM8718 is an ideal device to interface to AC-3 , DTS , and MPEG audio decoders for surround sound applications, or for use in DVD players including those supporting DVD-A. FEATURES • 24 bit Stereo DAC • Fully Differential Voltage Outputs • Audio Performance - 111dB SNR (‘A’ weighted @ 48kHz) DAC - -100dB THD • DAC Sampling Frequency: 8kHz - 192kHz • 3 Wire Serial Control Interface • Programmable Audio Data Interface Modes - I 2S, 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 • Independent Zero Flag Outputs • 3.0V - 5.5V Supply Operation • 20-pin SSOP Package APPLICATIONS • CD, DVD, and DVD-Audio Players • Home theatre systems • Professional mixing desks BLOCK DIAGRAM AUDIO INTERFACE ATT/ MUTE CONTROL INTERFACE BCKIN VOUTLN VOUTRN SIGMA DELTA MODULATOR LRCIN DIN ATT/ MUTE SIGMA DELTA MODULATOR DIGITAL FILTERS VMID DAC DAC VOUTRP VOUTLP ZEROFL ZEROFR W WM8718 |
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