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WM8706SEDS/R Scheda tecnica(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8706SEDS/R Scheda tecnica(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 26 page  w WM8706 24-bit, 192kHz Stereo DAC with Volume Control WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, July 2005, Rev 4.1 Copyright 2005 Wolfson Microelectronics plc 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-lead 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 (‘A’ weighted @ 48kHz) DAC - -97dB THD • DAC Sampling Frequency: 8kHz – 192kHz • 3-Wire Serial Control Interface or Hardware Control • 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 • 3.0V – 5.5V Supply Operation • 28-Lead SSOP Package • Exceeds Dolby Class A Performance Requirements APPLICATIONS • DVD-Audio and DVD ‘Universal’ Players • Home theatre systems • Digital TV • Digital broadcast receivers BLOCK DIAGRAM BCKIN SERIAL INTERFACE MUTE/ ATTEN CONTROL INTERFACE VOUTL VOUTR SIGMA DELTA MODULATOR LRCIN DIN MUTE/ ATTEN SIGMA DELTA MODULATOR DIGITAL FILTERS XTI DVDD AVDD AGND DGND MUTEB MDDM0 MCDM1 MLIIS MODE CSBIWO ZERO LOW PASS FILTER LOW PASS FILTER VMID RIGHT DAC LEFT DAC VREFN VREFP WM8706 w |
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