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WM8728 データシート(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8728 データシート(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 28 page  WM8728 24-bit, 192kHz Stereo DAC with Volume Control and DSD Support Product Preview, Rev 1.2, April 2001 WOLFSON MICROELECTRONICS LTD Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK Tel: +44 (0) 131 667 9386 Fax: +44 (0) 131 667 5176 Email: sales@wolfson.co.uk www.wolfsonmicro.com Product Preview data sheets contain specifications for products in the formative phase of development. These products may be changed or discontinued without notice. 2001 Wolfson Microelectronics Ltd . DESCRIPTION The WM8728 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8728 supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. Alternatively the WM8728 can operate in DSD compatible mode where a 64x bitstream is input for each channel. The WM8728 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a small 20-pin SSOP package. The WM8728 also includes a digitally controllable mute and attenuate function for each channel. The WM8728 supports a variety of connection schemes for audio DAC control. The 2 or 3-wire 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 (DSD operation is only possible in hardware mode). The WM8728 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 with 24 bit PCM or single bit DSD operation • Audio Performance - 106dB SNR (‘A’ weighted @ 48kHz) DAC - -97dB THD • DAC Sampling Frequency: 8kHz - 192kHz • 2 or 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 • 20-pin 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 SERIAL INTERFACE MUTE/ ATTEN CONTROL INTERFACE BCKIN SIGMA DELTA MODULATOR LRCIN DIN MUTE/ ATTEN SIGMA DELTA MODULATOR DIGITAL FILTERS MCLK DVDD AVDD MUTEB SDIDEM SCKDSD LATI2S MODE CSBIWL ZERO VOUTL VOUTR VMID AGND DGND LOW PASS FILTER LOW PASS FILTER RIGHT DAC LEFT DAC MUX MUX PCM/DSD WM8728 VREFP VREFN |
同様の部品番号 - WM8728 |
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同様の説明 - WM8728 |
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