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WM8742GEDS/RV 数据表(PDF) 1 Page - Cirrus Logic |
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WM8742GEDS/RV 数据表(HTML) 1 Page - Cirrus Logic |
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1 / 66 page  24-bit 192 kHz DAC with Advanced Digital Filtering http://www.cirrus.com Copyright Cirrus Logic, Inc., 2009–2020 (All Rights Reserved) Rev 4.4 JAN 2020 WM8742 DESCRIPTION The WM8742 is a very high performance stereo DAC designed for audio applications such as professional recording systems, A/V receivers and high specification CD, DVD and home theatre systems. The device supports PCM data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8742 also supports DSD bit- stream data format, in both direct DSD and PCM-converted DSD modes. The WM8742 includes fine resolution volume and soft mute control, digital de-emphasis and a range of advanced digital filter responses, followed by a digital interpolation filter, multi-bit sigma delta modulator and stereo DAC. The architecture optimises the linearity of the DAC and provides maximum insensitivity to clock jitter. The digital filters include several selectable roll-off and performance characteristics. The user can select between standard sharp or slow roll-off responses. In addition, the WM8742 includes a selection of advanced digital filter characteristics including non-half band filters and minimum phase filters. This flexibility provides a range of benefits, such as significantly reduced pre-ringing and minimal group delay. The internal digital filters can also be by-passed and the WM8742 used with an external digital filter. The WM8742 supports two connection schemes for audio DAC control. The 2/3 wire serial control interface provides access to all features. A range of features can also be accessed by hardware control interface. The WM8742 is available in a convenient 28-SSOP package, and is pin compatible with the WM8740 and WM8741. FEATURES Advanced Ultra High Performance Multi-bit Sigma-Delta Architecture 126dB SNR (‘A’-weighted mono @ 48kHz) 123dB SNR (‘A’-weighted stereo @ 48kHz) 121dB SNR (non-weighted stereo @ 48kHz) -100dB THD @ 48kHz Differential analogue voltage outputs High tolerance to clock jitter PCM Mode Sampling frequency: 32kHz to 192kHz Input data word length support: 16 to 32-bit Supports all standard audio interface formats Selectable advanced digital filter responses Includes linear/minimum phase and range of tailored characteristics Enables low pre-ringing, minimal latency Optional interface to industry standard external filters Digital volume control in 0.125dB steps with soft ramp and soft mute Anti-clipping mode to prevent distortion even with input signals recorded up to 0dB Selectable de-emphasis support Zero Flag output DSD Mode DSD bit-stream support for SACD applications Support for normal or phase modulated bit-streams Direct or PCM converted DSD paths (DSD Plus) DSD mute Hardware or software control modes: 2 and 3 wire serial control interface support Pin compatible with WM8740 and WM8741 4.5V to 5.5V analogue, 3.15V to 3.6V digital supply operation 28-lead SSOP Package APPLICATIONS Professional audio systems CD, DVD, SACD audio Home theatre systems A/V receivers |
类似零件编号 - WM8742GEDS/RV |
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类似说明 - WM8742GEDS/RV |
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