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AD1837AAS Arkusz danych(PDF) 1 Page - Analog Devices |
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AD1837AAS Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 24 page a AD1837A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2004 Analog Devices, Inc. All rights reserved. REV. A 2 ADC, 8 DAC, 96 kHz, 24-Bit - Codec FEATURES 5 V Stereo Audio System with 3.3 V Tolerant Digital Interface Supports up to 96 kHz Sample Rates 192 kHz Sample Rate Available on 1 DAC Supports 16-, 20-, 24-Bit Word Lengths Multibit - Modulators with Perfect Differential Linearity Restoration for Reduced Idle Tones and Noise Floor Data Directed Scrambling DACs—Least Sensitive to Jitter Single-Ended Outputs ADCs: –95 dB THD + N, 105 dB SNR and Dynamic Range DACs: –92 dB THD + N, 108 dB SNR and Dynamic Range On-Chip Volume Controls per Channel with 1024-Step Linear Scale DAC and ADC Software Controllable Clickless Mutes Digital De-emphasis Processing Supports 256 fS, 512 fS, and 768 fS Master Mode Clocks Power-Down Mode Plus Soft Power-Down Mode Flexible Serial Data Port with Right-Justified, Left- Justified, I2S Compatible, and DSP Serial Port Modes TDM Interface Mode Supports 8 In/8 Out Using a Single SHARC® SPORT 52-Lead MQFP Plastic Package APPLICATIONS DVD Video and Audio Players Home Theater Systems Automotive Audio Systems Audio/Visual Receivers Digital Audio Effects Processors FUNCTIONAL BLOCK DIAGRAM OUTL1 CONTROL PORT CLOCK FILTD FILTR ADCLP ADCLN ADCRP ADCRN DLRCLK DBCLK DSDATA1 DSDATA2 DSDATA3 DSDATA4 MCLK ASDATA ABCLK ALRCLK ODVDD DVDD AVDD AVDD DVDD AGND AGND AGND AGND DGND DGND CIN CLATCH CCLK COUT DIGITAL FILTER PD/RST M/S - ADC VOLUME SERIAL DATA I/O PORT DIGITAL FILTER - DAC VREF OUTR1 VOLUME OUTL2 VOLUME DIGITAL FILTER - DAC OUTR2 VOLUME OUTL3 VOLUME DIGITAL FILTER - DAC OUTR3 VOLUME OUTL4 VOLUME DIGITAL FILTER - DAC OUTR4 VOLUME DIGITAL FILTER - ADC AD1837A GENERAL DESCRIPTION The AD1837A is a high performance single-chip codec featuring four stereo DACs and one stereo ADC. Each DAC comprises a high performance digital interpolation filter, a multibit - modulator featuring Analog Devices’ patented technology, and a continuous-time voltage out analog section. Each DAC has inde- pendent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit S-D modulators and decimation filters. The AD1837A also contains an on-chip reference with a nominal value of 2.25 V. The AD1837A contains a flexible serial interface that allows for glueless connection to a variety of DSP chips, AES/EBU receivers, and sample rate converters. The AD1837A can be configured in left-justified, right-justified, I 2S, or DSP compatible serial modes. Control of the AD1837A is achieved by means of an SPI compat- ible serial port. While the AD1837A can be operated from a single 5 V supply, it also features a separate supply pin for its digital inter- face, which allows the device to be interfaced to other devices using 3.3 V power supplies. The AD1837A is available in a 52-lead MQFP package and is speci- fied for the industrial temperature range of –40ºC to +85ºC. |
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