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ADAU1328 Datasheet(PDF) 1 Page - Analog Devices |
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ADAU1328 Datasheet(HTML) 1 Page - Analog Devices |
1 / 33 page 2 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec Data Sheet ADAU1328 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2006-2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES PLL generated or direct master clock Low EMI design 108 dB DAC/107 dB ADC dynamic range and SNR −94 dB THD + N Single 3.3 V supply Tolerance for 5 V logic inputs Supports 24 bits and 8 kHz to 192 kHz sample rates Differential ADC input Single-ended DAC output Log volume control with autoramp function SPI® controllable for flexibility Software controllable clickless mute Software power-down Right justified, left justified, I2S and TDM modes Master and slave modes up to 16-channel in/out 48-lead LQFP APPLICATIONS Home theater systems Set-top boxes Digital audio effects processors GENERAL DESCRIPTION The ADAU1328 is a high performance, single-chip codec that provides two analog-to-digital converters (ADCs) with differential input and eight digital-to-analog converters (DACs) with single-ended output using the Analog Devices, Inc. patented multibit sigma-delta (Σ-Δ) architecture. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The ADAU1328 operates from 3.3 V digital and analog supplies. The ADAU1328 is available in a 48-lead (single-ended output) LQFP. Other members of this family include a differential DAC output version. The ADAU1328 is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board PLL to derive the master clock from the LR clock or from an external crystal, the ADAU1328 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The digital-to-analog and analog-to-digital converters are designed using the latest ADI continuous time architectures to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions. FUNCTIONAL BLOCK DIAGRAM DEC FILTER 48/96/ 192kHz SERIAL DATA PORT DIGITAL AUDIO INPUT/OUTPUT PRECISION VOLTAGE REFERENCE TIMING MANAGEMENT AND CONTROL (CLOCK AND PLL) CONTROL PORT SPI CONTROL DATA INPUT/OUTPUT 12.488MHz 6.144MHz ADAU1328 ADC ADC DAC DAC DAC DAC DAC DAC DAC DAC DIGITAL FILTER AND VOLUME CONTROL SDATA OUT SDATA IN CLOCKS Figure 1. |
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