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AD1852JRSZRL Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD1852JRSZRL Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 20 page Stereo, 24-Bit, 192 kHz, Multibit, Sigma-Delta DAC AD1852 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 www.analog.com Fax: 781.461.3113 ©2000–2009 Analog Devices, Inc. All rights reserved. FEATURES 5 V stereo audio DAC system Accepts 16-bit/18-bit/20-bit/24-bit data Supports 24 bits, 192 kHz sample rate Accepts a wide range of sample rates including 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and 192 kHz Multibit Σ-Δ modulator with perfect differential linearity restoration for reduced idle tones and noise floor Data-directed scrambling DAC—least sensitive to jitter Differential output for optimum performance 117 dB signal-to-noise (not muted) at 48 kHz sample rate (A-weighted mono) 114 dB signal-to-noise (not muted) at 48 kHz sample rate (A-weighted stereo) 117 dB dynamic range (not muted) at 48 kHz sample rate (A-weighted mono) 114 dB dynamic range (not muted) at 48 kHz sample rate (A-weighted stereo) −105 dB THD+N (mono application circuit) −102 dB THD+N (stereo) 115 dB stop-band attenuation On-chip clickless volume control Hardware and software controllable clickless mute Serial (SPI) control for: serial mode, number of bits, sample rate, volume, mute, de-emp Digital de-emphasis processing for 32 kHz, 44.1 kHz, 48 kHz sample rates Clock autodivide circuit supports five master-clock frequencies Flexible serial data port with right-justified, left-justified, I2S-compatible and DSP serial port modes 28-Lead SSOP plastic package APPLICATIONS High end DVDs, CDs, home theater systems, automotive, audio systems, sampling musical keyboards, digital mixing consoles, and digital audio effects processors GENERAL DESCRIPTION The AD1852 is a complete, high performance, single-chip, stereo digital, audio playback system. It is comprised of a multibit, Σ-Δ modulator, digital interpolation filters, and analog output drive circuitry. Other features include an on-chip, stereo attenuator and mute, programmed through an SPI-compatible serial control port. The AD1852 is fully compatible with all known DVD formats, including 192 kHz, as well as 96 kHz sample frequencies and 24 bits. It is also backwards compatible by supporting 50 μs/15 μs digital de-emphasis intended for Red Book compact discs, as well as de-emphasis at 32 kHz and 48 kHz sample rate. The AD1852 has a very simple, but very flexible, serial data input port that allows for glueless interconnection to a variety of ADCs, DSP chips, AES/EBU receivers, and sample rate converters. The AD1852 can be configured in left-justified, I2S, right-justified, or DSP serial port compatible modes. It can support 16, 18, 20, and 24 bits in all modes. The AD1852 accepts serial audio data in MSB first, twos-complement format. The AD1852 operates from a single 5 V power supply. It is fabricated on a single, monolithic integrated circuit and is housed in a 28-lead SSOP for operation over the 0°C to 70°C temperature range. FUNCTIONAL BLOCK DIAGRAM SERIAL DATA INTERFACE 8 × fS INTERPOLATOR SERIAL CONTROL INTERFACE AUTO-CLOCK DIVIDE CIRCUIT VOLUME MUTE CONTROL DATA INPUT 3 2 DIGITAL SUPPLY CLOCK IN ANALOG OUTPUTS 2 2 ZERO FLAG ANALOG SUPPLY DE-EMPHASIS MUTE 2 SERIAL MODE 16-/18-/20-/24-BIT DIGITAL DATA INPUT AD1852 MULTIBIT SIGMA- DELTA MODULATOR ATTEN/ MUTE VOLTAGE REFERENCE DAC 8 × fS INTERPOLATOR MULTIBIT SIGMA- DELTA MODULATOR ATTEN/ MUTE DAC RESET Figure 1. |
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