8-Channel DAC with PLL and Single-Ended Outputs, 192 kHz, 24 Bits Data Sheet AD1934 FEATURES GENERAL DESCRIPTION PLL generated or direct master clock The AD1934 is a high performance, single chip that provides Low EMI design eight digital-to-analog converters (DACs) with single-ended 108 dB DAC dynamic range and SNR output using the Analog Devices, Inc., patented multibit sigma- 94 dB THD + N delta (-) architecture. An SPI port is included, allowing a Single 3.3 V supply microcontroller to adjust volume and many other parameters. Tolerance for 5 V logic inputs The AD1934 operates from 3.3 V digital and analog supplies. Supports 24 bits and 8 kHz to 192 kHz sample rates The AD1934 is available in a 48-lead (single-ended output) Single-ended DAC output LQFP. Other members of this family include a differential DAC Log volume control with autoramp function output version. SPI controllable for flexibility The AD1934 is designed for low EMI. This consideration is Software-controllable clickless mute apparent in both the system and circuit design architectures. Software power-down 2 By using the on-board PLL to derive the master clock from the Right-justified, left-justified, I S, and TDM modes LR clock or from an external crystal, the AD1934 eliminates the Master and slave modes up to 16-channel in/out need for a separate high frequency master clock and can also be 48-lead LQFP used with a suppressed bit clock. The DACs are designed using Qualified for automotive applications the latest Analog Devices continuous time architectures to further minimize EMI. By using 3.3 V supplies, power consumption is APPLICATIONS minimized, further reducing emissions. Automotive audio systems Home theater systems Set-top boxes Digital audio effects processors FUNCTIONAL BLOCK DIAGRAM AD1934 DAC DAC DAC DIGITAL DAC FILTER ANALOG AND AUDIO VOLUME OUTPUTS DAC CONTROL CLOCKS DAC SERIAL TIMING MANAGEMENT DIGITAL AUDIO AND CONTROL DATA INPUT/OUTPUT PORT SDATAIN (CLOCK AND PLL) DAC DAC 6.144MHz PRECISION CONTROL PORT VOLTAGE SPI REFERENCE CONTROL DATA INPUT/OUTPUT Figure 1. Rev. D Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 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Technical Support www.analog.com 06106-001AD1934 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Digital-to-Analog Converters (DACs) .................................... 13 Applications ....................................................................................... 1 Clock Signals ............................................................................... 13 General Description ......................................................................... 1 Reset and Power-Down ............................................................. 13 Functional Block Diagram .............................................................. 1 Serial Control Port ..................................................................... 14 Revision History ............................................................................... 2 Power Supply and Voltage Reference ....................................... 15 Specif icat ions ..................................................................................... 4 Serial Data PortsData Format ............................................... 15 Test Conditions ............................................................................. 4 Time-Division Multiplexed (TDM) Modes ............................ 15 Analog Performance Specifications ........................................... 4 Daisy-Chain Mode ..................................................................... 17 Crystal Oscillator Specifications................................................. 5 Control Registers ............................................................................ 21 Digital Input/Output Specifications........................................... 5 Def initions ................................................................................... 21 Power Supply Specifications........................................................ 6 PLL and Clock Control Registers ............................................. 21 Digital Filters ................................................................................. 7 DAC Control Registers .............................................................. 22 Timing Specifications .................................................................. 7 Auxiliary TDM Port Control Registers ................................... 24 Absolute Maximum Ratings ............................................................ 9 Additional Modes ....................................................................... 24 Thermal Resistance ...................................................................... 9 Application Circuits ....................................................................... 26 ESD Caution .................................................................................. 9 Outline Dimensions ....................................................................... 27 Pin Configuration and Function Descriptions ........................... 10 Ordering Guide .......................................................................... 27 Typical Performance Characteristics ........................................... 12 Automotive Products ................................................................. 27 Theory of Operation ...................................................................... 13 REVISION HISTORY 2/13Rev. C to Rev. D 9/09Rev. 0 to Rev. A Changes to tCLH Comments, Table 7 ............................................... 6 Change to Title ................................................................................... 1 Changes to Serial Control Port Section ....................................... 13 Change to Table 11 ......................................................................... 13 Change to Power Supply and Voltage Reference Section .......... 14 7/11Rev. B to Rev. C Updated Outline Dimensions ....................................................... 26 Changes to Ordering Guide .......................................................... 26 2 Deleted References to I C ............................................. Throughout Changes to Figure 2 and Table 10, DSDATAx/AUXDATA1 Pin 8/07Revision 0: Initial Version Descriptions ...................................................................................... 9 1/11Rev. A to Rev. B Added Automotive Information .................................. Throughout Change to Table 2, Introductory Text ............................................ 4 Change to Table 4, Introductory Text ............................................ 4 Change to Table 7, Introductory Text ............................................ 6 Changes to Ordering Guide .......................................................... 26 Rev. D Page 2 of 29