16-Bit, 8-Channel Simultaneous Sampling Data Acquisition System Data Sheet ADAS3023 FEATURES FUNCTIONAL BLOCK DIAGRAM VDDH AVDD DVDD VIO RESET PD Ease of use, 16-bit complete data acquisition system DIFF TO CNV Simultaneous sampling selection of 2, 4, 6, and 8 channels COM IN0 BUSY/ Differential input voltage range: 20.48 V maximum LOGIC/ SDO2 INTERFACE IN1 High impedance 8-channel input: >500 M IN2 CS High input common-mode rejection: 95.0 dB IN3 TRACK SCK IN4 PulSAR AND PGIA User-programmable input ranges IN5 ADC HOLD DIN On-chip 4.096 V reference and buffer IN6 SDO IN7 No latency/pipeline delay (SAR architecture) COM Serial 4-wire 1.8 V to 5 V SPI-/SPORT-compatible interface ADAS3023 BUF REFIN 40-lead LFCSP package (6 mm 6 mm): 40C to +85C REF APPLICATIONS VSSH AGND DGND REF1/REF2 Figure 1. Multichannel data acquisition and system monitoring Process control Power line monitoring Automated test equipment Patient monitoring Spectrum analysis Instrumentation GENERAL DESCRIPTION The ADAS3023 is a complete 16-bit, successive approximation- The ADAS3023 simplifies design challenges by eliminating based, analog-to-digital data acquisition system. This device is signal buffering, level shifting, amplification and attenuation, capable of simultaneously sampling up to 500 kSPS for two common-mode rejection, settling time, or any of the other channels, 250 kSPS for four channels, 167 kSPS for six chan- analog signal conditioning challenges, and allows smaller form nels, and 125 kSPS for eight channels, and manufactured on the factor, faster time to market, and lower costs. Analog Devices, Inc., proprietary iCMOS high voltage industrial The ADAS3023 is available in a 40-lead LFCSP with operation process technology. specified from 40C to +85C. The ADAS3023 integrates eight channels of low leakage track- Table 1. Typical Input Range Selection and-hold design, a programmable gain instrumentation 1 Single-Ended Signals Input Range, V IN amplifier (PGIA) stage with a high common-mode rejection 0 V to 1 V 1.28 V offering four differential input ranges, a precision low drift 0 V to 2.5 V 2.56 V 4.096 V reference and buffer, and a 16-bit charge redistribution 0 V to 5 V 5.12 V PulSAR successive approximation register (SAR) analog-to-digital 0 V to 10 V 10.24 V converter (ADC). The ADAS3023 is factory calibrated and can 1 See Figure 39 and Figure 40 in the Analog Inputs section for more resolve differential input ranges of up to 20.48 V when using information. 15 V supplies. Rev. B 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 20132017 Analog Devices, Inc. All rights reserved. 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. Technical Support www.analog.com 10942-001ADAS3023 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Transfer Functions ..................................................................... 20 Applications ....................................................................................... 1 Typical Application Connection Diagram .............................. 21 Functional Block Diagram .............................................................. 1 Analog Inputs.............................................................................. 21 General Description ......................................................................... 1 Voltage Reference Input/Output .............................................. 22 Revision History ............................................................................... 2 Power Supply ............................................................................... 24 Specifications ..................................................................................... 3 Power Dissipation Modes .......................................................... 25 Timing Specifications .................................................................. 6 Conversion Modes ..................................................................... 25 Timing Diagrams .......................................................................... 8 Digital Interface .............................................................................. 26 Absolute Maximum Ratings ....................................................... 9 Conversion Control ................................................................... 26 Thermal Resistance ...................................................................... 9 RESET and Power-Down (PD) Inputs .................................... 26 ESD Caution .................................................................................. 9 Serial Data Interface ................................................................... 27 Pin Configurations and Function Descriptions ......................... 10 General Timing........................................................................... 28 Typical Performance Characteristics ........................................... 12 Configuration Register .............................................................. 29 Terminology .................................................................................... 17 Packaging and Ordering Information ......................................... 30 Theory of Operation ...................................................................... 19 Outline Dimensions ................................................................... 30 Overview ...................................................................................... 19 Ordering Guide .......................................................................... 30 Operation ..................................................................................... 19 REVISION HISTORY 10/2017Rev. A to Rev. B 2/2014Rev. 0 to Rev. A Changed REFx to REF1/REF2 ..................................... Throughout Changes to Table 2 ............................................................................. 5 Changes to General Description Section ...................................... 1 Changes to Figure 38 ...................................................................... 21 Changes to Table 2 ............................................................................ 3 Changes to Table 3 ....................................................................................... 6 5/2013Revision 0: Initial Version Changes to Figure 5 .......................................................................... 8 Added Thermal Resistance Section and Table 5 Renumbered Sequentially ....................................................................................... 9 Changes to Table 4 ....................................................................................... 9 Changes to Figure 6 Caption and Table 6 Title .......................... 10 Change to Figure 35 ....................................................................... 19 Changes to Theory of Operation Section .................................... 19 Change to Figure 38 ....................................................................... 21 Added Alternate Sequence Section .............................................. 24 Change to Core Supplies Section .................................................. 24 Changes to Figure 46 ...................................................................... 24 Changes to Serial Data Interface Section .................................... 27 Changes to Figure 50 ...................................................................... 28 Changes to Table 12 ........................................................................ 29 Updated Outline Dimensions ....................................................... 30 Changes to Ordering Guide .......................................................... 30 Rev. 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