18-Bit, 2 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs Data Sheet AD4003/AD4007/AD4011 FEATURES GENERAL DESCRIPTION Easy Drive The AD4003/AD4007/AD4011 are high accuracy, high speed, Greatly reduced input kickback low power, 18-bit, Easy Drive, precision successive approximation Input current reduced to 0.5 A/MSPS register (SAR) analog-to-digital converters (ADCs) that operate Enhanced acquisition phase, 79% of cycle time at 1 MSPS from a single power supply, VDD. The reference voltage, V , is REF First conversion accurate, no latency or pipeline delay applied externally and can be set independent of the supply Input span compression for single-supply operation voltage. The AD4003/AD4007/AD4011 power scales linearly Fast conversion allows low SPI clock rates with throughput. Input overvoltage clamp protection sinks up to 50 mA SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface Easy Drive features reduce both signal chain complexity and power High performance consumption while enabling higher channel density. The reduced Differential analog input range: VREF, VREF from 2.4 V to 5.1 V input current, particularly in high-Z mode, coupled with a long Throughput: 2 MSPS/1 MSPS/500 kSPS options signal acquisition phase, eliminates the need for a dedicated INL: 1.0 LSB (3.8 ppm) maximum ADC driver. Easy Drive broadens the range of companion Guaranteed 18-bit, no missing codes circuitry that is capable of driving these ADCs (see Figure 2). SNR: 100.5 dB at fIN = 1 kHz, VREF = 5 V Input span compression eliminates the need to provide a THD: 123 dB at fIN = 1 kHz, 100 dB at fIN = 100 kHz negative supply to the ADC driver amplifier while preserving SINAD: 89 dB at fIN = 1 MHz (see Figure 17) Oversampled dynamic range access to the full ADC code range. The input overvoltage clamp 103.5 dB for OSR = 2 protects the ADC inputs against overvoltage events, minimizing 130.5 dB for OSR = 1024 disturbances on the reference pin and eliminating the need for Low power external protection diodes. Single 1.8 V supply operation with 1.71 V to 5.5 V logic Fast device throughput up to 2 MSPS allows users to accurately interface capture high frequency signals and to implement oversampling 2.4 mW at 500 kSPS (VDD only) techniques to alleviate the challenges associated with antialias 80 W at 10 kSPS, 16 mW at 2 MSPS (total power) filter designs. Decreased serial peripheral interface (SPI) clock 10-lead packages: 3 mm 3 mm LFCSP, 3 mm 4.90 mm MSOP rate requirements reduce digital input and output power Pin compatible with AD4000/AD4004/AD4008 family consumption, broadens digital host options, and simplifies the Guaranteed operation: 40C to +125C task of sending data across digital isolation. The SPI-compatible APPLICATIONS serial user interface is compatible with 1.8 V, 2.5 V, 3 V, and 5 V Automated test equipment logic by using the separate VIO logic supply. Machine automation 15 Medical equipment HIGH-Z DISABLED, 2MSPS HIGH-Z ENABLED, 2MSPS Battery-powered equipment 12 Precision data acquisition systems 9 Instrumentation and control systems 6 FUNCTIONAL BLOCK DIAGRAM 3 2.4V TO 5.1V 1.8V 10F 0 REF VDD 3 AD4003/ AD4007/ 6 AD4011 VIO V 1.8V TO 5V REF 9 HIGH-Z TURBO V /2 SDI REF MODE MODE 3-WIRE OR IN+ 0 SCK 4-WIRE 12 18-BIT SERIAL SPI INTERFACE SAR SDO INTERFACE (DAISY CHAIN, CS) ADC V REF IN 15 CNV STATUS CLAMP V /2 5 4 3 2 1 012345 REF BITS SPAN 0 COMPRESSION INPUT DIFFERENTIAL VOLTAGE (V) GND Figure 2. Input Current vs. Input Differential Voltage 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 20162021 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 14957-001 INPUT CURRENT (A) 14957-443AD4003/AD4007/AD4011 Data Sheet TABLE OF CONTENTS Features ............................................................................................... 1 Driver Amplifier Choice ........................................................... 23 Applications ........................................................................................ 1 Ease of Drive Features ............................................................... 24 Functional Block Diagram .............................................................. 1 Voltage Reference Input ............................................................ 25 General Description ......................................................................... 1 Power Supply ............................................................................... 26 Revision History ............................................................................... 2 Digital Interface .......................................................................... 26 Specif ications ..................................................................................... 4 Register Read/Write Functionality........................................... 28 Timing Specifications .................................................................. 7 Status Bits .................................................................................... 30 Absolute Maximum Ratings ............................................................ 9 CS Mode, 3-Wire Turbo Mode ................................................. 31 Thermal Resistance ...................................................................... 9 CS Mode, 3-Wire Without Busy Indicator ............................. 32 ESD Caution .................................................................................. 9 CS Mode, 3-Wire with Busy Indicator .................................... 33 Pin Configurations and Function Descriptions ......................... 10 CS Mode, 4-Wire Turbo Mode ................................................. 34 Typical Performance Characteristics ........................................... 11 CS Mode, 4-Wire Without Busy Indicator ............................. 35 Terminology .................................................................................... 17 CS Mode, 4-Wire with Busy Indicator .................................... 36 Theory of Operation ...................................................................... 18 Daisy-Chain Mode ..................................................................... 37 Circuit Information .................................................................... 18 Layout Guidelines....................................................................... 38 Converter Operation .................................................................. 19 Evaluating the AD4003/AD4007/AD4011 Performance ...... 38 Transfer Functions...................................................................... 19 Outline Dimensions ....................................................................... 39 Applications Information .............................................................. 20 Ordering Guide .......................................................................... 40 Typical Application Diagrams .................................................. 20 Analog Inputs .............................................................................. 21 REVISION HISTORY 2/2021Rev. C to Rev. D Changes to Multiplexed Applications Section and High-Z Mode S ection .............................................................................................. 24 Changes to Features Section, Applications Section, and General Changes to Figure 47, Figure 48, Long Acquisition Phase Description Section .......................................................................... 1 Section, and Voltage Reference Input Section ............................ 25 Changes to Specifications Section and Table 1 ............................. 4 Deleted Table 12 and Table 14 Renumbered Sequentially .............. 26 Changes to Timing Specifications Section .................................... 7 Changes to Power Supply Section and Digital Interface Section .... 26 Added Note 1 to Table 2 Renumbered Sequentially ................... 7 Added Configuration Register Details Section and Serial Clock Added Note 1 to Table 3 .................................................................. 8 Frequency Requirements Section ......................................................... 26 Deleted Figure 3 Renumbered Sequentially ................................. 8 Added Table 12 and Table 13 Renumbered Sequentially ................ 27 Changes to Thermal Resistance Section ........................................ 9 Changes to Register Read/Write Functionality Section ................... 28 Changes to Table 7 .......................................................................... 10 Changes to Figure 49 and Figure 50 ..................................................... 29 Changes to Typical Performance Characteristics Section ......... 11 Changed Status Word Section to Status Bits Section ........................ 30 Changes to Terminology Section ................................................. 17 Changes to Status Bits Section, Table 15, and Figure 52 ................... 30 Changes to Circuit Information Section and Table 8 ................ 18 Changes to CS Mode, 3-Wire Turbo Mode Section, Figure 53, and Changes to Typical Application Diagrams Section .................... 20 Changes to Input Overvoltage Clamp Circuit Section .............. 21 Figure 54 Caption ..................................................................................... 31 Change to Differential Input Considerations Section and Changes to CS Mode, 3-Wire Without Busy Indicator Section, Table 10 ............................................................................................ 22 Figure 55, and Figure 56 Caption .......................................................... 32 Changes to Driver Amplifier Choice Section, Single to Changes to CS Mode, 3-Wire with Busy Indicator Section, Differential Driver Section, and High Frequency Input Signals Figure 57, and Figure 58 ......................................................................... 33 Section .............................................................................................. 23 Changes to CS Mode, 4-Wire Turbo Mode Section, Figure 59, and Moved Figure 44 ............................................................................. 23 Figure 60 Caption ..................................................................................... 34 Rev. D Page 2 of 40