Details, datasheet, quote on part number: AD4020BRMZ
PartAD4020BRMZ
Category
TitleIC ADC 20BIT 1MSPS DIFF PULSAR
Description
CompanyAnalog Devices
DatasheetDownload AD4020BRMZ datasheet
  
AD4020BRMZ photo

 

Features, Applications
FEATURES

Throughput: 1.8 MSPS maximum INL: ±3.1 ppm maximum Guaranteed 20-bit no missing codes Low power at 1.8 MSPS (VDD only) at 10 kSPS, at 1.8 MSPS (total) SNR: 100.5 dB typical at 1 kHz, 99 dB typical at 100 kHz THD: -123 dB typical at 1 kHz, -100 dB typical at 100 kHz Ease of use features reduce system power and complexity Input overvoltage clamp circuit Reduced nonlinear input charge kickback High-Z mode Long acquisition phase Input span compression Fast conversion time allows low SPI clock rates SPI-programmable modes, read/write capability, status word Differential analog input range: ±VREF V to VREF with VREF from 5.1 V Single 1.8 V supply operation with 5.5 V logic interface SAR architecture: no latency/pipeline delay Valid first accurate conversion Guaranteed operation: to +125°C Serial interface: SPI/QSPI/MICROWIRE/DSP compatible Ability to daisy-chain multiple ADCs and busy indicator 10-lead packages: 3 mm LFCSP, 4.90 mm MSOP

The is a low noise, low power, high speed, 20-bit, 1.8 MSPS precision successive approximation register (SAR) analog-to-digital converter (ADC). It incorporates ease of use features that lower the signal chain power, reduce signal chain complexity, and enable higher channel density. The high-Z mode, coupled with a long acquisition phase, eliminates the need for a dedicated high power, high speed ADC driver, thus broadening the range of low power precision amplifiers that can drive this ADC directly, while still achieving optimum performance. The input span compression feature enables the ADC driver amplifier and the ADC to operate off common supply rails without the need for a negative supply while preserving the full ADC code range. The low serial peripheral interface (SPI) clock rate requirement reduces the digital input/output power consumption, broadens processor options, and simplifies the task of sending data across digital isolation. Operating from 1.8 V supply, the AD4020 has a ±VREF fully differential input range with VREF ranging from 5.1 V. The AD4020 consumes only at 1.8 MSPS with a minimum SCK rate of 71 MHz in turbo mode and achieves ±3.1 ppm integral nonlinearity (INL), guaranteed no missing codes at 20 bits with 100.5 dB typical signal-to-noise ratio (SNR). The reference voltage is applied externally and can be set independently of the supply voltage. The SPI-compatible versatile serial interface features seven different modes including the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus, and provides an optional busy indicator. The AD4020 is compatible with 3 V, and 5 V logic, using the separate VIO supply. The AD4020 is available a 10-lead MSOP a 10-lead LFCSP with operation specified from to +125°C. The device is pin compatible with the 18-bit, 2 MSPS AD4003.

APPLICATIONS

Automatic test equipment Machine automation Medical equipment Battery-powered equipment Precision data acquisition systems

5V 10µF REF VREF /2 0 VREF /2 0 HIGH-Z MODE IN+ 20-BIT SAR ADC IN­ SPAN CLAMP COMPRESSION GND 1.8V VDD VIO TO 5V

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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

AD4020 Material Declaration PCN-PDN Information Quality And Reliability Symbols and Footprints

Data Sheet 20-Bit, 1.8 MSPS, Precision SAR, Differential ADC Data Sheet User Guides UG-1042: Evaluation Board for the AD4000 Series 16-/18Bit Precision SAR ADCs

Submit a technical question or find your regional support number.

This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.

Features.............................................................................................. 1 Applications....................................................................................... 1 General Description......................................................................... 1 Functional Block Diagram.............................................................. 1 Revision History............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications.................................................................. 6 Absolute Maximum Ratings............................................................ 8 Thermal Resistance...................................................................... 8 ESD Caution.................................................................................. 8 Pin Configurations and Function Descriptions........................... 9 Typical Performance Characteristics........................................... 10 Terminology.................................................................................... 14 Theory of Operation...................................................................... 15 Circuit Information.................................................................... 15 Converter Operation.................................................................. 15 Transfer Functions...................................................................... 16 Applications Information.............................................................. 17 Typical Application Diagrams.................................................. 17

Analog Inputs............................................................................. 19 Driver Amplifier Choice........................................................... 20 Ease of Drive Features............................................................... 22 Voltage Reference Input............................................................ 23 Power Supply............................................................................... 24 Digital Interface.......................................................................... 24 Register Read/Write Functionality........................................... 25 Status Word................................................................................. 27 CS Mode, 3-Wire Turbo Mode................................................. 28 CS Mode, 3-Wire Without the Busy Indicator....................... 29 CS Mode, 3-Wire with the Busy Indicator.............................. 30 CS Mode, 4-Wire Turbo Mode................................................. 31 CS Mode, 4-Wire Without the Busy Indicator........................... 32 CS Mode, 4-Wire with the Busy Indicator.............................. 33 Daisy-Chain Mode..................................................................... 34 Layout Guidelines....................................................................... 35 Evaluating the AD4020 Performance...................................... 35 Outline Dimensions....................................................................... 36 Ordering Guide.......................................................................... 36

7/2017-- Rev. 0 to Rev. A Change to Integral Nonlinearity Error (INL) Parameter, Table 7/2017--Revision 0: Initial Version


 

Some Part number from the same manufacture Analog Devices
1B21 ISOlated, Loop-powered Voltage-to-current Converter
1B21AN
1B22 Programmable, ISOlated Voltage-to-current Converter
1B31 Wide Bandwidth Strain Gage Signal Conditioner
1B31AN
1B31S
1B31SD
1B32 Bridge Transducer Signal Conditioner
1B41 ISOlated RTD Signal Conditioner
1B41AN
1B41B
1B41BN
1B51 ISOlated Mv/thermocouple Signal Conditioner
1B51AN
1B51B
1B51BN
2101-HARDWARE DSP Development Tools For The ADSP-2101
21020-HARDWARE Development Tools For The Analog Devices ADSP-21020 DSP
21061-HARDWARE DSP Development Tools For The ADSP-21061 Sharc(r) DSP
21065-HARDWARE DSP Development Tools For The ADSP-21065L Sharc DSP
21160-HARDWARE Development Tools For The ADSP-21160 DSP
 
0-C     D-L     M-R     S-Z