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ISL267817IUZ Arkusz danych(PDF) 1 Page - Intersil Corporation |
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ISL267817IUZ Arkusz danych(HTML) 1 Page - Intersil Corporation |
1 / 18 page 1 12-Bit Differential Input 200kSPS SAR ADC ISL267817 The ISL267817 is a 12-bit, 200kSPS sampling SAR-type ADC which features excellent linearity over supply and temperature variations, and provides a drop-in compatible alternative to all ADS7817 performance grades. The robust, fully-differential input offers high impedance to minimize errors due to leakage currents, and the specified measurement accuracy is maintained with input signals up to the supply rails. The reference accepts inputs between 0.1V to 2.5V, providing design flexibility in a wide variety of applications. The ISL267817 also features up to 8kV Human Body Model ESD survivability. The serial digital interface is SPI compatible and is easily interfaced to popular FPGAs and microcontrollers. Operating from a 5V supply, power dissipation is 2.15mW at a sampling rate of 200kSPS, and just 25µW between conversions utilizing the Auto Power-Down mode, making the ISL267817 an excellent solution for remote industrial sensors and battery-powered instruments. It is available in the compact, industry-standard 8 Lead SOIC and MSOP packages and is specified for operation over the industrial temperature range (-40°C to +85°C). Features • Drop-In Compatible with ADS7817 (All Performance Grades) • Differential Input • Simple SPI-compatible Serial Digital Interface • Guaranteed No Missing Codes • 200kHz Sampling Rate • +4.75V to +5.25V Supply • Low 2.15mW Operating Power (200kSPS) • Power-down Current between Conversions: 3µA • Excellent Differential Non-Linearity (1.0LSB max) • Low THD: -85dB (typ) • Pb-Free (RoHS Compliant) • Available in SOIC and MSOP Packages Applications • Remote Data Acquisition • Battery Operated Systems • Industrial Process Control • Energy Measurement • Data Acquisition Systems • Pressure Sensors • Flow Controllers FIGURE 1. BLOCK DIAGRAM FIGURE 2. DIFFERENTIAL LINEARITY ERROR vs CODE SERIAL INTERFACE +VCC VREF GND +IN –IN DCLOCK DOUT CS/SHDN SAR LOGIC VREF -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 512 1024 1536 2048 2560 3072 3584 4096 April 19, 2012 FN7877.2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
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