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ISL267452IHZ-T データシート(PDF) 1 Page - Intersil Corporation |
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ISL267452IHZ-T データシート(HTML) 1 Page - Intersil Corporation |
1 / 16 page 1 12-Bit, 555kSPS SAR ADC ISL267452 The ISL267452 is a 12-bit, 555kSPS sampling SAR-type ADC featuring excellent linearity over supply and temperature variations, and is drop-in compatible with the AD7452. 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 from 0.1V to 2.2V for 3V operation and 0.1V to 3.5V for 5V operation, which provides design flexibility in a wide variety of applications. The ISL267452 also features up to 8kV Human Body Model ESD survivability. The serial digital interface is SPI compatible and is easily interfaced to all popular FPGAs and microcontrollers. Power dissipation is 7mW at a sampling rate of 555kSPS, and just 5µW between conversions utilizing Auto Power-Down mode (with a 5V supply), making the ISL267452 an excellent solution for remote industrial sensors and battery-powered instruments. The ISL267452 is available in an 8 LD SOT-23 package, and is specified for operation over the Industrial temperature range (-40°C to +85°C). Features • Drop-in Compatible with AD7452 • Differential Input (Span = 2VREF) • Simple SPI-compatible Serial Digital Interface • Guaranteed No Missing Codes • 555kHz Sampling Rate • 3V or 5V Operation •Low Operating Current - 1.25mA at 555kSPS with 3V Supplies - 1.70mA at 555kSPS with 5V Supplies • Power-down Current between Conversions: 1µA • Excellent Differential Non-Linearity • Low THD: -83dB (typ) • Pb-Free (RoHS Compliant) • Available in SOT-23 Package 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 VDD VREF GND VIN+ VIN – SCLK SDATA CS SAR LOGIC VREF -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 1024 2048 3072 4096 CODE July 26, 2012 FN8255.0 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. 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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同様の説明 - ISL267452IHZ-T |
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