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AD8476ARMZ-R7 数据表(PDF) 1 Page - Analog Devices |
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AD8476ARMZ-R7 数据表(HTML) 1 Page - Analog Devices |
1 / 25 page Low Power, Unity Gain, Fully Differential Amplifier and ADC Driver Data Sheet AD8476 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011–2012 Analog Devices, Inc. All rights reserved. FEATURES Very low power 330 μA supply current Extremely low harmonic distortion −126 HD2 at 10 kHz −128 HD3 at 10 kHz Fully differential or single-ended inputs/outputs Differential output designed to drive precision ADCs Drives switched capacitor and Σ-Δ ADCs Rail-to-rail outputs VOCM pin adjusts output common mode Robust overvoltage up to 18 V beyond supplies High performance Suitable for driving 16-bit converter up to 250 kSPS 39 nV/√Hz output noise 1 ppm/°C gain drift maximum 200 μV maximum output offset 10 V/μs slew rate 6 MHz bandwidth Single supply: 3 V to 18 V Dual supplies: ±1.5 V to ±9 V APPLICATIONS ADC driver Differential instrumentation amplifier building block Single-ended-to-differential converter Battery-powered instruments FUNCTIONAL BLOCK DIAGRAM 10kΩ 10kΩ 10kΩ 10kΩ NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. AD8476 Figure 1. 8-Lead MSOP 12 11 10 1 3 4 NC –OUT +OUT 9 VOCM INP INN 2 INP INN 10kΩ 10kΩ 10kΩ 10kΩ AD8476 NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. Figure 2. 16-Lead LFCSP GENERAL DESCRIPTION The AD8476 is a very low power, fully differential precision amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, common-mode level shifting, low temperature drift, and rail-to-rail outputs for maximum dynamic range. The AD8476 also provides overvoltage protection from large industrial input voltages up to ±23 V while operating on a dual 5 V supply. Power dissipation on a single 5 V supply is only 1.5 mW. The AD8476 works well with SAR, Σ-Δ, and pipeline converters. The high current output stage of the part allows it to drive the switched capacitor front-end circuits of many ADCs with minimal error. Unlike many differential drivers on the market, the AD8476 is a high precision amplifier. With 200 µV maximum output offset, 39 nV/√Hz noise, and −102 dB THD + N at 10 kHz, the AD8476 pairs well with low power, high accuracy converters. Considering its low power consumption and high precision, the slew-enhanced AD8476 has excellent speed, settling to 16-bit precision for 250 kSPS acquisition times. The AD8476 is available in space-saving 16-lead, 3 mm × 3 mm LFCSP and 8-lead MSOP packages. It is fully specified over the −40°C to +125°C temperature range. |
类似零件编号 - AD8476ARMZ-R7 |
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类似说明 - AD8476ARMZ-R7 |
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