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AD8275BRMZ-RL 数据表(PDF) 1 Page - Analog Devices |
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AD8275BRMZ-RL 数据表(HTML) 1 Page - Analog Devices |
1 / 17 page G = 0.2, Level Translation, 16-Bit ADC Driver AD8275 Rev. A 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 ©2008-2010 Analog Devices, Inc. All rights reserved. FEATURES Translates ±10 V to +4 V Drives 16-bit SAR ADCs Small MSOP package Input overvoltage: +40 V to −35 V (VS = 5 V) Fast settling time: 450 ns to 0.001% Rail-to-rail output Wide supply operation: +3.3 V to +15 V High CMRR: 80 dB Low gain drift: 1 ppm/°C Low offset drift: 2.5 μV/°C APPLICATIONS Level translator ADC driver Instrumentation amplifier building block Automated test equipment PIN CONFIGURATION REF1 1 –IN 2 +IN 3 –VS 4 REF2 8 +VS 7 OUT 6 SENSE 5 AD8275 TOP VIEW (Not to Scale) Figure 1. TYPICAL APPLICATION VREF 4.096V AD8275 7 4 5 6 8 2 50k Ω 0.1µF 50k Ω 20k Ω 20k Ω 33 Ω 10k Ω 3 +IN –IN VIN REF2 REF1 –VS +VS +5V OUT SENSE 0.1µF 2.7nF 10µF 1 AD7685 VDD GND REF IN+ IN– +10V –10V +4.048V +0.048V +2.048V Figure 2. Translating ±10 V to 4.096 V ADC Full Scale GENERAL DESCRIPTION The AD8275 is a G = 0.2 difference amplifier that can be used to translate ±10 V signals to a +4 V level. It solves the problem typically encountered in industrial and instrumentation applic- ations where ±10 V signals must be interfaced to a single-supply 4 V or 5 V ADC. The AD8275 interfaces the two signal levels, simplifying design. The AD8275 has fast settling time of 450 ns and low distortion, making it suitable for driving medium speed successive approx- imation (SAR) ADCs. Its wide input voltage range and rail-to- rail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions. Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required. The AD8275 can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for diff- erential outputs if used with a differential ADC. The AD8275 is available in a space-saving, 8-lead MSOP and is specified for performance over the −40°C to +85°C temperature range. Table 1. Difference Amplifiers by Category Low Distortion High Voltage Single-Supply Current Sense AD8270 AD628 AD8202 AD8273 AD629 AD8203 AD8274 AD8205 AD8275 AD8206 AMP03 AD8216 |
类似零件编号 - AD8275BRMZ-RL |
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类似说明 - AD8275BRMZ-RL |
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