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AD8227BRZ-RL1 Folha de dados(PDF) 1 Page - Analog Devices |
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AD8227BRZ-RL1 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 25 page Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier AD8227 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2009 Analog Devices, Inc. All rights reserved. TOP VIEW (Not to Scale) FEATURES Gain set with 1 external resistor Gain range: 5 to 1000 Input voltage goes below ground Inputs protected beyond supplies Very wide power supply range Single supply: 2.2 V to 36 V Dual supply: ±1.5 V to ±18 V Bandwidth (G = 5): 250 kHz CMRR (G = 5): 100 dB minimum (B Grade) Input noise: 24 nV/√Hz Typical supply current: 350 μA Specified temperature: −40°C to +125°C 8-lead SOIC and MSOP packages APPLICATIONS Industrial process controls Bridge amplifiers Medical instrumentation Portable data acquisition Multichannel systems PIN CONFIGURATION –IN 1 RG 2 RG 3 +IN 4 +VS 8 VOUT 7 REF 6 –VS 5 AD8227 Figure 1. Table 1. Instrumentation Amplifiers by Category1 General Purpose Zero Drift Military Grade Low Power High Speed PGA AD8220 AD8231 AD620 AD627 AD8250 AD8221 AD8290 AD621 AD623 AD8251 AD8222 AD8293 AD524 AD8223 AD8253 AD8224 AD8553 AD526 AD8226 AD8228 AD8556 AD624 AD8227 AD8295 AD8557 1 See www.analog.com for the latest selection of instrumentation amplifiers. GENERAL DESCRIPTION The AD8227 is a low cost, wide supply range instrumentation amplifier that requires only one external resistor to set any gain between 5 and 1000. The AD8227 is designed to work with a variety of signal voltages. A wide input range and rail-to-rail output allow the signal to make full use of the supply rails. Because the input range can also go below the negative supply, small signals near ground can be amplified without requiring dual supplies. The AD8227 operates on supplies ranging from ±1.5 V to ±18 V (2.2 V to 36 V single supply). The robust AD8227 inputs are designed to connect to real- world sensors. In addition to its wide operating range, the AD8227 can handle voltages beyond the rails. For example, with a ±5 V supply, the part is guaranteed to withstand ±35 V at the input with no damage. Minimum as well as maximum input bias currents are specified to facilitate open wire detection. The AD8227 is ideal for multichannel, space-constrained applications. With its MSOP package and 125°C temperature rating, the AD8227 thrives in tightly packed, zero airflow designs. The AD8227 is available in 8-pin MSOP and SOIC packages. It is fully specified for −40°C to +125°C operation. For a similar instrumentation amplifier with a gain range of 1 to 1000, see the AD8226. |
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