Micropower, Single- and Dual-Supply, Rail-to-Rail Instrumentation Amplifier Data Sheet AD627 FEATURES FUNCTIONAL BLOCK DIAGRAM Micropower, 85 A maximum supply current AD627 R 1 8 R G G Wide power supply range (+2.2 V to 18 V) IN 2 7 +V Easy to use S Gain set with one external resistor +IN 3 6 OUTPUT Gain range 5 (no resistor) to 1000 V 4 5 REF S Higher performance than discrete designs Rail-to-rail output swing Figure 1. 8-Lead PDIP (N) and SOIC N (R) High accuracy dc performance 100 0.03% typical gain accuracy (G = +5) (AD627A) 90 10 ppm/C typical gain drift (G = +5) 125 V maximum input offset voltage (AD627B dual supply) 80 AD627 200 V maximum input offset voltage (AD627A dual supply) 70 1 V/C maximum input offset voltage drift (AD627B) 60 3 V/C maximum input offset voltage drift (AD627A) 50 10 nA maximum input bias current TRADITIONAL 40 Noise: 38 nV/Hz RTI noise at 1 kHz (G = +100) LOW POWER DISCRETE DESIGN Excellent ac specifications 30 AD627A: 77 dB minimum CMRR (G = +5) 20 AD627B: 83 dB minimum CMRR (G = +5) 10 80 kHz bandwidth (G = +5) 0 135 s settling time to 0.01% (G = +5, 5 V step) 1 10 100 1k 10k FREQUENCY (Hz) Figure 2. CMRR vs. Frequency, 5 VS, Gain = +5 APPLICATIONS 4 mA to 20 mA loop-powered applications Low power medical instrumentationECG, EEG Transducer interfacing Thermocouple amplifiers Industrial process controls Low power data acquisition Portable battery-powered instruments ideal for battery-powered applications. Its rail-to-rail output GENERAL DESCRIPTION stage maximizes dynamic range when operating from low The AD627 is an integrated, micropower instrumentation supply voltages. Dual-supply operation (15 V) and low power amplifier that delivers rail-to-rail output swing on single and consumption make the AD627 ideal for industrial applications, dual (+2.2 V to 18 V) supplies. The AD627 provides excellent including 4 mA to 20 mA loop-powered systems. ac and dc specifications while operating at only 85 A maximum. The AD627 does not compromise performance, unlike other The AD627 offers superior flexibility by allowing the user to set micropower instrumentation amplifiers. Low voltage offset, the gain of the device with a single external resistor while con- offset drift, gain error, and gain drift minimize errors in the forming to the 8-lead industry-standard pinout configuration. system. The AD627 also minimizes errors over frequency by With no external resistor, the AD627 is configured for a gain of 5. providing excellent CMRR over frequency. Because the CMRR With an external resistor, it can be set to a gain of up to 1000. remains high up to 200 Hz, line noise and line harmonics are A wide supply voltage range (+2.2 V to 18 V) and micropower rejected. current consumption make the AD627 a perfect fit for a wide The AD627 provides superior performance, uses less circuit range of applications. Single-supply operation, low power board area, and costs less than micropower discrete designs. consumption, and rail-to-rail output swing make the AD627 Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. CMRR (dB) 00782-001 00782-002IMPORTANT LINKS for the AD627* Last content update 12/13/2013 05:28 pm Newer Alternatives: AD8420 : (8-Lead MSOP) low-cost instrumentation amplifier with 80 micro-Amp supply current and 2.7V to +/-18V operation. SIMILAR PRODUCTS & PARAMETRIC SELECTION TABLES DESIGN TOOLS, MODELS, DRIVERS & SOFTWARE Find Similar Products By Operating Parameters In-Amp Error Calculator Looking for a wide-supply, micropower in amp with a smaller AD627A SPICE Macro-Model footprint and lower cost Consider the AD8420. AD627B SPICE Macro-Model Looking for a single-supply in amp with 40 micro-Amp supply current and 1.8V operation Consider the AD8235 (WLCSP) or the AD8236 8-lead MSOP. DESIGN COLLABORATION COMMUNITY DOCUMENTATION Collaborate Online with the ADI support team and other designers AN-282: Fundamentals of Sampled Data Systems about select ADI products. AN-244: A Users Guide to I.C. Instrumentation Amplifiers Follow us on Twitter: www.twitter.com/ADI News AN-245: Instrumentation Amplifiers Solve Unusual Design Problems Like us on Facebook: www.facebook.com/AnalogDevicesInc AN-671: Reducing RFI Rectification Errors in In-Amp Circuits AN-589: Ways to Optimize the Performance of a Difference Amplifier A Designers Guide to Instrumentation Amplifiers UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series DESIGN SUPPORT MS-2178: Discussion Between CareFusion and Analog Devices: Optimizing Performance and Lowering Power in an EEG Amplifer Submit your support request here: Linear and Data Converters Auto-Zero Amplifiers Embedded Processing and DSP High-performance Adder Uses Instrumentation Amplifiers Telephone our Customer Interaction Centers toll free: Piezoresistive Sensing ICs in Portable Infusion Pumps Americas: 1-800-262-5643 Oscillometric Blood Pressure Measurement Europe: 00800-266-822-82 China: 4006-100-006 Protecting Instrumentation Amplifiers India: 1800-419-0108 Russia: 8-800-555-45-90 The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers Quality and Reliability Input Filter Prevents Instrumentation-amp RF-Rectification Errors Lead(Pb)-Free Data Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return Leading Inside Advertorials: Applying Instrumentation Amplifiers EffectivelyThe Importance of an Input Ground Return SAMPLE & BUY AD627 View Price & Packaging Request Evaluation Board EVALUATION KITS & SYMBOLS & FOOTPRINTS Request Samples Check Inventory & Purchase View the Evaluation Boards and Kits page for documentation and purchasing Find Local Distributors Symbols and Footprints * This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. 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