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AD627:  Micropower, Single and Dual Supply R/R Instrumentation Amplifier

Product Details


Newer Alternatives:
    AD8420 : (8-Lead MSOP) low-cost instrumentation amplifier with 80µA supply current and 2.7V to ±18V operation.

The AD627 is an integrated, micropower instrumentation amplifier that delivers rail-to-rail output swing on single and dual (+2.2 V to ±18 V) supplies. The AD627 provides excellent ac and dc specifications while operating at only 85 μA maximum.

The AD627 offers superior flexibility by allowing the user to set the gain of the device with a single external resistor while con-forming to the 8-lead industry-standard pinout configuration. With no external resistor, the AD627 is configured for a gain of 5. With an external resistor, it can be set to a gain of up to 1000.

A wide supply voltage range (+2.2 V to ±18 V) and micropower current consumption make the AD627 a perfect fit for a wide range of applications. Single-supply operation, low power consumption, and rail-to-rail output swing make the AD627 ideal for battery-powered applications. Its rail-to-rail output stage maximizes dynamic range when operating from low supply voltages. Dual-supply operation (±15 V) and low power consumption make the AD627 ideal for industrial applications, including 4 to 20 mA loop-powered systems.

The AD627 does not compromise performance, unlike other micropower instrumentation amplifiers. Low voltage offset, offset drift, gain error, and gain drift minimize errors in the system. The AD627 also minimizes errors over frequency by providing excellent CMRR over frequency. Because the CMRR remains high up to 200 Hz, line noise and line harmonics are rejected.

The AD627 provides superior performance, uses less circuit board area, and costs less than micropower discrete designs.

Applications

  • 4 mA to 20 mA loop-powered applications
  • Low power medical instrumentation—ECG, EEG
  • Transducer interfacing
  • Thermocouple amplifiers
  • Industrial process controls
  • Low power data acquisition
  • Portable battery-powered instruments

FEATURES and BENEFITS

  • Micropower, 85 μA maximum supply current
  • Wide power supply range (+2.2 V to ±18 V)
  • Easy to use
    Gain set with one external resistor
    Gain range 5 (no resistor) to 1000
  • Higher performance than discrete designs
  • Rail-to-rail output swing
  • High accuracy dc performance
    0.03% typical gain accuracy (G = +5) (AD627A)
    10 ppm/°C typical gain drift (G = +5)
    125 μV maximum input offset voltage (AD627B dual supply)
    200 μV maximum input offset voltage (AD627A dual supply)
  • 1 μV/°C maximum input offset voltage drift (AD627B)
    3 μV/°C maximum input offset voltage drift (AD627A)
  • Noise: 38 nV/√Hz RTI noise @ 1 kHz (G = +100)
  • Excellent ac specifications
    AD627A: 77 dB minimum CMRR (G = +5)
    AD627B: 83 dB minimum CMRR (G = +5)
    80 kHz bandwidth (G = +5)
    135 μs settling time to 0.01% (G = +5, 5 V step)

Pin Configuration Diagram for AD627

Similar Products

Looking for a wide-supply, micropower in amp with a smaller footprint and lower cost? Consider the AD8420.

Looking for a single-supply in amp with 40µA supply current and 1.8V operation? Consider the AD8235 (WLCSP) or the AD8236 8-lead MSOP.

Documentation

Title Content Type File Type
AD627: Micropower, Single and Dual Supply Rail-to-Rail Instrumentation Amplifier Data Sheet (Rev E, 12/2013) (pdf, 1145 kB) Data Sheets PDF
AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
AN-244: A User's Guide to I.C. Instrumentation Amplifiers  (pdf, 522 kB) Application Notes PDF
AN-245: Instrumentation Amplifiers Solve Unusual Design Problems  (pdf, 543 kB)
Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Other Applications as Well.
Application Notes PDF
AN-671: Reducing RFI Rectification Errors in In-Amp Circuits  (pdf, 208 kB) Application Notes PDF
AN-589: Ways to Optimize the Performance of a Difference Amplifier  (pdf, 115 kB)
This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution cost/performance competitive with monolithic instrument amplifiers.
Application Notes PDF
A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series  (pdf, 604 kB) User Guides PDF
MS-2178: Discussion Between CareFusion and Analog Devices: Optimizing Performance and Lowering Power in an EEG Amplifer  (pdf, 147 kB) Technical Articles PDF
Auto-Zero Amplifiers  (doc, 75 kB)
A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
Technical Articles DOC
High-performance Adder Uses Instrumentation Amplifiers
Make an adder circuit using instrumentation amplifiers to increase input impedance.
(EDN, 9/3/2009)
Technical Articles HTML
Piezoresistive Sensing ICs in Portable Infusion Pumps Technical Articles HTML
Oscillometric Blood Pressure Measurement Technical Articles HTML
Protecting Instrumentation Amplifiers  (pdf, 474 kB)
... All data acquisition board designs have to contend with ESD, EMI, and overvoltages. Can one solution protect the circuitry against all three hazards?
(First published in the April 2000 issue of Sensors Magazine)
Technical Articles PDF
Input Filter Prevents Instrumentation-amp RF-Rectification Errors
by Charles Kitchin, Lew Counts, and Moshe Gerstenhaber, Analog Devices, Inc. (EDN, 11/13/2003)
Technical Articles HTML
The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers  (pdf, 582 kB) Technical Articles PDF
Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return  (pdf, 508 kB) Technical Documentation PDF
Leading Inside Advertorials: Applying Instrumentation Amplifiers Effectively–The Importance of an Input Ground Return  (pdf, 121 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
In-Amp Error Calculator
These tools will help estimate error contributions in your instrumentation amplifier circuit. It uses input parameters such as temperature, gain, voltage input, and source impedance to determine the errors that can contribute to your overall design.
Design Calculators HTML
AD627A SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD627 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD627ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $3.23 $2.74 Y  Material Info PCN Purchase
AD627AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.49 $2.95 N  Material Info PDN Purchase
AD627AR-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.95 N  Material Info Notify Me Purchase
AD627AR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.95 N  Material Info PDN Purchase
AD627ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.08 $2.61 Y  Material Info Notify Me Purchase
AD627ARZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.61 Y  Material Info Notify Me Purchase
AD627ARZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.61 Y  Material Info Notify Me Purchase
AD627BNZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $4.52 $3.83 Y  Material Info PCN Purchase
AD627BR Status: Last Time Buy 8 ld SOIC 8 Ind Tube, 98 $4.86 $4.13 N  Material Info PDN Purchase
AD627BR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $4.13 N  Material Info PDN Purchase
AD627BR-REEL7 Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 1000 - $4.13 N  Material Info PDN Purchase
AD627BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.30 $3.65 Y  Material Info Notify Me Purchase
AD627BRZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $3.65 Y  Material Info Notify Me Purchase
AD627BRZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $3.65 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD62x, AD822x, AD842x Series InAmp Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-INAMP-62RZ Status: Production AD620/621/AD622/623/627/AD8223 SOIC Eval Board $40.23 Yes -
EVAL-INAMP-ICF-RMZ Status: Production AD8420/AD8237 MSOP Eval Board $34.58 Yes -
EVAL-INAMP-82RMZ Status: Production AD8220/8221/8226/8227/8228/8236/8421/8422 MSOP Eval Board $34.49 Yes -
EVAL-INAMP-82RZ Status: Production AD8221/8226/8227/8228/8229/8421/8422/8428/8429 SOIC Eval Board $34.49 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

Check Inventory & Purchase

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