AD8274

PRODUCTION

AD8274

Very Low Distortion, Precision Difference Amplifier

PRODUCTION

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Part Models 6

1ku List Price Starting From $1.24

Features

Very low distortion
0.00025% THD + N ( 20 kHz)
0.0015% THD + N (100 kHz)
Drives 600 Ω loads
Excellent gain accuracy
0.03% maximum gain error
2 ppm/°C maximum gain drift
Gains of ½ or 2
AC specifications
20 V/µs minimum slew rate
800 ns to 0.01% settling time
High accuracy dc performance
83 dB minimum CMRR
700 µV maximum offset voltage
8-lead SOIC and MSOP packages
Supply current: 2.6 mA maximum
Supply range: ±2.5 V to ±18 V

Additional Details

The AD8274 is a difference amplifier that delivers excellent ac and dc performance. Built on Analog Devices, Inc., proprietary iPolar^® process and laser-trimmed resistors, AD8274 achieves a breakthrough in distortion vs. current consumption and has excellent gain drift, gain accuracy, and CMRR.

Distortion in the audio band is an extremely low 0.00025% (112 dB) at a gain of ½ and 0.00035% (109 dB) at a gain of 2 while driving a 600 Ω load.

With supply voltages up to ±18 V (+36 V single supply), the AD8274 is well suited for measuring large industrial signals. Additionally, the part’s resistor divider architecture allows it to measure voltages beyond the supplies.

With no external components, the AD8274 can be configured as a G = ½ or G = 2 difference amplifier. For single-ended applications that need high gain stability or low distortion performance, the AD8274 can also be configured for several gains ranging from −2 to +3.

The excellent distortion and dc performance of the AD8274, along with its high slew rate and bandwidth, make it an excellent ADC driver. Because of the part’s high output drive, it also makes a very good cable driver.

The AD8274 only requires 2.6 mA maximum supply current. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant. For the dual version, see the AD8273 data sheet.

Applications

ADC driver
High performance audio
Instrumentation amplifier building blocks
Level translators
Automatic test equipment
Sine/cosine encoders

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 6

1ku List Price Starting From $1.24

Documentation

Technical Documents 4

AD8274: Very Low Distortion, Precision Difference Amplifier Data Sheet (Rev.C) 08/14/2008

AN-1579: High Voltage, High Precision Current Sensing with Output Level Shifting Using the AD8210 Current Sense Amplifier and the AD8274 Difference Amplifier (Rev.A) 10/03/2018

AN-1581: High Speed Instrumentation Amplifier Using the AD8271 Difference Amplifier and the ADA4627-1 JFET Input Op Amp (Rev.B) 09/02/2018

High-performance Adder Uses Instrumentation Amplifiers 09/03/2009

Reference Materials 4

CN-0122: High Speed Instrumentation Amplifier Using the AD8271 Difference Amplifier and the ADA4627-1 JFET Input Op Amp 11/12/2010

A Designer's Guide to Instrumentation Amplifiers, 3rd Edition, 2006 01/02/2006

Difference Amplifier Forms Heart of Precision Current Source 09/01/2009

A Deeper Look into Difference Amplifiers 02/01/2014

Design Resources 6

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD8274ARMZ	8-Lead MSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8274ARMZ-R7	8-Lead MSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8274ARMZ-RL	8-Lead MSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8274ARZ	8-Lead SOIC	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8274ARZ-R7	8-Lead SOIC	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8274ARZ-RL	8-Lead SOIC	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys