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Difference Amplifier. AD8274 Datasheet







AD8274 Amplifier. Datasheet pdf. Equivalent






Part

AD8274

Description

Precision Difference Amplifier

Manufacture

Analog Devices

Datasheet
Download AD8274 Datasheet


Analog Devices AD8274

AD8274; FEATURES Very low distortion 0.00025% TH D + N (20 kHz) 0.0015% THD + N (100 kHz ) Drives 600 Ω loads Excellent gain ac curacy 0.03% maximum gain error 2 ppm/ C maximum gain drift Gain of ½ or 2 A C 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-l ead SOIC and MSOP packa.


Analog Devices AD8274

ges Supply current: 2.6 mA maximum Suppl y range: ±2.5 V to ±18 V APPLICATIONS ADC driver High performance audio Inst rumentation amplifier building blocks L evel translators Automatic test equipme nt Sine/cosine encoders GENERAL DESCRIP TION The AD8274 is a difference amplifi er that delivers excellent ac and dc pe rformance. Built on Analog Devices, Inc ., proprietary iPola r® process and laser-trimmed resistors, AD8274 achieves a breakthrough in dist ortion vs. current consumption and has excellent gain drift, gain accuracy, an d CMRR. Distortion in the audio band is an extremely low 0.00025% (112 dB) at a gain of ½ and 0 .



Part

AD8274

Description

Precision Difference Amplifier

Manufacture

Analog Devices

Datasheet
Download AD8274 Datasheet




 AD8274
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
Gain 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
APPLICATIONS
ADC driver
High performance audio
Instrumentation amplifier building blocks
Level translators
Automatic test equipment
Sine/cosine encoders
GENERAL DESCRIPTION
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.
Very Low Distortion,
Precision Difference Amplifier
AD8274
FUNCTIONAL BLOCK DIAGRAM
+VS
7
12k
2
6k
5
6
12k
3
6k
1
4
–VS
Figure 1.
Table 1. Difference Amplifiers by Category
Low
Distortion
AD8270
AD8273
AD8274
AMP03
High
Voltage
AD628
AD629
Single-Supply
Unidirectional
AD8202
AD8203
Single-Supply
Bidirectional
AD8205
AD8206
AD8216
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.
Rev. C
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
rights of third parties that may result from its use. Specifications subject to change without notice. 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 ©2008–2011 Analog Devices, Inc. All rights reserved.





 AD8274
AD8274* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
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Documentation
Data Sheet
• AD8274: Very Low Distortion, Precision Difference
Amplifier Data Sheet
Technical Books
• A Designer's Guide to Instrumentation Amplifiers, 3rd
Edition, 2006
Tools and Simulations
• AD8274 SPICE Macro Model
Reference Designs
• CN0116
• CN0122
Reference Materials
Technical Articles
• High-performance Adder Uses Instrumentation Amplifiers
Design Resources
• AD8274 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
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