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AD8274: Very Low Distortion, Precision Difference Amplifier Data Sheet (Rev. C)8/14/2008PDF415 kB
Overview
Features and Benefits
- 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
Product 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
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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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)10/3/2018PDF211 K
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AN-1581: High Speed Instrumentation Amplifier Using the AD8271 Difference Amplifier and the ADA4627-1 JFET Input Op Amp (Rev. B)9/2/2018PDF128 K
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A Deeper Look into Difference Amplifiers2/1/2014 Analog Dialogue
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High-performance Adder Uses Instrumentation Amplifiers9/3/2009
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Difference Amplifier Forms Heart of Precision Current Source9/1/2009 Analog Dialogue
Tools & Simulations
SPICE Models
CIR
AD8274 SPICE Macro Model
4.57 K
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD8274ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD8274ARMZ-R7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD8274ARMZ-RL | Material Declaration | Reliability Data | 8-Lead MSOP | |
| AD8274ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD8274ARZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| AD8274ARZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
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Sample & Buy
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