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AD8274:  Very Low Distortion, Precision Difference Amplifier

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 ...More

AD8274:  Very Low Distortion, Precision Difference Amplifier

Product 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.

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

RESOURCES & TOOLS

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  • 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
  • Single/Dual Supply: Dual
  • Voltage Supply (Vmax) : +36V
  • Gain Range (min to max): 2
  • Bandwidth G=10 (kHz typ): 10000kHz
  • CMRR (dB): 77dB
  • Temperature Range: -40 to +85
  • Gain Error (%) max: +0.03%
  • Supply Current : 2.6mA
  • Package: MSOP,SOIC
  • Vosi (µV): 700µV

AD8274 Functional Block Diagram

Circuits from the Lab

Find more at our Circuits Library.

Similar Products

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Part# # Channels Gain Range (min to max) Slew Rate Bandwidth G=10 (kHz typ) Rail-Rail Out Rail-Rail In CMRR (dB) Vcc-Vee Common Mode Range (V) Gain Error (%) max Gain temp co. Vosi (µV) VosiTC (µV/deg C) Input Vnoise THD+N (f=1kHz 10Vpp) (dB) Supply Current Price* (1000-4999)
AD628 1 100 0.3V/µs 600 No Yes 75 4.5V to 36V +/- 120 +0.1 5ppm/C 1500 3 300nV/rtHz - 1.6mA $1.78
AD629 1 1 2.1V/µs 500 No Yes 90 5V to 36V +/- 270 +0.03 10ppm/C 500 3 550nV/rtHz - 1mA $2.84
AD8270 2 1.2 30V/µs - Yes Yes 76 5V to 36V -Vs-0.4 to +Vs+0.4 +0.05 10ppm/C 1000 2 38nV/rtHz 110 2.5mA $1.91
AD8271 1 1.2 30V/µs - Yes Yes 80 5V to 36V -Vs-0.4 to +Vs+0.4 +0.02 2ppm/C 600 2 38nV/rtHz 110 2.6mA $1.25
AD8273 2 2 20V/µs - No Yes 77 5V to 36V 3(-Vs)+4.5 to 3(Vs)-4.5 +0.03 2ppm/C 700 3 26nV/rtHz 112 2.5mA $1.67
AD8274 1 2 20V/µs 10000 No Yes 77 5V to 36V 3(-Vs)+4.5 to 3(Vs)-4.5 +0.03 2ppm/C 700 3 26nV/rtHz 112 2.6mA $1.05
AD8275 1 0.2 25V/µs - Yes Yes 86 3.3V to 15V +/-12 +0.024 1ppm/C 500 2.5 40nV/rtHz 106 2.3mA $1.60
AD8277 2 1 1.1V/µs - Yes Yes 86 2V to 36V 2(-Vs)-0.2 to 2(Vs)-3 +0.02 1ppm/C 200 0.5 65nV/rtHz - 0.4mA $1.60
AD8278 1 2 1.4V/µs - Yes Yes 80 2V to 36V 3(-Vs)-0.3 to 3(Vs)-4.5 +0.02 1ppm/C 100 0.3 47nV/rtHz - 0.2mA $0.95
AMP03 1 1 9.5V/µs - No Yes 85 12V to 36V +/- 20 +0.008 - 400 - 90nV/rtHz - 2.5mA $2.81
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* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

Pricing, Packaging & Availability

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Model
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Status
Status indicates the current lifecycle of the product. This can be one of 4 stages:
  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.