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AD8672:  Precision Low Noise, Low Input Bias Current Dual Op Amp

Product Details


The AD8671/AD8672/AD8674 are very high precision amplifiers featuring very low noise, very low offset voltage and drift, low input bias current, 10 MHz bandwidth, and low power consumption. Outputs are stable with capacitive loads of over 1000 pF. Supply current is less than 3 mA per amplifier at 30 V.

The AD8671/AD8672/AD8674’s combination of ultralow noise, high precision, speed, and stability is unmatched. The MSOP version of the AD8671/AD8672 requires only half the board space of comparable amplifiers.

Applications for these amplifiers include high quality PLL filters, precision filters, medical and analytical instrumentation, precision power supply controls, ATE, data acquisition, and precision controls as well as professional quality audio.

The AD8671/AD8672 are specified over the extended industrial temperature range (−40°C to +125°C), and the AD8674 is specified over the industrial temperature range (−40°C to +85°C).

The AD8671/AD8672 are available in the 8-lead SOIC and 8-lead MSOP packages. The AD8674 is available in 14-lead SOIC and 14-lead TSSOP packages.

Surface-mount devices in MSOP packages are available in tape and reel only.

APPLICATIONS
  • PLL filters
  • Filters for GPS
  • Instrumentation
  • Sensors and controls
  • Professional quality audio

FEATURES and BENEFITS

  • Very low noise:
    2.8 nV/√Hz, 77 nV p-p
  • Wide Bandwidth: 10MHz
  • Low Input Bias Current:
    12 nA max
  • Low Offset Voltage: 75 µV max
  • High open loop gain: 120 dB min
  • Low supply current:
    3 mA typ per amplifier
  • Dual supply operation:
    ±5V to ±15V
  • Unity Gain Stable
  • No Phase Reversal

Pin Configuration Diagram for AD8672

Similar Products

  • Looking for lower noise and lower power with similar speed? Consider the ADA4004-2.
  • Looking for Rail-to-Rail Inputs where higher input bias currents are acceptable? Consider the ADA4084-2.
  • Looking for or lower input bias currents where higher noise is acceptable? Consider the ADA4627-1 for higher speed or the ADA4610-2 for lower power.

Documentation

Title Content Type File Type
AD8671/AD8672/AD8674: Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers Data Sheet (Rev F, 03/2013) (pdf, 459 kB) Data Sheets PDF
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance  (pdf, 199 kB) Application Notes PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-358: Noise and Operational Amplifier Circuits  (pdf, 593 kB) Application Notes PDF
CN-0058: Sample-and-Hold Circuit Using the ADG1211 Switch  (pdf, 130 kB) Circuit Note PDF
Op-Amp Issues--Noise Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8672 SPICE 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.

Product Recommendations & Reference Designs

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Price, packaging, availability

AD8672 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8672AR Status: Last Time Buy 8 ld SOIC 8 Ind Tube, 98 $2.48 $2.08 N  Material Info PCN/PDN Purchase
AD8672AR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $2.08 N  Material Info PCN/PDN Purchase
AD8672AR-REEL7 Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 1000 - $2.08 N  Material Info PCN/PDN Purchase
AD8672ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $2.04 $1.62 Y  Material Info PCN Purchase Sample
AD8672ARMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $1.62 Y  Material Info PCN Purchase
AD8672ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $2.04 $1.62 Y  Material Info PCN Purchase Sample
AD8672ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $1.62 Y  Material Info PCN Purchase
AD8672ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.62 Y  Material Info PCN 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.

EVAL-OPAMP-2 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-2CPZ Status: Production Dual CP-8 lead LFCSP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RMZ Status: Production Dual RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RZ Status: Production Dual R-8 lead SOIC Evaluation Board $20.19 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.

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