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AD8675:  36 V Precision, 2.8 nV/√Hz Rail-to-Rail Output Op Amp

Product Details


The AD8675 precision operational amplifier has ultralow offset, drift, and voltage noise combined with very low input bias currents over the full operating temperature range. The AD8675 is a precision, wide bandwidth op amp featuring rail-to-rail output swings and very low noise. Operation is fully specified from ±5 V to ±15 V.

The AD8675 features a rail-to-rail output like that of the OP184, but with wide bandwidth and even lower voltage noise, com-bined with the precision and low power consumption like that of the industry-standard OP07 amplifier. Unlike other low noise, rail-to-rail op amps, the AD8675 has very low input bias current and low input current noise.

With typical offset voltage of only 10 μV, offset drift of 0.2 μV/°C, and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8675 is perfectly suited for applications where large error sources cannot be tolerated. For applications with even lower offset tolerances, the proprietary nulling capability allows a combination of both device and system offset errors up to 3.5 mV (referred to the input) to be compensated externally. Unlike previous circuits, the AD8675 accommodates this adjustment without adversely affecting the offset drift, CMRR, and PSRR of the amplifier. Precision instrumentation, PLL, and other precision filter circuits, position and pressure sensors, medical instrumentation, and strain gage amplifiers benefit greatly from the very low noise, low input bias current, and wide bandwidth. Many systems can take advantage of the low noise, dc precision, and rail-to-rail output swing provided by the AD8675 to maximize SNR and dynamic range.

The smaller packages and low power consumption afforded by the AD8675 allow maximum channel density or minimum board size for space-critical equipment.

The AD8675 is specified for the extended industrial temperature range (−40°C to +125°C). The AD8675 amplifier is available in the tiny 8-lead MSOP, and the popular 8-lead, narrow SOIC, RoHS compliant packages. MSOP packaged devices are only available in tape and reel format.

Applications
  • Precision instrumentation
  • PLL filters
  • Laser diode control loops
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers

FEATURES and BENEFITS

  • Very low voltage noise: 2.8 nV/√Hz
  • Rail-to-rail output swing
  • Low input bias current: 2 nA maximum
  • Very low offset voltage: 75 μV maximum
  • Low input offset drift: 0.6 μV/°C maximum
  • Very high gain: 120 dB
  • Wide bandwidth: 10 MHz typical
  • ±5 V to ±18 V operation

Pin Diagrams

Documentation

Title Content Type File Type
AD8675: 36 V Precision, 2.8 nV/√Hz Rail-to-Rail Output Op Amp Data Sheet (Rev E, 07/2012) (pdf, 360 kB) Data Sheets PDF
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance  (pdf, 199 kB) Application Notes PDF
AN-358: Noise and Operational Amplifier Circuits  (pdf, 593 kB) Application Notes PDF
CN-0318: 16-Bit, Linear, Ultra Stable, Low Noise, Bipolar ±10 V DC Voltage Source  (pdf, 370 kB) Circuit Note PDF
CN-0257: 20-Bit, Linear, Low Noise, Precision, Unipolar +10 V DC Voltage Source  (pdf, 353 kB) Circuit Note PDF
CN-0200: 18-Bit, Linear, Low Noise, Precision Bipolar ±10 V DC Voltage Source  (pdf, 327 kB) Circuit Note PDF
CN0191: 20-Bit, Linear, Low Noise, Precision, Bipolar ±10V DC Voltage Source  (pdf, 178 kB) Circuit Note PDF
CN-0169: How to Achieve High Precision Voltage Level Setting Using the AD5542A/AD5541A 16-Bit Voltage Output DAC  (pdf, 457 kB) Circuit Note PDF
iPolar™ - revolutionary new high-voltage analog manufacturing process technology breathes new life into industrial bipolar devices Technical Articles HTML
Op-Amp Issues--Noise Analog Dialogue HTML
Analog Devices rolls out iPolar signal-conditioning amplifiers
(EDN, 5/17/2005)
Product Reviews HTML
ICs Tackle Industrial Apps With Advanced Trench Technology
(Electronic Design, 6/9/2005)
Product Reviews HTML
RAQs index Rarely Asked Questions HTML
What do I do with the "null pins" on the amplifier if I don't plan to use them? FAQs/RAQs HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8675 SPICE Macro 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.

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Price, packaging, availability

AD8675 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8675ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $1.40 $1.18 Y  Material Info PCN Purchase Sample
AD8675ARMZ-REEL Status: Production 8 ld MSOP 8 Reel, 3000 - $1.18 Y  Material Info PCN Purchase
AD8675ARZ Status: Production 8 ld SOIC 8 Tube, 98 $1.41 $1.18 Y  Material Info PCN Purchase Sample
AD8675ARZ-REEL Status: Production 8 ld SOIC 8 Reel, 2500 - $1.18 Y  Material Info PCN Purchase
AD8675ARZ-REEL7 Status: Production 8 ld SOIC 8 Reel, 1000 - $1.18 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-1 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-1KSZ Status: Production Single KS-5 lead SC70 Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RJZ Status: Production Single RJ-5 lead SOT23 Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RMZ Status: Production Single RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-1RZ Status: Production Single 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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