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AD8620:  Low Input Bias Current, Wide BW JFET Precision Dual Op Amp

Product Details


The AD8610 (single) and AD8620 (dual) are very high precision JFET input amplifiers featuring ultralow offset voltage and drift, very low input voltage and current noise, very low input bias current, and wide bandwidth. Unlike many JFET amplifiers, the AD8610 input bias current is low over the entire operating temperature range. The AD8610 is stable with capacitive loads of over 1000 pF in noninverting unity gain; much larger capacitive loads can be driven easily at higher noise gains. The AD8610 swings to within 1.2 V of the supplies even with a 1 k Ω load, maximizing dynamic range even with limited supply voltages. Outputs slew at 50 V/µs in either inverting or noninverting gain configurations, and settle to 0.01% accuracy in less than 600 ns. Combined with the high input impedance, great precision, and very high output drive, theAD8610 is an ideal amplifier for driving high performance A/D inputs and buffering D/A converter outputs.

Applications for the AD8610 and AD8620 include electronic instruments; ATE amplification, buffering, and integrator circuits; CAT/MRI/Ultrasound medical instrumentation; instrumentation quality photodiode amplification; fast precision filters (including PLL filters); and high quality audio.

The AD8610 is fully specified over the extended industrial (-40ºC to +125ºC temperature range. The AD8610 is available in the narrow 8-lead SOIC and the tiny MSOP8 surface-mount packages. The AD8620 is available in the narrow 8-lead SOIC package. MSOP8 packaged devices are available only in tape and reel.

FEATURES and BENEFITS

  • Low Noise 6 nV/√Hz
  • Low Offset Voltage: 100 µV Max
  • Low Input Bias Current 10 pA Max
  • Fast Settling: 600 ns to 0.01%
  • Low Distortion
  • Unity Gain Stable
  • No Phase Reversal
  • Dual-Supply Operation: ±5 V to ±13 V

Pin Configuration Diagram for AD8620

Similar Products

  • Looking for higher slew rates for faster settling times and operation with +/-15V supplies? Consider the ADA4627-1.
  • Looking for a lower power alternative capable of ±15V operation? Consider the ADA4610-2 or ADA4001-2 which also offers rail-to-rail output.

Documentation

Title Content Type File Type
AD8610/AD8620: Precision Very Low Noise Low Input Bias Current Wide Bandwith JFET Op Amp Data Sheet  (Rev F, 05/2008) (pdf, 3864 kB) Data Sheets PDF
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance  (pdf, 199 kB) Application Notes PDF
AN-692: Universal Precision Op Amp Evaluation Board  (pdf, 621 kB) Application Notes PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-106: A Collection of Amp Applications  (pdf, 1094 kB)
Examines Some of the Numerous and Widely Used Applications of the Operational Amplifier
Application Notes PDF
AN-356: User's Guide to Applying and Measuring Operational Amplifier Specifications  (pdf, 538 kB) Application Notes PDF
AN-256: Accurately Testing Op Amp Settling Times  (pdf, 106 kB) Application Notes PDF
CN-0047: Using the AD7328 8-Channel ADC in Applications with Single-Ended Industrial-Level Signals  (pdf, 109 kB) Circuit Note PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8620 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

AD8620 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8620AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $10.27 $8.64 N  Material Info PCN Purchase
AD8620AR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $8.64 N  Material Info PCN/PDN Purchase
AD8620AR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $8.64 N  Material Info PCN Purchase
AD8620ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $8.91 $7.50 Y  Material Info PCN Purchase Sample
AD8620ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $7.50 Y  Material Info PCN Purchase
AD8620ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $7.50 Y  Material Info PCN Purchase
AD8620BR-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $19.25 N  Material Info PCN/PDN Purchase
AD8620BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $19.81 $16.70 Y  Material Info PCN Purchase
AD8620BRZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $16.70 Y  Material Info PCN/PDN Purchase
AD8620BRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $16.70 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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