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

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, ...More

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

Product Description

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

  • 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
Circuits from the Lab

Find more at our Circuits Library.

Products Used in This Circuit:
AD1582, AD7328, AD780, AD797, AD8610, AD8620, ADR381, ADR391, REF192

Circuit Types:  ADC Circuit/Driver
Applications:  Instrumentation; Process Control
Optimized For:  High Performance

Diagrams

AD8620 Diagram
Pin Configuration Diagram for AD8620

Specifications

-3dB Bandwidth 25MHz
Slew Rate 50V/µs
Vos 85µV
Ib 2pA
Input Noise (nV/rtHz) 6nV/rtHz
Vcc-Vee Supply (V) 10 to 27
Iq per Amplifier 3.5mA
# OpAmps per Pkg 2
Operating Temp Range -40 to +125
Packages SOIC

Explore Other Products

Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
AD8620 25MHz 50V/µs 85µV 2pA 6nV/rtHz 2 -40 to +125
AD8610 25MHz 60V/µs 75µV 2pA 6nV/rtHz 1 -40 to +125
AD8616 24MHz 12V/µs 23µV 200fA 6nV/rtHz 2 -40 to +125
AD8652 50MHz 41V/µs 100µV 1pA 5nV/rtHz 2 -40 to +125
AD8028 190MHz 100V/µs 200µV 4µA 4.3nV/rtHz 2 -40 to +125
AD8599 10MHz 16.8V/µs 10µV 25nA 1.15nV/rtHz 2 -40 to +125
ADA4841-2 80MHz 13V/µs 40µV 3µA 2.1nV/rtHz 2 -40 to +125
AD8618 24MHz 12V/µs 23µV 200fA 6nV/rtHz 4 -40 to +125
AD8656 28MHz 11V/µs 50µV 10pA 4nV/rtHz 2 -40 to +125
AD8647 24MHz 11V/µs 600µV 300fA 6nV/rtHz 2 -40 to +125
AD8646 24MHz 11V/µs 600µV 300fA 6nV/rtHz 2 -40 to +125
Pricing, Packaging & Availability

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  • Pre-Release: The model has not been released to general production, but samples may be available.
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  • 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.

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

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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.

*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.

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