AD8642

PRODUCTION

Low Power, Rail-to-Rail Output, Precision Dual JFET Op Amp

Data Sheet (Rev. F) Product Selection Table
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Part Details

  • Low Supply Current: 250 µA max
  • Very Low Input Bias Current: 1 pA max
  • Low Offset Voltage: 750 µV max
  • Single-supply Operation: 5 V to 26 V
  • Dual-supply Operation: ±2.5 V to ±13 V
  • Rail-to-rail Output
  • Unity Gain Stable
  • No Phase Reversal
AD8642
Low Power, Rail-to-Rail Output, Precision Dual JFET Op Amp
AD8642 Functional Block Diagram
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Documentation

Data Sheet 1

Technical Articles 2

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Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • AD8642

SPICE Model 1

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

Signal Chain Designer

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

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Product Details

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
  • EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
  • EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8
EVAL-OPAMP-2
EVAL-OPAMP-2 Evaluation Board
EVAL-OPAMP-2 EVAL-OPAMP-2 EVAL-OPAMP-2

Latest Discussions

2 Years Ago
Boosting AD8642 output current
2 Years Ago
New Interceptor Setup for Amplifiers
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