OP42

NOT RECOMMENDED FOR NEW DESIGNS

High Speed, Fast Settling Precision Operational Amplifier

Data Sheet (Rev. A) Product Selection Table
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Overview

FAST 
  • Slew Rate: 50 V/µs Min
  • Settling Time (0.01%): 1 µs Max
  • Gain Bandwidth Product: 10 MHz Typ
  • Excellent Radiation Hardness
PRECISE
  • Common Mode Rejection: 88 dB Min
  • Open Loop Gain: 500 V/mV Min
  • Offset Voltage: 750 µV Max
  • Bias Current: 200 pA Max
  • Available in Die Form

The OP-42 is a fast precision JFET-input operational amplifier. Similar in speed to the OP-17, the OP-42 offers a symmetric 58V/µs slew rate and is internally compensated for unity-gain operation. OP-42 speed is achieved with a supply current of less than 6mA. Unity gain stability, a wide full-power bandwidth of 900kHz, and a fast settling-time of 800ns to 0.01% make the OP-42 an ideal output amplifier for fast digital-to-analog converters. Equal attention was given to both speed and precision in the OP-42 design.

Its tight 750µV maximum input offset voltage combined with well-controlled drift of less than 10µV/%C eliminates the need for external nulling in many circuits. The common-mode rejection of the 88dB minimum over a ±11 V input voltage range is exceptional for a high-speed amplifier. High CMR combined with a minimum 500V/mV gain into 10k(ohm) load ensure excellent linearity in both noninverting and inverting gain configurations. The low input bias and offset currents provided by the JFET input stage suit the OP-42 for use in high-speed sample and hold circuits, peak detectors, and log amplifiers. Excellent radiation hardness characteristics make the OP-42 ideal for military and aerospace applications.

The OP-42 conforms to the standard 741 pinout with nulling to V-. The OP-42 upgrades the performance of circuits using the AD544, AD611, AD711, and LF400 by direct replacement. In circuits without nulling, the OP-42 offers an upgrade for designs using the OP-16, OP-17, LT1022, LT1056, and HA2510.

OP42
High Speed, Fast Settling Precision Operational Amplifier
OP42-pcl
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Documentation

Data Sheet 2

User Guide 1

Application Note 7

Frequently Asked Question 1

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Software Resources

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Tools & Simulations

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

VRMS/dBm/dBu/dBV calculators

A utility to convert between standard units of power measurement and signal strength.

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Power Dissipation vs Die Temp

This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.

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

OP42 SPICE Macro Models 5

Evaluation Kits

EVAL-OPAMP-1

EVAL-OPAMP-1 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-1KSZ (Single 5-Lead SC70) KS-5
  • EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
  • EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
  • EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8
EVAL-OPAMP-1
EVAL-OPAMP-1 Evaluation Board

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