LT1114

PRODUCTION

Dual/Quad Low Power Precision, Picoamp Input Op Amps

Data Sheet Product Selection Table
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Overview

  • Offset Voltage – Prime Grade: 60µV Max
  • Offset Voltage – Low Cost Grade
    (Including Surface Mount Dual/Quad): 75µV Max
  • Offset Voltage Drift: 0.5µV/°C Max
  • Input Bias Current: 250pA Max
  • 0.1Hz to 10Hz Noise: 0.3µVP-P, 2.2pAP-P
  • Supply Current per Amplifier: 400µA Max
  • CMRR: 120dB Min
  • Voltage Gain: 1 Million Min
  • Guaranteed Specs with ±1.0V Supplies
  • Guaranteed Matching Specifications
  • SO-8 Package – Standard Pinout
  • LT1114 in Narrow Surface Mount Package

The LT1112 dual and LT1114 quad op amps achieve a new standard in combining low cost and outstanding precision specifications.

The performance of the selected prime grades matches or exceeds competitive devices. In the design of the LT1112/LT1114 however, particular emphasis has been placed on optimizing performance in the low cost plastic and SO packages. For example, the 75µV maximum offset voltage in these low cost packages is the lowest on any dual or quad non-chopper op amp.

The LT1112/LT1114 also provide a full set of matching specifications, facilitating their use in such matching dependent applications as two and three op amp instrumentation amplifiers.

Another set of specifications is furnished at ±1V supplies. This, combined with the low 320µA supply current per amplifier, allows the LT1112/LT1114 to be powered by two nearly discharged AA cells.

Applications

  • Picoampere/Microvolt Instrumentation
  • Two and Three Op Amp Instrumentation Amplifers
  • Thermocouple and Bridge Amplifiers
  • Low Frequency Active Filters
  • Photo Current Amplifiers
  • Battery-Powered Systems
LT1114
Dual/Quad Low Power Precision, Picoamp Input Op Amps
Dual Output, Buffered Reference (On Single 3V Supply) Distribution of Input Offset Voltage (In All Packages) Product Package 1 Product Package 2 Product Package 3 Product Package 4
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Design Note 2

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LT1114

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.

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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.

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