LT1490A
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LT1490A

Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 18
1ku List Price Starting From $2.15
Features
  • Low Input Offset Voltage: 500µV Max
  • Output Swings to 10mV Max from V
  • Rail-to-Rail Input and Output
  • Micropower: 50µA/Amplifier Max
  • Over-The-Top® Input Common Mode Range Extends 44V Above V, Independent of V+
  • Specified on 3V, 5V and ±15V Supplies
  • High Output Current: 20mA
  • Output Drives 10,000pF with Output Compensation
  • Reverse Battery Protection to 18V
  • No Supply Sequencing Problems
  • High Voltage Gain: 1500V/mV
  • High CMRR: 98dB
  • No Phase Reversal
  • Gain Bandwidth Product: 200kHz
  • Tiny 3mm × 3mm × 0.8mm DFN Package
Additional Details
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The LT1490A/LT1491A are dual and quad op amps with a low input offset voltage of 500µV max. The LT1490A/LT1491A operate on all single and split supplies with a total voltage of 2V to 44V, drawing only 40µA of quiescent current per amplifier. These amplifiers are reverse supply protected; they draw virtually no current for reverse supply up to 18V. The input range of the LT1490A/LT1491A includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1490A/LT1491A can drive heavy loads; their rail-to-rail outputs drive 20mA. The LT1490A/LT1491A are unity-gain stable and drive all capacitive loads up to 10,000pF when optional 0.22µF and 150Ω compensation is used.

The LT1490A/LT1491A have a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and common mode even when operating on a 3V supply. Built-in resistors protect the inputs for faults below the negative supply up to 15V. There is no phase reversal of the output for inputs 15V below V or 44V above V, independent of V+.

The LT1490A dual op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications LT1490A is available in a 3mm × 3mm × 0.8mm, dual fine pitch leadless package (DFN). The quad LT1491A is available in the 14-pin SO, PDIP and 5mm × 3mm × 0.8mm DFN packages.

Applications

  • Battery- or Solar-Powered Systems
    • Portable Instrumentation
    • Sensor Conditioning
  • Supply Current Sensing
  • Battery Monitoring
  • Micropower Active Filters
  • 4mA to 20mA Transmitters
Part Models 18
1ku List Price Starting From $2.15

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT1490ACMS8#PBF

PRODUCTION

LT1490ACMS8#TRPBF

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LT1490AHMS8#PBF

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LT1490AHMS8#TRPBF

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Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT1490ACMS8#PBF

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LT1490ACMS8#TRPBF

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LT1490AHMS8#PBF

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LT1490AHMS8#TRPBF

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LT1490AIMS8#TRPBF

PRODUCTION

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1490ACN8#PBF

PRODUCTION

LT1490AIN8#PBF

PRODUCTION

Oct 12, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1490ACS8#PBF

PRODUCTION

LT1490ACS8#TRPBF

PRODUCTION

LT1490AHS8#PBF

PRODUCTION

LT1490AHS8#TRPBF

PRODUCTION

LT1490AIS8#PBF

PRODUCTION

LT1490AIS8#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1490ACS8#PBF

PRODUCTION

LT1490ACS8#TRPBF

PRODUCTION

LT1490AHS8#PBF

PRODUCTION

LT1490AHS8#TRPBF

PRODUCTION

LT1490AIS8#PBF

PRODUCTION

LT1490AIS8#TRPBF

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Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT1490ACMS8#PBF

PRODUCTION

LT1490ACMS8#TRPBF

PRODUCTION

LT1490AHMS8#PBF

PRODUCTION

LT1490AHMS8#TRPBF

PRODUCTION

LT1490AIMS8#PBF

PRODUCTION

LT1490AIMS8#TRPBF

PRODUCTION

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT1490ACMS8#PBF

PRODUCTION

LT1490ACMS8#TRPBF

PRODUCTION

LT1490AHMS8#PBF

PRODUCTION

LT1490AHMS8#TRPBF

PRODUCTION

LT1490AIMS8#PBF

PRODUCTION

LT1490AIMS8#TRPBF

PRODUCTION

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1490ACN8#PBF

PRODUCTION

LT1490AIN8#PBF

PRODUCTION

Oct 12, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1490ACS8#PBF

PRODUCTION

LT1490ACS8#TRPBF

PRODUCTION

LT1490AHS8#PBF

PRODUCTION

LT1490AHS8#TRPBF

PRODUCTION

LT1490AIS8#PBF

PRODUCTION

LT1490AIS8#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1490ACS8#PBF

PRODUCTION

LT1490ACS8#TRPBF

PRODUCTION

LT1490AHS8#PBF

PRODUCTION

LT1490AHS8#TRPBF

PRODUCTION

LT1490AIS8#PBF

PRODUCTION

LT1490AIS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

DC591A

LT1490ACDD | Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp in DFN package

Tools & Simulations

Tools & Simulations 4

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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