LT1990
Info : RECOMMENDED FOR NEW DESIGNS
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LT1990

±250V Input Range G = 1, 10, Micropower, Difference Amplifier

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 12
1ku List Price Starting From $1.83
Features
  • Pin Selectable Gain of 1 or 10
  • High Common Mode Voltage Range:
    • 85V Window (VS = 5V, 0V)
    • ±250V (VS = ±15V)
  • Common Mode Rejection Ratio: 70dB Min
  • Input Protection to ±350V
  • Gain Error: 0.28% Max
  • PSRR: 82dB Min
  • High Input Impedance: 2MΩ Differential, 500kΩ Common Mode
  • Micropower: 120µA Max Supply Current
  • Wide Supply Range: 2.7V to 36V
  • –3dB Bandwidth: 100kHz
  • Rail-to-Rail Output
  • 8-Pin SO Package
Additional Details
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The LT1990 is a micropower precision difference amplifier with a very high common mode input voltage range. It has pin selectable gains of 1 or 10. The LT1990 operates over a ±250V common mode voltage range on a ±15V supply. The inputs are fault protected from common mode voltage transients up to ±350V and differential voltages up to ±500V. The LT1990 is ideally suited for both high side and low side current or voltage monitoring.

On a single 5V supply, the LT1990 has an adjustable 85V input range, 70dB min CMRR and draws less than 120µA supply current. The rail-to-rail output maximizes the dynamic range, especially important for single supplies as low as 2.7V.

The LT1990 is specified for single 3V, 5V and ±15V supplies over both commercial and industrial temperature ranges. The LT1990 is available in the 8-pin SO package.

Applications

  • Battery Cell Voltage Monitoring
  • High Voltage Current Sensing
  • Signal Acquisition in Noisy Environments
  • Input Protection
  • Fault Protected Front Ends
  • Level Sensing
  • Isolation
Part Models 12
1ku List Price Starting From $1.83

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Oct 12, 2022

- 22_0255

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

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- 21_0026

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PCN

Oct 12, 2022

- 22_0255

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

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PRODUCTION

LT1990ACS8#TRPBF

PRODUCTION

LT1990AHS8#PBF

PRODUCTION

LT1990AHS8#TRPBF

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LT1990HS8#TRPBF

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Jun 16, 2021

- 21_0026

arrow down

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

LT1990ACS8#PBF

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LT1990ACS8#TRPBF

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LT1990AHS8#PBF

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LT1990AHS8#TRPBF

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LT1990AIS8#PBF

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LT1990AIS8#TRPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC819A

LT1990CS8/LT1991CMS/LT1995CMS | Configurable Gain Amplifiers, V+ = +2.5V to +15V, V– = –2.5V to –15V

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DC819A

LT1990CS8/LT1991CMS/LT1995CMS | Configurable Gain Amplifiers, V+ = +2.5V to +15V, V– = –2.5V to –15V

LT1990CS8/LT1991CMS/LT1995CMS | Configurable Gain Amplifiers, V+ = +2.5V to +15V, V– = –2.5V to –15V

Product Detail

DC819A Demo Board for:

LT1990 ±250V Input Range G = 1, 10, Micropower, Difference Amplifier

LT1995 30MHz, 1000V/µs Gain Selectable Amplifier

LT1991 Precision, 100µA Gain Selectable Amplifier

Tools & Simulations

Tools & Simulations 1

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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