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  5. LTC1250

Data Sheet
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Overview

Features and Benefits

  • Very Low Noise: 0.75µVP-P Typ, 0.1Hz to 10Hz
  • DC to 1Hz Noise Lower Than OP-07
  • Full Output Swing into 1k Load
  • Offset Voltage: 10µV Max
  • Offset Voltage Drift: 50nV/°C Max
  • Common Mode Rejection Ratio: 110dB Min
  • Power Supply Rejection Ratio: 115dB Min
  • No External Components Required
  • Pin Compatible with Standard 8-Pin Op Amps
  • Available in Standard 8-Pin Plastic DIP and 8-Pin SO Packages

Product Details

The LTC1250 is a high performance, very low noise zero-drift operational amplifier. The LTC1250's combination of low front-end noise and DC precision makes it ideal for use with low impedance bridge transducers. The LTC1250 features typical input noise of 0.75µVP-P from 0.1Hz to 10Hz, and 0.2µVP-P from 0.1Hz to 1Hz. The LTC1250 has DC to 1Hz noise of 0.35µVP-P, surpassing that of low noise bipolar parts including the OP-07, OP-77, and LT1012. The LTC1250 uses the industry-standard single op amp pinout, and requires no external components or nulling signals, allowing it to be a plug-in replacement for bipolar op amps.

The LTC1250 incorporates an improved output stage capable of driving 4.3V into a 1k load with a single 5V supply; it will swing ±4.9V into 5k with ±5V supplies. The input common mode range includes ground with single power supply voltages above 12V. Supply current is 3mA with a ±5V supply, and overload recovery times from positive and negative saturation are 0.5ms and 1.5ms, respectively. The internal nulling clock is set at 5kHz for optimum low frequency noise and offset drift; no external connections are necessary.

The LTC1250 is available in a standard 8-pin plastic DIP and 8-pin SO packages.

Protected by U.S. Patents including 4933642.

Applications

  • Electronic Scales
  • Strain Gauge Amplifiers
  • Thermocouple Amplifiers
  • High Resolution Data Acquisition
  • Low Noise Transducers
  • Instrumentation Amplifiers

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Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
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    Design Resources

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    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC1250CN8#PBF Material Declaration Reliability Data 8-Lead PDIP (Narrow 0.3 Inch)
    LTC1250CS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC1250CS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    Wafer Fabrication Data R062 Reliability Data

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    • LTC1250CN8#PBF Production
    • LTC1250CS8#PBF Production
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