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  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. Zero-Drift Op Amps
  5. LTC1250

Alternative Parts


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.


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Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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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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