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36V op amp features low voltage noise precision

The LT6018, a precision op amp from Linear Technology, features 30nV peak to peak 0.1Hz to 10Hz noise and 50μV max input offset voltage. Designed especially for low frequency noise applications, the LT6018 has a 1/f corner frequency of less than 1Hz. The low input offset voltage is maintained over the operating temperature range and the input common mode range. Open loop gain is typically 142dB, enabling the device to achieve less than 1ppm nonlinearity.

The LT6018 has 15MHz gain-bandwidth product and employs enhancement circuitry to achieve a slew rate of up to 30V/µs. The part draws 7.2mA, which can be reduced during periods of non-use to 6.2μA using its shutdown pin.

The LT6018 is specified for operations ranging from 8V to 33V, for industrial temperatures ranging from –40 to 85°C and extended temperatures from –40 to 125°C. It is available in SO-8E, with an exposed centre pad for enhanced heat dissipation, and 4 x 3mm DFN packages.

Key features:
  • Low voltage noise of 1.2nV/√Hz typical at 1kHz
  • Maximum offset voltage drift of 0.5μV/°C
  • CMRR: 124dB minimum
  • AVOL: 132dB minimum
  • Gain-bandwidth product of 15MHz
  • Supply range: 8 to 33V
  • THD of –115dB at 1kHz
  • Unity gain stable
  • 4.5kV HBM and 2kV CDM tolerant
  • Author
    Peggy Lee

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