36V precision op amp cuts LF noise to ultra-low levels

August 18, 2016 // By Graham Prophet
LT6018 is a precision op amp featuring 30n Vp-p, 0.1 Hz to 10 Hz, noise and 50 μV max input offset voltage. Designed especially for applications sensitive to low frequency noise, the LT6018 has a very low 1/f corner frequency of less than 1 Hz.

The low input offset voltage holds over temperature and input common mode range: TCVOS is 0.5 μV/°C maximum and CMRR is 124 dB minimum. Open loop gain is typically 142 dB, enabling the device to achieve less than 1 ppm nonlinearity.


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


The LT6018 is specified for operation from 8V to 33V supplies, for industrial (–40°C to 85°C) and extended (–40°C to 125°C) temperature ranges. It is available in SO-8E with exposed centre pad for enhanced heat dissipation, and space-saving 4 x 3 mm DFN packages. It is priced starting at $3.25 (1000).


Linear Technology; www.linear.com/product/LT6018


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