Precision, low power, and low noise together in a LF, rail/rail opamp

November 07, 2016 // By Graham Prophet
Maxim Integrated recently posted details of its MAX40100 op amp. The partf eatures rail-to-rail CMOS inputs and outputs, a 1.5MHz GBW for 66 μA supply current, and 10 μV (max) “zero-drift” input voltage offset over time and temperature.

This low-power, zero-drift operational amplifier is intended for use in portable consumer, medical, and industrial applications, the zero-drift feature of the MAX40100 reduces the high 1/f noise typically found in CMOS input operational amplifiers, making it useful for a wide variety of low-frequency measurement applications. The MAX40100 is available in an 1.1 x 0.76 mm, 6-bump WLP (wafer-level-package), with 0.35 mm bump pitch. The MAX40100 is specified over the -40°C to +125°C extended automotive operating temperature range.


Features include;

- 66 μA quiescent current

- Input noise: 42 nV√Hz @ 1kHz, 0.42 μVPP from 0.1 Hz to 10 Hz

- Rail-to-rail inputs and outputs (RRIO)

- 1.5 MHz GBW

- Ultra-low 10 pA input bias current

- Single 1.6V to 5.5V supply voltage range

- Unity gain stable

- Power-saving shutdown mode

- 1.1mm x 0.76mm 6-bump WLP


Maxim Integrated;