Quad, 15.5-V, 1.5-MHz operational amplifier

The LMC6492 and LMC6494 (LMC649x) amplifiers were

specifically developed for single-supply applications that operate from −40°C to

+125°C. This feature is an excellent choice for automotive systems because of the

wide temperature range. A unique design topology enables the LMC649x common-mode

voltage range to accommodate input signals beyond the rails. This eliminates

non-linear output errors due to input signals exceeding a traditionally limited

common-mode voltage range. The LMC649x signal range has a high CMRR of 82dB for

excellent accuracy in noninverting circuit configurations.

The LMC649x rail-to-rail input is complemented by

rail-to-rail output swing. This configuration provides maximum dynamic signal range

and is particularly important in 5V systems.

An ultra-low input current of 150fA and a 120dB

open-loop gain provide high accuracy and direct interfacing with high-impedance

sources.