The Differential Amplifier is an excellent value for the money.High performance is accessed here for amplification purposes using 1 functions.16 pins make up the total number of pins on the part.There should be a constant supply current and it shouldn't go beyond 23 mA.
LTC6405IUD Features
LTC6405IUD Applications
There are a lot of Analog Devices LTC6405IUD Special Purpose Amplifiers applications.