Making CMOS OTA a linear transconductor

In linear applications, the CMOS operational transconductance amplifiers (OTA) are only tolerable of small signals as they suffer from severe nonlinearity because of the source-coupled pairs. A new approach making ordinary OTA a linear transconductor capable of handling very large signals subject to the linear I-V restraint provided by a 2-MOSFET transresistor and feedback is presented.