Enhancing circuit operation using analog floating gates

Consideration of random device mismatch is an important factor in the design of high performance analog circuits. Floating gate transistors have long been used for digital nonvolatile memory applications (such as flash memory), but a variant to this technology using an “analog floating gate” allows for higher precision programming. Analog floating gate devices can address mismatch observed in small geometry analog circuits. Enabling smaller devices to be used allows lower operating currents and higher frequencies. This property is exploited here to compensate for input mismatch and device parameter variations in an Operational Transconductance Amplifier.