Description

This application note describes a monolithic operational amplifier which has input error currents in theorder of 100 pA over a −55°C to 125°C temperature range. Instead of FETs the circuit used bipolartransistors with current gains of 5000 so that offset voltage and drift are not degraded. A powerconsumption of 1 mW at low voltage is also featured.A number of novel circuits that make use