Integrated insulated-gate field-effect transistor circuit for evaluating the voltage of a node to be sampled against a fixed reference voltage

摘要

The circuit merely comprises three transistors, namely one transfer transistor (t) arranged between the input (e) and the output (a), a load transistor (l) connected as a resistor, and a clamping transistor (k), with both of the latter connecting the output (a) to the source of operating voltage (U). The interconnected gates of both the clamping and the transfer transistor (k, t) are connected to a source of reference voltage (Ur). If these two transistors (k, t) are of the depletion type, the two gates thereof may be connected to the zero point of the circuit. The circuit is particularly quick and simple.