Low frequency noise characterization of very large value resistors

A very simple circuit configuration is described which allows to characterize the noise of very large value resistors. With this measurement setup we investigated the low frequency noise of large value resistors, tens of G/spl Omega/ range, realized with different technologies, at different bias voltages. A technique is suggested that allows to reduce the low frequency noise contribution, by optimizing the connecting arrangement. A short review of the resistor noise theory is given.