A single chip NMOS signal processor

A device is described that is a programmable single chip analog and digital signal processor. It is specifically designed to replace analog subsystems in real time processing applications. The instruction set plus the high precision (25 bits) arithmetic provides the capability to implement very complex analog sub-systems. The device has a 9 bit analog acquisition system that includes multi-channel analog input/output. Typical functions that can be realized include lowpass and bandpass filters with up to 20 pole pairs, threshold detectors, limiters, rectifiers, and various non-linear approximations.