Uniqueness of the operating point in MITE circuits

Multiple-input translinear element (MITE) networks can be used for linear/nonlinear analog signal processing where the low power consumption of these circuits outweighs the advantages of digital processing. The ideal MITE expression is valid only in the subthreshold saturation region. These networks typically have multiple feedback loops and hence, if not synthesized properly, will have multiple operating points not predicted by the ideal relationship. We present conditions on the topology of a general MITE network that ensure that the operating point, if it exists, is unique. Hence, we know that the operating point predicted by the ideal MITE expression is the only one in this case.