PIPELINE ANALOG-TO-DIGITAL CONVERSION WITH CHARGE-COUPLED DEVICES.

A circuit operating on the same principle to that described in the above correspondence is cited and its extension to the anti- logarithm problem described. The above correspondence described a circuit that is essen- tially the same as a circuit previously described [ 1 ] . In this previous work, a circuit technique’ was proposed that could perform the general analog function subject to the condition that O was also based on the exponential form of an R C circuit discharge. The previous publication not only used RC differentiation to generate the logarithm of a quotient in (VI/ V2), but also extended the principle by using an R C integrator to yield the quotient itself. In order to avoid infinities the circuit was designed to generate VI/( VI + V2). Fig. 1 in [1] shows a block diagram of the circuit where