ABSTRACT
For example, in the current-mode circuits, the summation circuit is designed with wired-or structure because the input of current mirror is a relatively low impedance node and may be considered a signal ground. The summation is carried out with current quantities added for a small calculation time. Moreover, the current-mode circuit has a feature such as a constant power consumption that is independent of operating frequency. Due to a simple summation circuit structure and a small calculation time of current mode circuits, the power consumption of a current-mode multimedia device is drastically cut down. Current-mode circuits that rely on current mirrors are usually designed with the sampled or switched current (SI) types, and generally implemented in complementary metal-oxide silicon (CMOS) technology which has compatibility of conventional digital signal processing. The current-mode analog finite-impulse-response (FIR) Filter with a variable tap circuit has been designed for the multimedia device with low power consumption and a high speed operation.
