Low power consumption 5 MHz-low-pass CT ARC-filter

Abstract

In contemporary electronics low power consumption devices, especially analog CT ARC-filters, are of a great significance for employing in areas of communication, instrumentation, security systems, etc. The design of such filters, especially for operation in the MHz-band, is not a quite ordinary problem. The traditional solution is the design of complex CMOS schematics (filter itself, frequency tuning system, etc). Meanwhile the ARC-filter, based upon a ladder RC-circuit and having the minimal number of active elements, is rather convenient. This design provides the lower power consumption as well as simple network and technology. The principles of the design procedure of such type filters are considered. The procedure is illustrated with the designing of the LPF for 5 MHz-band; the supply voltage is 2.5 V, the power consumption is 1.35 mW. In this work we show the possibility to solve the design problem in a simple schematic basis.