Abstract :
Due to the good controllability and
electronic tunability features, OTA is used for
designing of active filters. OTA based active filters
required minimum component in comparative to
other analog building blocks. In this paper, OTA
based second order active filter is presented which
realizes Low pass filter, High pass, Band pass and
Band reject filters. The proposed circuit is designed
using CA3080 IC on 20 KHz frequency so that it can
be suitable for audio frequency ranges (0-20 KHz)
and the peak to peak voltage is used 30 mV.
Simulation results and PCB Layout, 3-D View are
also shown so that it can be implemented on
hardware. The NI-Multisim software and ultiboard
is used for simulation results and PCB layout.
Keyword :
OTA, active filters, CA 3080 IC, Simulation results, NI-multisim, Ultiboard