M. Santo Zarnik, F. Novak. <br>
On oscillation-based test structures of active RC filters, </a><br>
<i>International Journal of Numerical
Modelling, Electronic networks, Devices and Fields,</i> Vol. 14, Issue. 3, 2001, pp. 283-288. <p>


The recently proposed oscillation-based test structures of active RC filters assume ideal opamps 
and test switches. In this letter,  feasibility case study  of the oscillation-based test 
structure of the resonant bandpass filter is presented in which non-ideal characteristics 
of the employed opamps and MOS switches are considered. Based on the dominant pole model 
for the opamps, we derive expression for the minimum value of the resistance required 
to put the filter stage into oscillation and expression for the frequency of the undamped pole. 
Derived expressions describe the conditions for the implementation of the oscillation-based 
test in practice. 


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(reprints available on request)