Abstract
The integrator is an important building block in circuit design and its transfer characteristic is inherently frequency-dependent. When it is implemented as an $RC$ op-amp circuit, a nonlinear element (the amplifier) is placed within a frequency-dependent feedback loop. Conventional techniques allow us to obtain the nonlinear error easily at certain frequencies only. Furthermore, when the integrator is periodically reset, the circuit is not in steady-state and conventional techniques assuming a steady-state behavior do not apply. It is not obvious how the actual error relates to the circuit parameters when the integrator is driven with a wideband signal. In this paper we present an approach to quickly estimate the normalized mean squared error (NMSE) as a function of the circuit and signal parameters. We show that, to first-order, the NMSE is proportional to the ratio of the signal bandwidth and the dominant pole of the integrator. For an integrator with reset, the signal builds up from zero and results in an additional, integration-time dependent NMSE reduction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Circuits and Systems I: Regular Papers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
