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New Log-Domain First-Order Multifunction Filter Using MOSFETs in Weak Inversion
Department of Electronics Engineering, Institute of Engineering and Technology, Lucknow, India
Department of Electronics Engineering, Institute of Engineering and Technology, Lucknow, India
- 1 Department of Electronics Engineering, Institute of Engineering and Technology, Lucknow, India
- 2 Department of Electronics Engineering, Institute of Engineering and Technology, Lucknow, India
Circuits and Systems·Volume 07 (2016)·Pages 3522–3530·Published 6 September 2016·DOI10.4236/cs.2016.711299
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Abstract
A new current-mode first-order log-domain multifunction filter is presented in this paper. This filter has single input and provides three outputs (low-pass, high-pass and all-pass) using a first - order low-pass filter and five of current mirrors as building blocks. The proposed filter employs only MOSFETs and a grounded capacitor. The first - order filters are used in audio and video applications extensively. The MOSFETs of the core section are operated in weak inversion thereby making the circuit suitable for low-voltage, low-power applications. The SPICE simulations have shown good performance of the proposed filter.
KeywordsLog-Domain FiltersMultifunction FilterTranslinear Circuits
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