TITLE:
New Log-Domain First-Order Multifunction Filter Using MOSFETs in Weak Inversion
AUTHORS:
Manoj Kumar Jain, Vinod Kumar Singh
KEYWORDS:
Log-Domain Filters, Multifunction Filter, Translinear Circuits
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.11,
September
8,
2016
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.