TY - GEN
T1 - Area-efficient RC low pass filter using T-networked resistors and capacitance multiplier
AU - Seok, Changho
AU - Lim, Kyomuk
AU - Seo, Jindeok
AU - Kim, Hyeunho
AU - Im, Seunghyun
AU - Kim, Ji Hoon
AU - Kim, Choul Young
AU - Ko, Hyoungho
PY - 2013
Y1 - 2013
N2 - A low pass filters (LPFs) are important building blocks for many analog integrated circuit design. The biomedical applications or the sensor applications require the LPFs with very low cut-off frequency. The simplest way to implement the LPF is using the passive RC filter. The passive RC LPF, however, consumes large chip area when the desired time constant is large. The transconductance-C (gm-C) filter or the switched capacitor (SC) filters are widely used to achieve the low cut-off frequency in limited area. However, non-linearity and switching noise are major drawbacks of the g m-C filters and the SC filters. This paper presents an area-efficient LPF using T-networked resistors and current-mode capacitance multiplier. The area of the proposed LPF is reduced to 8.31 % of the conventional passive RC LPF at the same cut-off frequency of 7.1 kHz. The proposed LPF is designed using standard 0.18 μm CMOS process with the option process of high-resistivity polysilicon resistor and metal-insulator-metal capacitor.
AB - A low pass filters (LPFs) are important building blocks for many analog integrated circuit design. The biomedical applications or the sensor applications require the LPFs with very low cut-off frequency. The simplest way to implement the LPF is using the passive RC filter. The passive RC LPF, however, consumes large chip area when the desired time constant is large. The transconductance-C (gm-C) filter or the switched capacitor (SC) filters are widely used to achieve the low cut-off frequency in limited area. However, non-linearity and switching noise are major drawbacks of the g m-C filters and the SC filters. This paper presents an area-efficient LPF using T-networked resistors and current-mode capacitance multiplier. The area of the proposed LPF is reduced to 8.31 % of the conventional passive RC LPF at the same cut-off frequency of 7.1 kHz. The proposed LPF is designed using standard 0.18 μm CMOS process with the option process of high-resistivity polysilicon resistor and metal-insulator-metal capacitor.
KW - T-networked resistors
KW - anti-aliasing filter
KW - area-efficient low pass filter
KW - current-mode capacitance multiplier
UR - https://www.scopus.com/pages/publications/84893604180
U2 - 10.1109/ICCAS.2013.6704155
DO - 10.1109/ICCAS.2013.6704155
M3 - Conference contribution
AN - SCOPUS:84893604180
SN - 9788993215052
T3 - International Conference on Control, Automation and Systems
SP - 1308
EP - 1311
BT - ICCAS 2013 - 2013 13th International Conference on Control, Automation and Systems
T2 - 2013 13th International Conference on Control, Automation and Systems, ICCAS 2013
Y2 - 20 October 2013 through 23 October 2013
ER -