A Design of 1 V CMOS-OTA with Wide Input Range
Summary :
OTA (Operational Transconductance Amplifier) is a useful circuit in analog signal processing systems, especially in high-frequency applications. Important features of OTA are: infinite input impedance, electrically changeable transconductance (Gm), and much wider operation range without negative feedback such as in OPamp applications. The good linearity of OTA over wide input range is necessary to extend the application fields of OTA. Several techniques are developed to extend the input range with good linearity. In this paper, a highly-linear CMOS-OTA operating under 1 V power supply, is proposed. The concept of the proposed OTA is based on class-AB operation of two n-channel MOSFETs in the saturation region. By improving the input stage circuits, wide input range can be achieved. SPICE simulations are performed to verify the performance of the proposed OTA.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E77-A No.2 pp.356-362
- Publication Date
- 1994/02/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Section on High-Performance MOS Analog Circuits)
- Category
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Kenji TOYOTA, Akira HYOGO, Keitaro SEKINE, "A Design of 1 V CMOS-OTA with Wide Input Range" in IEICE TRANSACTIONS on Fundamentals,
vol. E77-A, no. 2, pp. 356-362, February 1994, doi: .
Abstract: OTA (Operational Transconductance Amplifier) is a useful circuit in analog signal processing systems, especially in high-frequency applications. Important features of OTA are: infinite input impedance, electrically changeable transconductance (Gm), and much wider operation range without negative feedback such as in OPamp applications. The good linearity of OTA over wide input range is necessary to extend the application fields of OTA. Several techniques are developed to extend the input range with good linearity. In this paper, a highly-linear CMOS-OTA operating under 1 V power supply, is proposed. The concept of the proposed OTA is based on class-AB operation of two n-channel MOSFETs in the saturation region. By improving the input stage circuits, wide input range can be achieved. SPICE simulations are performed to verify the performance of the proposed OTA.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e77-a_2_356/_p
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@ARTICLE{e77-a_2_356,
author={Kenji TOYOTA, Akira HYOGO, Keitaro SEKINE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Design of 1 V CMOS-OTA with Wide Input Range},
year={1994},
volume={E77-A},
number={2},
pages={356-362},
abstract={OTA (Operational Transconductance Amplifier) is a useful circuit in analog signal processing systems, especially in high-frequency applications. Important features of OTA are: infinite input impedance, electrically changeable transconductance (Gm), and much wider operation range without negative feedback such as in OPamp applications. The good linearity of OTA over wide input range is necessary to extend the application fields of OTA. Several techniques are developed to extend the input range with good linearity. In this paper, a highly-linear CMOS-OTA operating under 1 V power supply, is proposed. The concept of the proposed OTA is based on class-AB operation of two n-channel MOSFETs in the saturation region. By improving the input stage circuits, wide input range can be achieved. SPICE simulations are performed to verify the performance of the proposed OTA.},
keywords={},
doi={},
ISSN={},
month={February},}
Copy
TY - JOUR
TI - A Design of 1 V CMOS-OTA with Wide Input Range
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 356
EP - 362
AU - Kenji TOYOTA
AU - Akira HYOGO
AU - Keitaro SEKINE
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E77-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 1994
AB - OTA (Operational Transconductance Amplifier) is a useful circuit in analog signal processing systems, especially in high-frequency applications. Important features of OTA are: infinite input impedance, electrically changeable transconductance (Gm), and much wider operation range without negative feedback such as in OPamp applications. The good linearity of OTA over wide input range is necessary to extend the application fields of OTA. Several techniques are developed to extend the input range with good linearity. In this paper, a highly-linear CMOS-OTA operating under 1 V power supply, is proposed. The concept of the proposed OTA is based on class-AB operation of two n-channel MOSFETs in the saturation region. By improving the input stage circuits, wide input range can be achieved. SPICE simulations are performed to verify the performance of the proposed OTA.
ER -
English
