An ultralow-power CMOS transconductor design with wide input linear range for biomedical applications

Yen Ting Liu; Donald Y.C. Lie; Weibo Hu; Tam Nguyen

doi:10.1109/ISCAS.2012.6271730

An ultralow-power CMOS transconductor design with wide input linear range for biomedical applications

Yen Ting Liu, Donald Y.C. Lie, Weibo Hu, Tam Nguyen

Electrical and Computer Engineering

Research output: Contribution to conference › Paper › peer-review

16 Scopus citations

Abstract

This paper presents an ultralow-power CMOS linear transconductor design operating in weak inversion for low frequency g _m-C filter design for potential biomedical applications, where the transconductance should be low to reduce the capacitor size, and linear to minimize distortion. Bulk-driven and degeneration techniques are used, and we have adopted this G _m cell as a linear source degeneration resistor to achieve a 91% reduction in the transconductance value. In addition, a fourth-order Butterworth bandpass filter was designed in a proprietary 0.35-μm BCD (bipolar-CMOS-DMOS) process by Texas Instruments (TI). The SPICE simulation results indicate that the total harmonic distortion is greatly reduced to less than 71 dB at an input of 100 mV. The power consumption is only 750 nW at a 3-V supply voltage.

Original language	English
Pages	2211-2214
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2012.6271730
State	Published - 2012
Event	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: May 20 2012 → May 23 2012

Conference

Conference	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
Country/Territory	Korea, Republic of
City	Seoul
Period	05/20/12 → 05/23/12

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10.1109/ISCAS.2012.6271730

Cite this

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title = "An ultralow-power CMOS transconductor design with wide input linear range for biomedical applications",

abstract = "This paper presents an ultralow-power CMOS linear transconductor design operating in weak inversion for low frequency g m-C filter design for potential biomedical applications, where the transconductance should be low to reduce the capacitor size, and linear to minimize distortion. Bulk-driven and degeneration techniques are used, and we have adopted this G m cell as a linear source degeneration resistor to achieve a 91% reduction in the transconductance value. In addition, a fourth-order Butterworth bandpass filter was designed in a proprietary 0.35-μm BCD (bipolar-CMOS-DMOS) process by Texas Instruments (TI). The SPICE simulation results indicate that the total harmonic distortion is greatly reduced to less than 71 dB at an input of 100 mV. The power consumption is only 750 nW at a 3-V supply voltage.",

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year = "2012",

doi = "10.1109/ISCAS.2012.6271730",

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note = "2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 ; Conference date: 20-05-2012 Through 23-05-2012",

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AU - Liu, Yen Ting

AU - Lie, Donald Y.C.

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AU - Nguyen, Tam

PY - 2012

Y1 - 2012

N2 - This paper presents an ultralow-power CMOS linear transconductor design operating in weak inversion for low frequency g m-C filter design for potential biomedical applications, where the transconductance should be low to reduce the capacitor size, and linear to minimize distortion. Bulk-driven and degeneration techniques are used, and we have adopted this G m cell as a linear source degeneration resistor to achieve a 91% reduction in the transconductance value. In addition, a fourth-order Butterworth bandpass filter was designed in a proprietary 0.35-μm BCD (bipolar-CMOS-DMOS) process by Texas Instruments (TI). The SPICE simulation results indicate that the total harmonic distortion is greatly reduced to less than 71 dB at an input of 100 mV. The power consumption is only 750 nW at a 3-V supply voltage.

AB - This paper presents an ultralow-power CMOS linear transconductor design operating in weak inversion for low frequency g m-C filter design for potential biomedical applications, where the transconductance should be low to reduce the capacitor size, and linear to minimize distortion. Bulk-driven and degeneration techniques are used, and we have adopted this G m cell as a linear source degeneration resistor to achieve a 91% reduction in the transconductance value. In addition, a fourth-order Butterworth bandpass filter was designed in a proprietary 0.35-μm BCD (bipolar-CMOS-DMOS) process by Texas Instruments (TI). The SPICE simulation results indicate that the total harmonic distortion is greatly reduced to less than 71 dB at an input of 100 mV. The power consumption is only 750 nW at a 3-V supply voltage.

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T2 - 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012

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ER -

An ultralow-power CMOS transconductor design with wide input linear range for biomedical applications

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