<abstract xmlns="http://www.w3.org/1999/xhtml">
In this paper, the design methodology of a high-linearity wide-band transimpedance amplifier (TIA) for cable television (CATV) application is addressed. A simple four-stage topology is proposed to maintain a well-balanced linearity over a wide operating band. The regulated cascode (RGC) input stage is used to match an input impedance of 75 Ω, followed by a gain stage with enhanced bandwidth. The high-linearity output stage is able to drive the 75 Ω load directly with high output swing under a high supply voltage. The prototype is implemented with a standard 0.11μm CMOS process while occupying the silicon area of 0.034 mm2. The measurement results for the prototype show a peak gain of 76.6 dBΩ over a 3-dB bandwidth of 1.1 GHz with a considerably small gain ripple and an <italic>OIP</italic>3 of 20.4 dBm. The whole test chip consumes 447 mW DC power and the measured average input-referred noise current spectral density is 7.9 pA Hz−1/2 up to 1 GHz.
</abstract>

In this paper, the design methodology of a high-linearity wide-band transimpedance amplifier (TIA) for cable television (CATV) application is addressed. A simple four-stage topology is proposed to maintain a well-balanced linearity over a wide operating band. The regulated cascode (RGC) input stage is used to match an input impedance of 75 Ω, followed by a gain stage with enhanced bandwidth. The high-linearity output stage is able to drive the 75 Ω load directly with high output swing under a high supply voltage. The prototype is implemented with a standard 0.11μm CMOS process while occupying the silicon area of 0.034 mm2. The measurement results for the prototype show a peak gain of 76.6 dBΩ over a 3-dB bandwidth of 1.1 GHz with a considerably small gain ripple and an OIP3 of 20.4 dBm. The whole test chip consumes 447 mW DC power and the measured average input-referred noise current spectral density is 7.9 pA Hz−1/2 up to 1 GHz.

Design of wide-band high-linearity transimpedance amplifier using standard CMOS technology

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

In this paper, the design methodology of a high-linearity wide-band transimpedance amplifier (TIA) for cable television (CATV) application is addressed. A...

Design of wide-band high-linearity transimpedance amplifier using standard CMOS technology

Published Online: Oct 21, 2023

Page range: 413 - 421

Received: Jun 07, 2023

DOI: https://doi.org/10.2478/jee-2023-0049

Keywords
CMOS, CATV, transimpedance amplifier, high linearity, sensor interface, regulated cascode

© 2023 Zheng Gu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Design of wide-band high-linearity transimpedance amplifier using standard CMOS technology

Published Online: Oct 21, 2023

Page range: 413 - 421

Received: Jun 07, 2023

DOI: https://doi.org/10.2478/jee-2023-0049

KeywordsCMOS, CATV, transimpedance amplifier, high linearity, sensor interface, regulated cascode

© 2023 Zheng Gu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
CMOS, CATV, transimpedance amplifier, high linearity, sensor interface, regulated cascode