Source follower-based high-speed switched capacitor amplifier for pipelined ADCs

Author

Lei Qiu ; Yuanjin Zheng ; Siek, Liter

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

51

Issue

1

fYear

2015

fDate

1 8 2015

Firstpage

21

Lastpage

23

Abstract

A low-power high-speed source follower-based switched capacitor (SC) amplifier for pipelined analogue-to-digital converters (ADCs) is proposed. Using the source follower as the core of the SC amplifier, the power consumption can be significantly reduced while obtaining the same linearity and bandwidth. Meanwhile, through replicating the input signal to the drain of the input transistor, the channel-length modulation effect can be suppressed, achieving a high linearity (>60 dB). The functionality and linearity of the proposed SC amplifier are verified by simulation results.

Keywords

amplifiers; analogue-digital conversion; low-power electronics; power consumption; switched capacitor networks; SC amplifier; channel-length modulation effect; input signal; input transistor; low power source follower-based high-speed switched capacitor amplifier; pipelined ADCs; pipelined analogue-to-digital converters; power consumption;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.3171

Filename

7006863