Source follower‐based high‐speed switched capacitor amplifier for pipelined ADCs | Zendy

Qiu Lei | Zendy; Zheng Yuanjin | Zendy; Siek Liter | Zendy

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

Author(s) -

Qiu Lei,

Zheng Yuanjin,

Siek Liter

Publication year - 2015

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2014.3171

Subject(s) - switched capacitor , electronic engineering , capacitor , amplifier , operational amplifier , electrical engineering , computer science , engineering , cmos , voltage

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.

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