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A CMOS 33-mW 100-MHz 80-dB SFDR Sample-and-Hold Amplifier

Cheng-Chung HSU, Jieh-Tsorng WU

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Summary :

A high-speed high-resolution sample-and-hold amplifier (SHA) is designed for time-interleaved analog-to-digital converter applications. Using the techniques of precharging and output capacitor coupling can mitigate the stringent performance requirements for the opamp, resulting in low power dissipation. Implemented in a standard 0.25 µm CMOS technology, the SHA achieves 80 dB spurious-free dynamic range (SFDR) for a 1.8 Vpp output at 100 MHz Nyquist sampling rate. The SHA occupies a die area of 0.35 mm2 and dissipates 33 mW from a single 2.5 V supply.

Publication
IEICE TRANSACTIONS on Electronics Vol.E86-C No.10 pp.2122-2128
Publication Date
2003/10/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Electronic Circuits

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