Title :
A comparative analysis of switched-current circuits
Author :
Nairn, D.G. ; Biman, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
fDate :
11/1/1996 12:00:00 AM
Abstract :
Switched Current (SI) samplers are classified as either saturation samplers or triode samplers, based on the operating mode of the sampling transistor. Then the limitations on speed, SNR, and power dissipation are found for the two samplers along with their optimum bias levels. Based on the analysis, an SI sampler using the saturation mode offers the best overall performance. If a sampler based on the triode mode is used, its performance can be maximized with the use of a regulated cascode structure
Keywords :
analogue-digital conversion; circuit noise; circuit optimisation; switched current circuits; SNR; operating mode; optimum bias levels; power dissipation; regulated cascode structure; sampling transistor; saturation mode; saturation samplers; switched-current circuits; triode mode; triode samplers; Circuit analysis; MOSFETs; Performance analysis; Power dissipation; Power measurement; Sampling methods; Switching circuits; Tin; Velocity measurement; Voltage;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on