Novel circuit solutions for rail-to-rail CMOS buffer

Caiulo, G.; Malcovati, P.; Bona, C.; Maloberti, Franco

doi:10.1109/iscas.1995.523809

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…Some recent solutions have used a single input amplifier by using level shifting, supply voltage doubling, and bulk-driven pairs, to name a few [1]- [3]. However, typical rail-to-rail opamps have their input applied to dual PMOS and NMOS input stages simultaneously [4] [5] as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

A new design technique for rail-to-rail amplifiers

Amourah

Malik²,

Geiger³

2005

48th Midwest Symposium on Circuits and Systems, 2005.

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A design technique for rail-to-rail operational amplifiers is presented. The technique adds dummy pairs to sense the common mode range of the input differential pair and adjusts the output current accordingly. An amplifier built in the TSMC 0.25μ process shows a DC gain of approximately 84dB. The amplifier provides high gain for a wider range of output voltages. Design considerations for reducing the impact of the additional circuitry on the core are provided. The technique described can be adapted for use with traditional fully-differential rail-to-rail amplifiers. I.

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