Rail-to-rail CMOS complementary input stage with alternating active differential pairs

Valero, M. R.; Roman‐Loera, Alejandro; Ramírez-Angulo, J.; Medrano, N.; Celma, S.

doi:10.1109/iscas.2014.6865395

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Cited by 5 publications

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“…The most widespread technique is the usage of a complementary input differential pair , where both N‐channel metal‐oxide semiconductor (NMOS) and PMOS devices are used, summing their current at a following stage. While allowing full swing signals, this technique is associated with variable g m and variable offset as the input common mode (CM) changes.…”

Section: Introductionmentioning

confidence: 99%

An offset cancellation technique of complementary input pair buffers for continuous time applications

Mountrichas

Siskos

2016

Circuit Theory & Apps

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Summary This letter describes an offset cancellation technique for rail‐to‐rail complementary input pair operational amplifiers in unity gain loop configuration that overcomes the variable offset and minimizes distortion. The simulated buffer exhibits up to 40 dB increase in spurious‐free dynamic range and up to 30 dB increase in signal‐to‐noise and distortion ratio. When used to buffer a continuous time modulator, the performance matches that of chopping. Measurement results verify the technique, illustrating effective offset cancellation regardless of the input signal level. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%