Rail-to-rail input-stage with linearly tunable transconductance

Rail-to-rail input-stage with linearly tunable transconductance

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

A new technique for the rail-to-rail input stage is proposed. The proposed technique is based on the master-slave approach of complementary MOS transistor pairs. The input transconductance is linearly tunable over a large range and is almost constant for the rail-to-rail common-mode range. The effectiveness of the proposed technique was verified by simulations using a standard 0.18 µm CMOS process.


    1. 1)
      • Yan, S., Hu, J., Song, T., Sanchez-Sinencio, E.: `A constant-g', Proc. ISCAS, 2005, Kobe, Japan, p. 2567–2570.
    2. 2)
      • M.M. Ahmadi . An adaptive biased single-stage CMOS operational amplifier with novel rail-to-rail constant-gm input stage. Analog Integr. Circuits Signal Process. , 10 , 71 - 78
    3. 3)
      • J.E. Duque-Carrillo , J.M. Carrillo , J.L. Ausin , G. Torelli . Input/output rail-to-rail CMOS operational amplifier with shaped common-mode response. Analog Integr. Circuits Signal Process. , 3 , 221 - 232
    4. 4)
      • J. Ramirez-Angulo , S. Balasubramanian , A.J. Lopez-Martin , R.G. Carvajal . Low voltage differential input stage with improved CMRR and true rail-rail common mode input range. IEEE Trans. Circuits Syst. II, Express Briefs , 12 , 1229 - 1233
    5. 5)
      • Raut, R.: `Stabilizing the transconductance in CMOS transconductors for application in gm-C filters', Proc. ISCAS, 2001, Sydney, Australia, p. 556 – 559.
    6. 6)

Related content

This is a required field
Please enter a valid email address