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A compact rail-to-rail output stage for CMOS operational amplifiers

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1 Author(s)
B. Sekerkiran ; ETA ASIC Design Center, Istanbul Tech. Univ., Turkey

This paper presents a CMOS output stage devised for driving heavy resistive loads. An operational amplifier of this type has been fabricated in a 3 μm double-polysilicon CMOS technology. With a supply voltage of ∓5 V and load of 470 Ω, the amplifier has a ∓4.6-V output swing and features a 60 mA short-circuit output current. Although simple, the proposed configuration enables the output transistors to be driven efficiently

Published in:

IEEE Journal of Solid-State Circuits  (Volume:34 ,  Issue: 1 )