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Pulsewidth Modulation Circuits Using CMOS OTAs

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3 Author(s)
Hoon Kim ; Hanyang Univ., Ansan ; Hee-Jun Kim ; Won-Sup Chung

This paper presents three pulsewidth modulation modulators using CMOS operational transconductance amplifiers. They consist of a ramp integrator and current-tunable Schmitt triggers. Prototype circuits built using discrete components exhibited that their duty cycles are linearly controllable. Because of their simple structure, the proposed modulators can be easily fabricated in a monolithic integrated circuit.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:54 ,  Issue: 9 )