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A programmable 1.5 V CMOS class-AB operational amplifier with hybrid nested Miller compensation for 120 dB gain and 6 MHz UGF

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3 Author(s)
Eschauzier, Ruud G.H. ; Fac. of Electr. Eng., Delft Univ. of Technol., Netherlands ; Hogervorst, Ron ; Huijsing, J.H.

The paper presents a rail-to-rail class-AB operational amplifier in a standard vth=0.6 V CMOS technology operating at 1.5 V. A hybrid nested Miller compensation technique yields 6 MHz unity gain frequency at 300 μA supply current, 120 dB gain and programmability. Operation down to 1.0 V at 15 μA is possible with 300 kHz UGF. The die area of the chip is 0.05 mm2 (70 mil2)

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:29 ,  Issue: 12 )