Name
Title | ||
|---|---|---|
A capacitively-coupled chopper operational amplifier with 3μV Offset and outside-the-rail capability |
Abstract | ||
|---|---|---|
This paper presents a capacitively-coupled chopper operational amplifier whose maximum input common-mode voltage far exceeds its 5V supply. To achieve low offset, it employs a capacitively-driven input chopper, which can handle the wide input common-mode voltage with low power dissipation. To suppress chopping ripple, it employs an area-efficient switched-capacitor ripple-reduction loop. Implemented in a high-voltage 0.7μm CMOS technology, the amplifier achieves 3μV offset and an NEF of 5.1, while consuming 10μA. The chip has an active area of 1.2mm2. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/ESSCIRC.2012.6341259 | ESSCIRC |
Keywords | Field | DocType |
switched capacitor networks,cmos integrated circuits,operational amplifiers,low power dissipation,cmos technology,outside-the-rail capability,capacitively-coupled chopper operational amplifier,area-efficient switched-capacitor ripple-reduction loop,chopping ripple,capacitively-driven input chopper,wide input common-mode voltage,maximum input common-mode voltage,capacitors,noise | Input offset voltage,Computer science,Operational transconductance amplifier,Direct-coupled amplifier,Control engineering,Electronic engineering,Op amp integrator,Operational amplifier applications,Chopper,Operational amplifier,Amplifier | Conference |
ISSN | ISBN | Citations |
1930-8833 E-ISBN : 978-1-4673-2211-9 | 978-1-4673-2211-9 | 1 |
PageRank | References | Authors |
0.50 | 3 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Qinwen Fan | 1 | 33 | 8.21 |
| Johan H. Huijsing | 2 | 9 | 2.98 |
| Kofi A. A. Makinwa | 3 | 506 | 105.58 |