Battery level A/D conversion with fuel gauge sense voltage cancellation in 40 nm CMOS technology
A new integrated approach for battery voltage conversion inside portable devices is presented. It is specifically suited for latest Fuel Gauge techniques and exploits an A/D converter that operates as a General Purpose ADC inside the system. A peculiar solution for an analog cancellation of the Coul...
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| Veröffentlicht in: | Analog integrated circuits and signal processing 2014-05, Vol.79 (2), p.237-244 |
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| container_title | Analog integrated circuits and signal processing |
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| creator | Zamprogno, Marco Minuti, Alberto Girardi, Francesca Nicollini, Germano |
| description | A new integrated approach for battery voltage conversion inside portable devices is presented. It is specifically suited for latest Fuel Gauge techniques and exploits an A/D converter that operates as a General Purpose ADC inside the system. A peculiar solution for an analog cancellation of the Coulomb counter sense resistor voltage drop on the battery level measurement is disclosed. A prototype made by this battery voltage buffer and a 10-bit A/D converter has been integrated in a 40 nm CMOS process with double oxide option, resulting to a total power consumption of about 950 μW, and an active area of 0.174 mm
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| doi_str_mv | 10.1007/s10470-014-0276-2 |
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| source | SpringerNature Journals |
| subjects | Cancellation Circuits and Systems CMOS Electric batteries Electric potential Electrical Engineering Engineering Gages Gauges Signal,Image and Speech Processing Voltage |
| title | Battery level A/D conversion with fuel gauge sense voltage cancellation in 40 nm CMOS technology |
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