Publication detail

A 12-BIT LOW POWER SC PIPELINED ADC USING NOVEL BACKGROUND CALIBRATION APPROACH

HÁZE, J. VRBA, R. FUJCIK, L. SAJDL, O. SKOČDOPOLE, M.

Original Title

A 12-BIT LOW POWER SC PIPELINED ADC USING NOVEL BACKGROUND CALIBRATION APPROACH

English Title

A 12-BIT LOW POWER SC PIPELINED ADC USING NOVEL BACKGROUND CALIBRATION APPROACH

Type

conference paper

Language

en

Original Abstract

The paper deals with a novel 12-bit low power switchedcapacitor (SC) pipelined analog-to-digital converter (ADC). The problems caused by using of SC technique are compensated or roughly attenuated by means of combination of well-known analog-domain techniques and new digital background calibration technique. Since portable applications demand for low power consumption, it is one of the most important issues onsidered in the design. A modified operational-amplifier (op-amp) sharing technique was used to decrease the power usage as well as capacitor scaling approach. To avoid the clock feedthrough from digital part through the switches the fully differential circuitry was utilized. The special op-amps and comparators were designed for this purpose and to obtain large bandwidth. The power consumption of the op-amps was taken into account too. The finite op-amp dc gain problem is solved in digital-domain using background calibration. The capacitor mismatch and op-amp offset are compensated in the same manner.

English abstract

The paper deals with a novel 12-bit low power switchedcapacitor (SC) pipelined analog-to-digital converter (ADC). The problems caused by using of SC technique are compensated or roughly attenuated by means of combination of well-known analog-domain techniques and new digital background calibration technique. Since portable applications demand for low power consumption, it is one of the most important issues onsidered in the design. A modified operational-amplifier (op-amp) sharing technique was used to decrease the power usage as well as capacitor scaling approach. To avoid the clock feedthrough from digital part through the switches the fully differential circuitry was utilized. The special op-amps and comparators were designed for this purpose and to obtain large bandwidth. The power consumption of the op-amps was taken into account too. The finite op-amp dc gain problem is solved in digital-domain using background calibration. The capacitor mismatch and op-amp offset are compensated in the same manner.

Keywords

Pipelined ADC, switched-capacitor technique, background calibration, portable application.

RIV year

2005

Released

01.01.2005

Publisher

IEE

Location

Limerick, Irsko

ISBN

0-86341-542-3

Book

Proceedings of the 5th IEE International Conference on ADDA 2005

Pages from

283

Pages to

287

Pages count

5

BibTex


@inproceedings{BUT14984,
  author="Jiří {Háze} and Radimír {Vrba} and Lukáš {Fujcik} and Ondřej {Sajdl} and Michal {Skočdopole}",
  title="A 12-BIT LOW POWER SC PIPELINED ADC USING NOVEL BACKGROUND CALIBRATION APPROACH",
  annote="The paper deals with a novel 12-bit low power switchedcapacitor (SC) pipelined analog-to-digital converter (ADC). The problems caused by using of SC technique are compensated or roughly attenuated by means of combination of well-known analog-domain techniques and new digital background calibration technique.
Since portable applications demand for low power consumption, it is one of the most important issues onsidered in the design. A modified operational-amplifier (op-amp) sharing technique was used to decrease the power usage as well as capacitor scaling approach. To avoid the clock feedthrough from digital part through the switches the fully differential circuitry was utilized. The special op-amps and comparators were designed for this purpose and to obtain large bandwidth. The power consumption of the op-amps was taken into account too. The finite op-amp dc gain problem is solved in digital-domain using background calibration. The capacitor mismatch and op-amp offset are compensated in the same manner.",
  address="IEE",
  booktitle="Proceedings of the 5th IEE International Conference on ADDA 2005",
  chapter="14984",
  institution="IEE",
  year="2005",
  month="january",
  pages="283",
  publisher="IEE",
  type="conference paper"
}