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Charge Amplifier With an Enhanced Frequency Response for SPM-Based Data Storage
- Source :
- IEEE Transactions on Circuits and Systems II: Express Briefs. 57:691-695
- Publication Year :
- 2010
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2010.
-
Abstract
- Storage systems based on scanning probe microscopy incorporate an array of thermopiezoelectric cantilevers that require charge amplifiers with a wide frequency response but low power consumption. We use an improved frequency compensation method to enhance the in-band frequency response without requiring any additional power. Measurements show that the prototype chip draws the same 68 A at 1.8 V as an unmodified design but has a closed-loop frequency response that is ten times greater. The chip was fabricated in a 0.18-m standard CMOS process, and the charge amplifier core occupies 0.042 mm2.
- Subjects :
- Frequency response
Materials science
business.industry
Amplifier
Electrical engineering
Frequency compensation
Power bandwidth
law.invention
CMOS
Hardware_GENERAL
law
Low-power electronics
Hardware_INTEGRATEDCIRCUITS
Operational amplifier
Electrical and Electronic Engineering
business
Charge amplifier
Subjects
Details
- ISSN :
- 15497747
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Circuits and Systems II: Express Briefs
- Accession number :
- edsair.doi...........621ee771721996937cfd71bb7c11a4c0