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- Bien, Franklin
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A 20V Driving Signal Generator utilizing Open-loop Class D Amplifier for Mutual Capacitive Fingerprint Sensor in 0.25-um BCDMOS Technology
- Author(s)
- Choi, Eunho, Park, Kyungmin, Bien, Franklin
- Issued Date
- 2017-02-15
- Citation
- International Conference on Green and Human Information Technology (ICGHIT 2017)
- Abstract
- This paper proposed a high-voltage generator using Class D Amplifier(CDA) for mutual capacitive fingerprint sensor, in order to enhance fingerprint resolution by easily detecting capacitance difference from ridge and valley touched on TSP. The high-voltage generator, fabricated in 0.25-um BCDMOS process, consists of 42 identical channels. The input frequency, VDD and VDDH are 1MHz, 5V and 20V respectively. The voltage output of CDA on filterless condition is 0- 20V pulse wave. The simulated output voltage is 20V peak-topeak sine wave.
- Publisher
- IEIE & IEEE
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