On-chip voice-coil motor driver for mobile auto-focus camera applications

Sung Hyun Yang, Sung Min Sohn, Kuk Tae Hong, Hyoung Soo Lee, Bo Ik Sohn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

On-chip voice-coil motor (VCM) driver for mobile auto-focus (AF) camera applications is proposed and integrated into image signal processor (ISP) satisfying small size and low-power consumption. In order to control the location of AF lens, a charge pump (CP) or digital-to-analog converter (DAC) can be selected. Since a large current is required to drive the VCM, the buffer amplifier was inserted after charge pump or DAC. On-chip VCM driver is fabricated using a commercial 0.18μm CMOS technology. As the result, the chip shows the fast speed enough to operate with 30-fps image signal processor and the quiescent current consumption of 0.32-mA.

Original languageEnglish (US)
Title of host publication2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005
PublisherIEEE Computer Society
Pages101-104
Number of pages4
ISBN (Print)0780391624, 9780780391628
DOIs
StatePublished - Jan 1 2005
Externally publishedYes
Event1st IEEE Asian Solid-State Circuits Conference, ASSCC 2005 - Hsinchu, Taiwan, Province of China
Duration: Nov 1 2005Nov 3 2005

Publication series

Name2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005

Conference

Conference1st IEEE Asian Solid-State Circuits Conference, ASSCC 2005
CountryTaiwan, Province of China
CityHsinchu
Period11/1/0511/3/05

Fingerprint

Cameras
Digital to analog conversion
Buffer amplifiers
Pumps
Lenses
Electric power utilization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Yang, S. H., Sohn, S. M., Hong, K. T., Lee, H. S., & Sohn, B. I. (2005). On-chip voice-coil motor driver for mobile auto-focus camera applications. In 2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005 (pp. 101-104). [4017541] (2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005). IEEE Computer Society. https://doi.org/10.1109/ASSCC.2005.251817

On-chip voice-coil motor driver for mobile auto-focus camera applications. / Yang, Sung Hyun; Sohn, Sung Min; Hong, Kuk Tae; Lee, Hyoung Soo; Sohn, Bo Ik.

2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005. IEEE Computer Society, 2005. p. 101-104 4017541 (2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yang, SH, Sohn, SM, Hong, KT, Lee, HS & Sohn, BI 2005, On-chip voice-coil motor driver for mobile auto-focus camera applications. in 2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005., 4017541, 2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005, IEEE Computer Society, pp. 101-104, 1st IEEE Asian Solid-State Circuits Conference, ASSCC 2005, Hsinchu, Taiwan, Province of China, 11/1/05. https://doi.org/10.1109/ASSCC.2005.251817
Yang SH, Sohn SM, Hong KT, Lee HS, Sohn BI. On-chip voice-coil motor driver for mobile auto-focus camera applications. In 2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005. IEEE Computer Society. 2005. p. 101-104. 4017541. (2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005). https://doi.org/10.1109/ASSCC.2005.251817
Yang, Sung Hyun ; Sohn, Sung Min ; Hong, Kuk Tae ; Lee, Hyoung Soo ; Sohn, Bo Ik. / On-chip voice-coil motor driver for mobile auto-focus camera applications. 2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005. IEEE Computer Society, 2005. pp. 101-104 (2005 IEEE Asian Solid-State Circuits Conference, ASSCC 2005).
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