A Multi-Channel Gamma Voltage Generator Using Transient-Enhanced Buffer for High-Resolution LCoS Driver IC
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作者
Yang, Chenghe; Feng, Yingqi; Yang, Wenyu; Zhang, Junkai; Tian, Li; Wang, Hui; Huang, Zunkai
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刊物名称
IEICE ELECTRONICS EXPRESS
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年、卷、文献号
2024, 21,
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关键词
Yang, Chenghe; Feng, Yingqi; Yang, Wenyu; Zhang, Junkai; Tian, Li; Wang, Hui; Huang, Zunkai
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摘要
This paper introduces a multi-channel programmable gamma voltage generator. Based on the characteristics of the gamma curve, the gamma correction system applies a two-stage adjustment and a three-region output structure. The proposed programmable preset circuit allows the chip to deliver a programmable initial gamma. By integrating a transient enhancement circuit into the Class AB buffer, the amplifier achieves improvements of 27.8%/30.7% in undershoot/overshoot voltages, respectively. It also features a slew rate of 13.4 V/mu s, a 0.1% settling time of 0.62 mu s, and a DC gain of 138 dB.
