SEMICONDUCTOR INTEGRATED CIRCUITS
Abstract: To drive the backplane of a liquid crystal display device and achieve different kinds of grey levels, a high-slew-rate operational amplifier with constant-gm input stage is presented. A Zener-diode structure is inserted between the tails of the complementary input pairs to keep the gm of the input stage constant. A novel slew rate enhancement circuit is implemented to achieve a very high slew rate. The chip has been implemented in a 0.5 μm CMOS process and the chip area of the operational amplifier circuit is 0.11 mm2. The testing results indicate that in the 5–8 V input range, the maximum gm fluctuation is only 4.2%. The result exhibits a high slew rate of 111 V/ s and 102 V/ s for the rising and falling edges under a 20 pF capacitance load, and the low frequency gain is up to 109 dB with a phase margin of 70 ℃.
Key words: constant-gm, operational amplifier, Zener diode, slew rate
| 1 |
Hot electron effects on the operation of potential well barrier diodes M. Akura, G. Dunn, M. Missous Journal of Semiconductors, 2019, 40(12): 122101. doi: 10.1088/1674-4926/40/12/122101 |
| 2 |
Min Qi, Quan Sun, Donghai Qiao Journal of Semiconductors, 2018, 39(10): 105001. doi: 10.1088/1674-4926/39/10/105001 |
| 3 |
An ultra-low power output capacitor-less low-dropout regulator with slew-rate-enhanced circuit Xin Cheng, Yu Zhang, Guangjun Xie, Yizhong Yang, Zhang Zhang, et al. Journal of Semiconductors, 2018, 39(3): 035002. doi: 10.1088/1674-4926/39/3/035002 |
| 4 |
Design and analysis of 20 Gb/s inductorless limiting amplifier in 65 nm CMOS technology Rui He, Jianfei Xu, Na Yan, Jie Sun, Liqian Bian, et al. Journal of Semiconductors, 2014, 35(10): 105002. doi: 10.1088/1674-4926/35/10/105002 |
| 5 |
A 10 MHz ripple-based on-time controlled buck converter with dual ripple compensation Danzhu Lü, Jiale Yu, Zhiliang Hong Journal of Semiconductors, 2013, 34(2): 025005. doi: 10.1088/1674-4926/34/2/025005 |
| 6 |
Criteria for versatile GaN MOVPE tool: high growth rate GaN by atmosphericpressure growth Koh Matsumoto, Kazutada Ikenaga, Jun Yamamoto, Kazuki Naito, Yoshiki Yano, et al. Journal of Semiconductors, 2011, 32(1): 013003. doi: 10.1088/1674-4926/32/1/013003 |
| 7 |
A 3.125-Gb/s inductorless transimpedance amplifier for optical communication in 0.35 μm CMOS Xu Hui, Feng Jun, Liu Quan, Li Wei Journal of Semiconductors, 2011, 32(10): 105003. doi: 10.1088/1674-4926/32/10/105003 |
| 8 |
Lei Qianqian, Lin Min, Chen Zhiming, Shi Yin Journal of Semiconductors, 2011, 32(4): 045006. doi: 10.1088/1674-4926/32/4/045006 |
| 9 |
An 8-bit 100-MS/s pipelined ADC without dedicated sample-and-hold amplifier Zhang Zhang, Yuan Yudan, Guo Yawei, Cheng Xu, Zeng Xiaoyang, et al. Journal of Semiconductors, 2010, 31(7): 075006. doi: 10.1088/1674-4926/31/7/075006 |
| 10 |
Zhang Xuelian, Yan Jun, Shi Yin, Dai Fa Foster Journal of Semiconductors, 2009, 30(1): 015008. doi: 10.1088/1674-4926/30/1/015008 |
| 11 |
1-Gb/s zero-pole cancellation CMOS transimpedance amplifier for Gigabit Ethernet applications Huang Beiju, Zhang Xu, Chen Hongda Journal of Semiconductors, 2009, 30(10): 105005. doi: 10.1088/1674-4926/30/10/105005 |
| 12 |
A novel low-voltage operational amplifier for low-power pipelined ADCs Fan Mingjun, Ren Junyan, Guo Yao, Li Ning, Ye Fan, et al. Journal of Semiconductors, 2009, 30(1): 015009. doi: 10.1088/1674-4926/30/1/015009 |
| 13 |
Annealing behavior of radiation damage in JFET-input operational amplifiers Zheng Yuzhan, Lu Wu, Ren Diyuan, Wang Yiyuan, Guo Qi, et al. Journal of Semiconductors, 2009, 30(5): 055001. doi: 10.1088/1674-4926/30/5/055001 |
| 14 |
A novel fully differential telescopic operational transconductance amplifier Li Tianwang, Ye Bo, Jiang Jinguang Journal of Semiconductors, 2009, 30(8): 085002. doi: 10.1088/1674-4926/30/8/085002 |
| 15 |
A Novel Operational Amplifier Phase Reversal Protection Circuit Wang Xihu, Wu Longsheng, Liu Youbao Journal of Semiconductors, 2008, 29(9): 1832-1836. |
| 16 |
A Three-Stage Operational Amplifier for a Wide Range of Capacitive Loads Hu Jingjing, Huijsing J H, Ren Junyan Chinese Journal of Semiconductors , 2007, 28(11): 1685-1689. |
| 17 |
A 12-Channel,30Gb/s,0.18μm CMOS Front-End Amplifier for Parallel Optic-Fiber Receivers Li Zhiqun, Xue Zhaofeng, Wang Zhigong, Feng Jun Chinese Journal of Semiconductors , 2006, 27(1): 47-53. |
| 18 |
Transport Properties of Two Coupled Quantum Dots Under Optical Pumping Ge Chuannan, Wen Jun, Peng Ju, Wang Baigeng Chinese Journal of Semiconductors , 2006, 27(4): 598-603. |
| 19 |
A Wide-Band Low Noise Amplifier for Terrestrial and Cable Receptions Ma Desheng, Shi Yin, Dai Fa Foster Chinese Journal of Semiconductors , 2006, 27(6): 970-975. |
| 20 |
Zhang Wei, Zhu Lian, Sun Qingqing, Lu Hongliang, Ding Shijin, et al. Chinese Journal of Semiconductors , 2006, 27(3): 429-433. |
Article views: 5782 Times PDF downloads: 4764 Times Cited by: 0 Times
Received: 18 August 2015 Revised: 13 July 2009 Online: Published: 01 December 2009
| Citation: |
Lai Xinquan, Li Xinlin, Ye Qiang, Yuan Bing, Li Xianrui. A constant-gm and high-slew-rate operational amplifier for an LCD driver[J]. Journal of Semiconductors, 2009, 30(12): 125002. doi: 10.1088/1674-4926/30/12/125002
****
Lai X Q, Li X L, Ye Q, Yuan B, Li X R. A constant-gm and high-slew-rate operational amplifier for an LCD driver[J]. J. Semicond., 2009, 30(12): 125002. doi: 10.1088/1674-4926/30/12/125002.
|
WeChat ID
Journal of Semiconductors © 2017 All Rights Reserved 京ICP备05085259号-2
DownLoad: