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A New Structure for a CMOS Audio Power AMP with Extremely Low THD and Low Power Consumption 被引量:1
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作者 曹政新 熊绍珍 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第9期1552-1556,共5页
A new system-corrected CMOS audio power AMP is presented. Consisting of four single-end OPAs,this structure is a pseudo-differential system. Compared to conventional CMOS power AMPs, it has the merits of low power con... A new system-corrected CMOS audio power AMP is presented. Consisting of four single-end OPAs,this structure is a pseudo-differential system. Compared to conventional CMOS power AMPs, it has the merits of low power consumption, extremely low THD,easy compensation, and good driving capability. With 1st silicon 0.25μm 1P4M CMOS technology and a 3V power supply,the output range can be 4Vpp when driving an 8Ω‖ 300pF load, while its power dissipation is less than 3mW. The THD is better than 0. 003% at 1kHz. A new over-current protection circuit, which can effectively protect the power output circuits on the chip, is also demonstrated. 展开更多
关键词 system-corrected structure CMOS power AMP over-current protection
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双极型LDO线性稳压器的设计 被引量:2
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作者 卢艳 辛伟德 《半导体技术》 CAS CSCD 北大核心 2011年第11期871-874,879,共5页
在使用电池供电的产品中,两个很关键的设计就是低漏失电压Vdropout和低静态功耗,Vdropout能保证电池使用效率高,低静态功耗能保证电池使用时间长,LDO线性稳压器也不例外。主要针对这两个特性加上能控制开关和过流过温保护等功能,设计并... 在使用电池供电的产品中,两个很关键的设计就是低漏失电压Vdropout和低静态功耗,Vdropout能保证电池使用效率高,低静态功耗能保证电池使用时间长,LDO线性稳压器也不例外。主要针对这两个特性加上能控制开关和过流过温保护等功能,设计并实现了一款双极型LDO线性稳压器。采用SA-5V工艺中特有的横向pnp管做调整管,使得调整管集电极寄生电阻RC只有10Ω,工艺流片后测试线性调整率为5 mV,负载调整率为14 mV,最大输出电流为30 mA,最小漏失电压为280 mV,在频率为20 Hz~50 kHz输出噪声为80μVRMS,具有良好的应用前景,可适合大规模批量生产。 展开更多
关键词 LDO线性稳压器 低漏失电压 低静态电流 过温过流保护 带隙基准电路
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The Design of the TZ-2 High Voltage Modulator
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作者 WANG Mingwei KANG Zihua HUANG Zhihui RAO Jun LI Bo ZENG Tieliu 《Southwestern Institute of Physics Annual Report》 2006年第1期79-80,共2页
This paper introduces the design of the TZ-2 high voltage modulator for electron cyclotron resonance heating (ECRH) on HL-2A tokamak. The high voltage power supplies (HVPS) for the cyclotron have to operate advant... This paper introduces the design of the TZ-2 high voltage modulator for electron cyclotron resonance heating (ECRH) on HL-2A tokamak. The high voltage power supplies (HVPS) for the cyclotron have to operate advantageously and flexibly, with high stabilization and good insulation to high-voltage. Moreover, the HVPS must carry out the function of protection quickly, for insure the security of people and devices in the experiment on HL-2A. In this year, the HVPS with these modulators satisfies the requirement of the experiment of HL-2A. 展开更多
关键词 High-voltage pulse TETRODE over-current protection
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