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| 一种高电源抑制能力低噪声的低压差调节器电路 | |
| 引用本文： | 李新,杨森林,梁洁. 一种高电源抑制能力低噪声的低压差调节器电路[J]. 固体电子学研究与进展, 2012, 32(1): 88-94 |
| 作者姓名： | 李新 杨森林 梁洁 |
| 作者单位： | 1. 沈阳工业大学信息科学与工程学院 沈阳 110870 2. 沈阳工业大学信息科学与工程学院 沈阳 110870;国民技术股份有限公司 研发系统 广东 深圳 518057 3. 国民技术股份有限公司 研发系统 广东 深圳 518057 |
| 摘 要： | 提出了一种高电源抑制能力(PSR)、低噪声的低压差调节器结构。利用电流镜和压控电流源技术,消除一个低频极点,提高LDO系统稳定性。1 kHz时PSR可达到100 dB以上,1 MHz时PSR高于40 dB,最大电流输出能力为150 mA。另外,电路中具有启动电路和限流电路,可以有效地保证电路正常工作。基于TSMC 130 nm低功耗工艺流片,流片结果表明,芯片噪声特性良好。稳定性较高,并具有很高的电源抑制能力,有效地保证了系统指标。 |
| 关 键 词： | 带隙基准 低压差调节器 电源抑制 低噪声 |
A High Power-supply Rejection, Low Noise and Low Voltage Difference Regulator |
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| LI Xin , YANG Senlin , LIANG Jie. A High Power-supply Rejection, Low Noise and Low Voltage Difference Regulator[J]. Research & Progress of Solid State Electronics, 2012, 32(1): 88-94 | |
| Authors: | LI Xin YANG Senlin LIANG Jie |
| Affiliation: | 1School of Information Science and Engineering,Shenyang University of technology,Shenyang,110870,CHN)(2National Technology Ltd.R&D Department,Shenzhen,Guangdong,518057,CHN) |
| Abstract: | A high power-supply rejection,low noise and low voltage difference regulator structure is proposed.The current mirror and the voltage control current source are applied to eliminate a low frequency poles and improve the stability of the system.At 1 kHz PSR rise up to 100 dB,at 1 MHz PSR is higher than 40 dB,and maximum current output is 150 mA.In addition,this circuit includes the start-up circuit and the current limit circuit,so that it can effectively assure normal work. The 130 nm TSMC low power consumption process is adopted,the measurement results show that chip has good noise characteristics,high stability,high power-supply rejection,effectively guarantee the system specifications. |
| Keywords: | band-gap reference low-dropout regulator power-supply rejection low noise |
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