A 0.9 V PSRR improved voltage reference using a wide-band cascaded current mode differentiator  

作　　者：Fanyang Li 

机构地区：[1]Fuzhou University,Fuzhou 310002,China

出　　处：《Journal of Semiconductors》2018年第10期75-81,共7页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.61501122)

摘　　要：We present a voltage reference using a wide-band cascaded current mode differentiator, for the improved PSRR performance. Compared with the conventional references, the reference with the technique is mainly characterized by a two cascaded stages current mode signal differentiator. In the differentiator, a zero OTA G_m is proposed, to achieve the wide-band differential characteristic. With the technique, the PSRR beyond the pole＇s corresponding frequency can be significantly improved with the minimum supply voltage only about V_（GS_PMOS） ＋（V_（GS_NMOS-VTH））. Fabricated with a 0.18 μm CMOS process, with the 0.9 V supply voltage, the PSRR @ 20 MHz of the reference is achieved at-54 dB. Moreover, the power dissipation is 19 μW.We present a voltage reference using a wide-band cascaded current mode differentiator, for the improved PSRR performance. Compared with the conventional references, the reference with the technique is mainly characterized by a two cascaded stages current mode signal differentiator. In the differentiator, a zero OTA G_m is proposed, to achieve the wide-band differential characteristic. With the technique, the PSRR beyond the pole＇s corresponding frequency can be significantly improved with the minimum supply voltage only about V_（GS_PMOS） ＋（V_（GS_NMOS-VTH））. Fabricated with a 0.18 μm CMOS process, with the 0.9 V supply voltage, the PSRR @ 20 MHz of the reference is achieved at-54 dB. Moreover, the power dissipation is 19 μW.

关 键 词：REFERENCE current mode DIFFERENTIATOR 

分 类 号：TM46[电气工程—电器]