← 返回 JSSC 论文列表JSSC 2007第4期Power Management0.25μm BiCMOSPower Amplifier
A 0.5-V 1-Msps Track-and-Hold Circuit With 60-dB SNDR
提出一种0.5V电源电压下工作的1Msps采样保持电路,实现60dB SNDR。
0.5V, 1Msps, 60dB SNDR, 600μA
超低电压采样保持电路SNDRCMOSBiCMOS工艺
▸创新点1:方法创新 - 采用真正的低电压设计技术,实现了0.5V超低电源电压工作,突破了传统T/H电路对高电源电压的依赖,显著降低了功耗。
▸创新点2:电路创新 - 在标准0.6V器件的基础上,通过优化电路结构和参数,实现了无时钟/电压提升技术,简化了电路设计并提高了可靠性。
▸创新点3:系统创新 - 在0.25μm BiCMOS工艺的CMOS部分中实现了全差分T/H电路,展示了在低电压条件下仍能保持60dB SNDR的高性能,为低功耗高精度应用提供了新方案。
▸创新点4:性能创新 - 该T/H电路在1Msps采样率下仅消耗600μA电流,实现了高采样率与低功耗的良好平衡,适用于便携式和电池供电设备。
Abstract
We discuss a design technique that makes possible the
operation of track-and-hold (T/H) circuits with very low supply
voltages, down to 0.5 V. A 0.5-V 1-Msps T/H circuit with a 60-dB
SNDR is presented. The fully differential circuit is fabricated in the
CMOS part of a 0.25-
m BiCMOS process, with standard 0.6-V
devices, and uses true low-voltage design techniques with no
clock boosting and no voltage boosting. The T/H circuit has a mea-
sured current consumption of 600
A.