关键词: 延时单元, 温漂, 带隙基准, LDO

Abstract: In the paper, a design reducing the delay temperature drift of digital clock delay-cellis described, which includes a Bandgap reference voltage(VREF) generator having a positive temperature coefficient, a LDO which receives the VREF and power the delay line. The delay line contains a series of delay-cells and used for shift the clock phase. By a positive temperature coefficient of Bandgap designed, the delay-cell power voltage will change same direction with temperature, which compensates the delay variation of delay-cell caused by the changed temperature.

Key words: delay-cell, temperature drift, bandgap, LDO