Abstract-A design of low-power voltage detector (VD) based
on current comparison technology is presented. This VD samples
the power supply voltage and converts the sampled voltage to a
current which will be compared with a reference. The current
comparison technology simplifies the design without use of the
resistor string and voltage comparators, and thus reduces the
core area. The VD detects three thresholds successively while
keeping only one detecting portion working at a time to minimize
power consumption. The VD is designed and realized in a
standard 40nm process. The measurement result agrees well with
designed parameters with 30 variations less than 100m V.
Meanwhile, the power consumption keeps lower than lO/lW.