A novel trimming circuit based on D type flip-flop

A design of trimming circuit which based on D type flip-flop is proposed in this paper. The circuit generates trimming code by using a code generating module, a control signals generating module, a code saving and output module.ft uses the self -feedback signal to close the aforementioned module while saving the required trimming code to achieve ltra-low power consumption. Based on the 0.35 mu m BCD process platform, the proposed circuit is used for a current ence circuit. The results show that the current varies 1.011uA to 1.04911A at -50 similar to 175 degrees C for the full process corner (243 process corners).The whole power consumption of the circuit is 1 mu A.