Patent ID: 8134399

Claim:
A signal transformer, used to transform a level of signal, the signal transformer comprising: two input elements, each of the input elements comprising: an input unit coupled to a first common level and a second common level and receiving an input signal so as to generate a current generating signal and a trigger signal, wherein a level of the input signal is between the first common level and the second common level; an output trigger unit coupled to a third common level and the input unit and generating an output trigger signal according to the trigger signal; and a current generating unit coupled to the input unit and the output trigger unit and comprising a fast current generating element, the fast current generating element generating a current pulse signal according to the current generating signal so as to shorten a transient response time of the output trigger signal generated by the output trigger unit; and an output unit coupled to the third common level and a fourth common level and generating two output signals with opposite phases according to the two output trigger signals of the two output trigger units, wherein levels of the two output signals are between the third common level and the fourth common level.