Reference voltage generator having noise cancelling function and CMOS image sensor using the same

摘要

The reference voltage generator may include a reference current generation unit suitable for generating a reference current based on a first power supply voltage and a first ground voltage, a current amount adjustment unit suitable for adjusting a current amount of the reference current generated by the reference current generation unit based on a second power supply voltage and a second ground voltage, and a reference voltage generation unit suitable for generating a reference voltage corresponding to the reference current, of which the current amount is adjusted by the current amount adjustment unit, based on the first power supply voltage and the first ground voltage.