CN855X is a zero drift high-accuracy operational amplifier, with a power supply voltage range of 1.8V to 5.5V. The input offset voltage Vos is as low as 1uV, and the offset voltage temperature drift coefficient is as low as 0.005uV/℃, which is the best level in the industry. CN8551 is a point channel operational amplifier, CN8552 is a dual channel operational amplifier, and CN8554 is a four channel operational amplifier. Among them, CN8551S and CN8552S are operational amplifiers with enable shutdown function. The product includes various packaging types such as SOT/SOP/MSOP/TSOP/DFN, and is widely used in medical equipment, robotics, instrumentation, industrial control, precision sensors, and other fields.