摘要
介绍了ICL7650 CMOS斩波集成运算放大结构和性能,输入级使用MOS场效应管,采用斩波自动稳零结构,附带调制和解调等措施,具有输入偏置电流小,低失调电压和温度漂移以及精密的反馈特性和高的共模抑制比能力。并采用该器件实现了一个积分电路,该电路零位可以调整,抑制干扰,降低噪声,是很好的传感器信号预处理电路。
The structure and capability of ICL7650 -CMOS chop operational amplifier is introduced in this paper. The MOS is used in the in - port and the auto - zero structure is adopted in chop. The amplifier has additional modulation and demodulation,and has the advantage of smaU input bias current, low maladjustment voltage and temperature excursion, exact feedback speciality and high common mode control ratio. An integral circuitry is implemented by the amplifier. The circuitry zero can be adjusted,the disturbance can be controUed,the noise can be reduced. It is better preprocess circuitry for sensor signal.
出处
《现代电子技术》
2006年第12期19-20,共2页
Modern Electronics Technique
