低功率电路设计技术——微功率运算放大器设计与工艺

• 作 者: 益民
• 出 处: 微电子学
• 发表日期: 1972年Z1期
• 关键词: 运算放大器 微功率 集电极电流 功率 晶体管 双极晶体管 电路设计技术 基区 噪声 电流

一、引言本文讨论低功率双极晶体管电路的设计,介绍在小集电极电流下工作的晶体管设计及使用这种晶体管的增益所要求的电阻工艺,并将给出此种电路的设计例子——微功率运算放大器。关于数字电路的低功率设计例子已在文献中介绍过。运算放大器微功率工作的主要优点是:低功耗,低发热,输入电流小,输入失调电流小,输入电流噪声低,输入失调电压小及输入阻抗高。低功耗的优越性是十分明显的。当制造功能越来越复杂的电路时,低发热的优点就

I. INTRODUCTION This article discusses the design of low-power bipolar transistor circuits, the design of transistors that operate at small collector currents, and the resistance process that is required to use this transistor’s gain. A design example for such a circuit is given - Micropower Op Amps. Low-power design examples of digital circuits have been introduced in the literature. The main advantages of op amp micropower operation are: low power consumption, low heat, small input current, small input offset current, low input current noise, small input offset voltage and high input impedance. The advantages of low power consumption is very obvious. The advantage of low heat generation is when manufacturing more and more complex circuits