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    • 38. 发明授权
    • Operation amplifier circuit having digital driving circuitry and analog driving circuitry
    • 具有数字驱动电路和模拟驱动电路的运算放大器电路
    • US07271661B2
    • 2007-09-18
    • US10908989
    • 2005-06-03
    • Yu-Jui ChangYing-Lieh Chen
    • Yu-Jui ChangYing-Lieh Chen
    • H03F3/68H03F3/217
    • H03F3/217H03F3/211
    • An operational amplifier circuit includes an analog driving circuitry and a digital driving circuitry. The analog driving circuitry is coupled to a load and drives the load according to an input signal. The digital driving circuitry includes a code comparator, a sourcing unit, and a sinking unit. The code comparator compares a reference code with codes corresponding to the input signal and generates a first control signal and a second control signal accordingly. The sourcing unit is coupled to the code comparator and the load, and sources a first current to the load according to the first control signal. The sinking unit is coupled to the code comparator and the load, and sinks a second current from the load according to the second control signal.
    • 运算放大器电路包括模拟驱动电路和数字驱动电路。 模拟驱动电路耦合到负载并根据输入信号驱动负载。 数字驱动电路包括代码比较器,源单元和下沉单元。 代码比较器将参考代码与对应于输入信号的代码进行比较,并相应地产生第一控制信号和第二控制信号。 源单元耦合到代码比较器和负载,并根据第一控制信号向负载发送第一电流。 吸收单元耦合到代码比较器和负载,并根据第二控制信号从负载吸收第二电流。