偏置电流源电路的设计:利用带隙基准电压源提供的,通过运算放大器为系统其他的模块提供一个与温度无关的稳定的电流偏置。
The current bias design: Taking advantage of the bandgap reference voltage, the temperature independent current bias for the system is designed by an operation amplifier.
在测量高电阻源时要考虑的另一个问题是电压表的输入偏置电流。
Another consideration when measuring voltages from high resistance sources is the input bias current of the voltmeter.
虽然输入偏置电流是这种误差的常见来源,但是外电路产生的电流在源电阻上形成的电压降也能引起误差。
Although input bias current is a common source of this type of error, currents generated by external circuits can also result in errors due to voltage drops across the source resistance.
如图2 - 2所示,输入偏置电流(IBIAS)在源电阻(RS)上产生了误差电压。
As shown in Figure 2-2, the input bias current (IBIAS) develops an error voltage across the source resistance (RS).
如图2 -18所示,外部偏置电流也加到源电流上,仪表显示的也是这二者之和。
As shown in Figure 2-18, the external offset current also adds to the source current, and the meter again measures the sum of the two.
其设计特点是采用了共源共栅电流镜,运放的输出作为驱动的同时还作为自身的偏置电路;其次是采用了带隙温度补偿技术。
The cascade current mirror was used in the circuit, and the output of the OPAMP was used for the bias of itself and to drive the next stage.
电路运用带隙温度补偿技术,采用共源共栅电流镜,两级运放输出用于自身偏置电路。
The technology of temperature compensation and cascade current mirror was used, and the output of two stage amplifier was used for the bias of itself.
基准源作为其中关键模块之一,不仅需要为系统提供精准的偏置电压和偏置电流,差分基准源还将为其提供比较电平和残差电压,它的性能将直接影响到系统指标。
Reference is the key part of ADC, not only providing the bias voltage and current for the system but also playing the part of the compared voltage and subtracted voltage.
基准源模块广泛的应用于模拟和混合电路中,如A/D、D/A转换器,电压调谐器,电压表,电流表等测试仪器以及偏置电路。
Reference sources are widely used in analog and mix-mode circuits, such as A/D, D/A converters, voltage regulators, measurements, instrumentation circuits, and bias circuits.
可以使用能够自动改变极性的电流源来修正偏置。
A current source that can automatically change polarity can be used to correct for offsets.
因此介绍了一种采用自偏置低压共源共栅电流源的带隙基准电路结构,用两个电阻代替了偏置电路。
This paper introduces a low supply voltage band -gap reference circuit which used a self-bias cascode current mirror.
由偏置在AB类的电流驱动的共源放大器构成输出级;
A current-driven common source amplifier which is biased on class AB constitute the output stage.
由偏置在AB类的电流驱动的共源放大器构成输出级;
A current-driven common source amplifier which is biased on class AB constitute the output stage.
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