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.

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带隙基准电压源之所以是模拟电路中重要的模块，是因为它能够提供近似恒定的参考电压，这个电压不随温度，电源电压，工艺的变化而变化。

Bandgap reference voltages are important analog circuit blocks. It can provide a nearly constant reference voltage which is stabilized over process, power supply and temperature variation.

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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.

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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.

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本文分别对系统中各个模块做了介绍，特别介绍了带隙基准电压源和看门狗这两个重点模块。

To reduce the cost, the CMOS process was adopted. This paper introduces each module, especially bandgap and watchdog.

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本文分别对系统中各个模块做了介绍，特别介绍了带隙基准电压源和看门狗这两个重点模块。

To reduce the cost, the CMOS process was adopted. This paper introduces each module, especially bandgap and watchdog.

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