对于没有ADC的主控芯片来说，如果要实现ADC的功能，可以用两个GPIO和一个运算放大器解决该问题。对于某些国产芯片来说，其内部没有ADC，所以在有些方案上采用的是PWM电路进行模拟电压的测量。接下来逐步分析一下基本的原理与采集过程。 利用积分电路 ...

Many PWM (pulse-width-modulated) applications, such as Class D audio amplifiers, require symmetric drive circuitry. Comprising complementary N- and P-channel FET devices with gates and sources ...

ADI has launched a precision integrated analogue front end, controller and PWM for battery testing and formation capable of increasing system accuracy and efficiency in lithium-ion battery formation ...