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 ...

Online distributor and design community element14 has teamed up with Microchip and Matrix to introduce the PIC18 Flowcode developers kit. The demonstration kit is designed to offer an entry-level ...

This file type includes high resolution graphics and schematics when applicable. Pulse-width modulation (PWM) is used in applications ranging from controlling valves or pumps to adjusting the ...

Pulse-width modulation (PWM) is used in applications ranging from controlling valves or pumps to adjusting the brightness of LEDs. In this proposed design, a PWM waveform is the basis for an analog-to ...

A variety of analog front-end functions typically assist ADCs to do their jobs. These include instrumentation amplifiers (INA), digitally programmable gain (DPG), and sample and holds (S&H). The ...