As we all know, with the development of chips, a 12-inch wafer is almost worth every inch of land, and a chip the size of a fingernail is worth hundreds or even thousands of yuan. Converted into the s...
Serial communicationPCBA1 and PCBA2 are connected via serial communication. There are four wires, namely 4.2V from PCBA1 charging IC (to charge the lithium battery of PCBA2), GND, TX, and RX.The appli...
[size=4] When we choose and buy a quartz crystal oscillator, or when we look at the crystal oscillator specification provided by the manufacturer, there will be an indicator of output mode (Output Typ...
[i=s]This post was last edited by Xinjiang Little Watermelon on 2021-6-22 12:18[/i]First of all, I would like to thank EEWORLD for providing a communication platform. I have been feeling depressed rec...
Digital low-IF To solve the above problems, an isolated digital low intermediate frequency is used. As shown in Figure 3, it still ensures its high integration; there is also no intermediate frequency...