mixed signal

Left side = electrode input, that goes into an electro discharge protection ic then into the resistor arrays then into the capacitor arrays then into the ads 1299. Right side = Female input pins that connect to the spi lines of the ads1299 and dvdd power. I will plug in an esp32 dev board with...

Attached below are images of a 2-layer PCB layout I am currently designing. I have always had the habit of removing the ground plane underneath AC signals, but a more experienced PCB designer advised me that the removal of the ground plane should only be done near the connectors and high-power...

Hello everyone, I have issue understanding two conclusion made byDr. Baker in his mixed signal books as shown in page 35 and 36. 1- how can using the convulution yield from euation 2.8 to 2.9 . I applied the convultion to it and I get double summation and not as in equation 2.9! 2-the equation...

Hello, I am new to the amplifier designer. In my demodulator circuit, I have designed CS amplifier to shift the DC level of the modulated signal [attached]. Although I got my desired result, but when I decrease the gain of the amplifier by changing the load resistor then I got an irregular...

Hi I am trying to acquire GPS data and transmit it through an existing RF circuit. The circuit uses frequency multiplication to transmit audio input at 152 - 170 MHz bandwidth. Is it possible to convert GPS data into analog using DAC and feed it into the frequency multiplier circuit? Since the...

Hey all! I'm trying to build an LED frequency counter. My input signal is an LED I'm using as a detector recieving from an output LED on my signal generator. I'm using square wave output to emulate pwm and my circuitry is going to process the signal to output a 5v logic output that can be read...