Digital Ramp ADC

176

01:46:19

Press the button in the bottom left to start!

Only works to -2.19V. Input voltages must be negative due to inversion at DAC.

Here I have created a Digital Ramp ADC. This is used to convert analogue circuits when speed isn't an issue and/or simplicity is needed. 

The first counter I am using as an SR Latch. This then allows a clock signal to increment a counter, the binary digits coming out of the counter are converted to analogue and compared to the input analogue signal at the top right Op-Amp.

When the counter analogue signal has surpassed the input signal, the counter stops, and you have the binary associated with with that analogue signal.

published 9 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.