Ok, I see what you are suggesting. The problem is that I would not be allowed to use the AD7742 chip to get to that point. If I could perform the same function using TTL chips, then I could implement that process. I may be allowed to provide a dual switch between integrating other signals and...
I started why the same difference equation and process for digital integration. The process (accumulator) works great mathematically for inputs such as a constant, ramp signal, bipolar pulse signal. When I evaluated it using a sine input, the adding did not produce a -cosine. It produced an...
Thanks for the idea, but it looks like the VFC performs the integration for me. Unfortunately I need to perform the integration process using only discrete TTL chips from a binary stream from a voltage to voltage A/D. That is where I am stuck. In order to get minus cosine from the values...
I only have to integrate 8 bits and my input to the D/A can be larger than 8 bits. I have freedom to input the signal at a slow frequency. The A/D requires about 20 to 30uS to process a slice of the signal, depending on my final choice. I have not decided on the slice interval I want to...
I can use twos complement from the A/D to handle negative numbers. The A/D handles bipolar input with 8 bit excess 127 binary output. I will be converting that to two's complement.
I need to design a digital circuit using TTL chips (adders, registers, etc.) to perform integration on binary values. The binary values are converted from analog signals such as a sine wave, constant, square pulse, and saw tooth. I can achieve the process for constants and positive signals...