R
[email protected]
- Jan 1, 1970
- 0
I want to read a voltage on a ADC that only accept 0-5V. My input
signal is 12Vp-p (-6 to 6). I simulate this circuit and it work. I
have 0 to 4.45V on Vout. My question is, do this circuit can easely
induce noise in my VCC. Or this only depend on how I will layout my
component on the PCB? Using a op-amp in differential is more safe than
this? My signal is 20 KHz.
(Use courrier new)
R1 - 1.2K
-----------/\/\/\/\----------------o Vout (go to ADC)
| |
| |
| |
| \
------ /
|sin(x)| \ R2 - 1K
------ /
| \
| /
| |
| |
| |
| ------- 5V
| ---
| |
| |
|-----------------------------
signal is 12Vp-p (-6 to 6). I simulate this circuit and it work. I
have 0 to 4.45V on Vout. My question is, do this circuit can easely
induce noise in my VCC. Or this only depend on how I will layout my
component on the PCB? Using a op-amp in differential is more safe than
this? My signal is 20 KHz.
(Use courrier new)
R1 - 1.2K
-----------/\/\/\/\----------------o Vout (go to ADC)
| |
| |
| |
| \
------ /
|sin(x)| \ R2 - 1K
------ /
| \
| /
| |
| |
| |
| ------- 5V
| ---
| |
| |
|-----------------------------