| ??? 04/28/08 06:28 Read: times |
#154072 - fluctuations in adc0804 output |
in my project, p89c51rd2bn is interfaced with:
1. Stepper motor 2. adc0804 3. lcd (2x16) 4. 4 keys all components are connected with different ports of the controller. Adc0804 is used to convert output of photo-detector(bpw21r) into digital signal. this digital data is then displayed on lcd. Problem: even if the output of photo-detector is not changed, data displayed on lcd changes every time conversion process is started. how to get constant output with constant input? |
| Topic | Author | Date |
| fluctuations in adc0804 output | 01/01/70 00:00 | |
| Things to consider... | 01/01/70 00:00 | |
| circuit diagram and program uploaded | 01/01/70 00:00 | |
| where are the decoupling caps | 01/01/70 00:00 | |
| You have to protect the reference input! | 01/01/70 00:00 | |
| Regarding 0.1 uf capacitor and reference voltage | 01/01/70 00:00 | |
| Considor Following | 01/01/70 00:00 | |
| Zener? | 01/01/70 00:00 | |
| reasons for suggesting zener. | 01/01/70 00:00 | |
and so what? | 01/01/70 00:00 |