| ??? 09/19/06 17:48 Modified: 09/19/06 17:49 Read: times |
#124596 - get the most expensive amplifier you can get Responding to: ???'s previous message |
I worked for a major scale manufacturer and for those 600.000 economy scales we used a chopper stabilized op-amp, nothing less (cheaper) would do.
There may be op-amps without chopper stabilization that does well enough today (technology does advance) but you need (virtual) zero drift and offset. If you try to 'get by' with a cheap amp you will never get it to work reliably. Of course, if the app is "is this more than somewhere between 4 and 10 kg" you can get by with less. Erik PS do not fall in the trap of confusing resolution with precision |
| Topic | Author | Date |
| Load cell interface | 01/01/70 00:00 | |
| get the most expensive amplifier you can get | 01/01/70 00:00 | |
| Check. | 01/01/70 00:00 | |
| Search | 01/01/70 00:00 | |
| Details?? | 01/01/70 00:00 | |
| Detail of ADUC814 | 01/01/70 00:00 | |
| Try analog.com | 01/01/70 00:00 | |
| Suited? | 01/01/70 00:00 | |
| changed | 01/01/70 00:00 | |
Repeat | 01/01/70 00:00 | |
| ADC | 01/01/70 00:00 | |
| why? | 01/01/70 00:00 | |
| I see an endless guessing... | 01/01/70 00:00 | |
| I put it in another group | 01/01/70 00:00 | |
| Fried Pigeon... I hear it tastes like chicken ;) | 01/01/70 00:00 | |
| No i am not | 01/01/70 00:00 | |
| ADC | 01/01/70 00:00 | |
| If so, why didn\'t you... | 01/01/70 00:00 | |
| the level of effort is different | 01/01/70 00:00 |