maziar
Full Member level 4
- Joined
- Jun 6, 2001
- Messages
- 195
- Helped
- 5
- Reputation
- 10
- Reaction score
- 1
- Trophy points
- 1,298
- Location
- Islamic republic of Iran
- Activity points
- 1,564
Jensen said:Hi
what's reg. supply be used in your application? Switching power?
If so, try to use a linear reg. to replace it. In this case pls forget the switching power.
By the way, what is the current source of this i/v circuit? A high speed dac? Does it need a lpf to filter the sampling noise?
RTOS51 said:Do not forget the themocouple effects in junctions and connectors that changes with room temperature changes.
Use good ground plane for your pcb,and use seperate analog and digital grounds ,...
Jensen said:100khz sampling rate, why you need 500khz bandwide for i/v converter.
try to reduce bandwide to rejection noise.
maziar said:i think forget: 500khz bandwidth write for sine wave responce for 30% rej.
then if you need pulse responce of settling time this number (5x) is true
1. LM317 REG with .3mvpp noise !(no any noise in Power supply)
2. input of instrument device and dont forget is High speed wave (100khz sampling rate)
shanren said:do you mean you need a high precision op and a faster AD?if so ,you can get ops and AD converters from:
h**p://www.ti.com
h**p://www.linear.com
h**p://www.anolog.com
they also have many app notes.
hope this can help u.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?