Hawaslsh
Full Member level 3
- Joined
- Mar 13, 2015
- Messages
- 164
- Helped
- 5
- Reputation
- 10
- Reaction score
- 7
- Trophy points
- 1,298
- Location
- Washington DC, USA
- Activity points
- 3,422
If you connect both signal ground and power ground right at the power supply common, that will minimize this problem.
If you intend to export a net list to a Pcb package keep in mind that the net list will make no distinction between the two grounds; it’s going to combine them into a single net.
Sorry if I'm being a pain,
I thought this was the strategy you just recommend? GND in that schematic refers to the common of the DC supply, not necessary earth ground.
"If you connect both signal ground and power ground right at the power supply common, that will minimize this problem."
Makes no sense. Power supply current is specified to be max. 6uA per device.500mW @ 4.3V is ~117mA
there is not a single power supply decoupling capacitor! --> add a bulk capacitor per rail and a ceramics capacitor at each power supply pin of each IC. ... then there are some parts more connected to the DC common connection. Klaus
I wish. Its only been tested on a breadboard. It yielded fairly comparable results to a commercial grade lock-in amp, but the signal fidelity and reliability left A LOT to be desired. Since getting a two layer board is so cheap, figured, might as well give it a go and see.Maybe you simulated this circuit without problems....
100nF X7Rwhats a good rule of thumb, X uF across each device?
GND is your reference for the power supplies, thus this is also the reference for your power supply capacitors.This may be a silly question, but just double checking. For the amps which are supplied +15 and -15. The caps would go to the common reference: +15 to common, and not across +15 to -15?
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?