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qfn hard to ground underneath
Some good advice is already given, but here is how we do it on our prototypes. Assumption is that you have double sided PCB with vias on central pad (usually 5, essential for HF applications):
1. apply small amount of solder on central pad vias on bottom side of...
Uin=3,6....6V
Uout=3,3V (+/-5% or even more..)
Iout=30mA
Iq< 30uA (!!!) at cca 50uA Iout
Has anybody come accross schematic for a simple transistor (or fet) based regulator where no high requirements for output voltage precision is present, but quiscent current is very low? It should have...
Re: Diskless workstation
We use thinstation for years:
**broken link removed**
there is TS-O-MATIC where you can build your set of functions for your client
regards
ADC doubt
Yes,
4 channel ADC should have four input lines for four different analog signals (single ended or differential). But you have to control it's opperation in a way to select which channel to use for a a/d conversion you are going to initiate (ok, there are some smart parts that scan...
We had problem with LDO turn-on stability. It was Zetex part, and power supply impedance was very low (alkaline battery). The propper capacitor value on output of ldo solved the problem (we had to increase it to 1uF from .22).
You have to recheck DS. If no luck, post ldo type, in/out data (load...
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