Datasheets are the primary documentation about components, describing their functionality and electrical properties.
29
votes
3answers
2k views
What's this importance of datasheets?
As someone starting with electronics I keep hearing, "Check the datasheet!"
Why are datasheets so important and what information can I expect to find in them? It seems like a large amount of ...
15
votes
3answers
2k views
What does 3V3 or 1V8 mean
While reading a datasheet for an IC i came across the pin voltages being presented as 3V3 or 1V8. What does this representation stand for ?
5
votes
2answers
992 views
How do I read a datasheet for a solid state relay?
I'm looking to use several (12-18) solid state relays to control a set of water valves (24V AC solenoids, 20ma holding current, 40ma inrush current), and I'm having trouble finding suitable parts, ...
10
votes
4answers
456 views
How reliable are application notes
My last question brought up some discussion about application notes and (bad?) practice. See the comments under the various answers.
Until now I thought: "Ok these application notes are written by ...
13
votes
2answers
865 views
Noise and what does V/√Hz actually mean?
Noise figures in (opamp) datasheets are in expressed in V/√Hz, but
Where does this unit come from, why the square root? and how should I pronounce it?
How should I interpret it?
I know lower is ...
7
votes
6answers
2k views
what is “input hysteresis”?
I'm looking at a datasheet for a digital circuit and it specifies that the typical input hysteresis is 100 mV. What does this mean exactly?
5
votes
2answers
161 views
What is the meaning of the nominal frequency specified by manufacturers of crystals?
This answer led to the conclusion that it is unclear what the meaning of the frequency listed by crystal manufacturers actually means.
Given this graph on page 79 of this ECS Crystals Application ...
4
votes
5answers
1k views
What does BSC SQ mean?
I'm reading this DAC datasheet. The last page (p. 32) gives certain of the chip's dimensions, some in units of "BSC SQ".
What does BSC SQ mean? Is it standard to express sizes in BSC SQ?
4
votes
2answers
169 views
“31WOC” on a boost converter, but what datasheet goes with it?
Long shot, I know...
I have this Boost convert 1-5V in out 5.1-5.2V and I hope to modify it for a different output voltage.
So I'm trying to identify and find the datasheet for the main chip.
I ...
4
votes
2answers
3k views
Real maximum current for ATmega328?
Everything I read says that the ATmega328 can provide 40mA per pin. However when I've measured the actual current provided by one pin it was showing 80mA. It was the same on every pin I tested. Anyone ...
2
votes
1answer
50 views
Multiple lengths in DAC datasheet
The last page of this DAC datasheet gives dimensions of the chip:
Some of these dimensions come is 3-tuples (such as the pin width: 0.30 | 0.37 | 0.45). What ...
2
votes
2answers
320 views
Magnetic door lock
I'm looking at buying an AEM10010 magnetic door lock (see page 4 of datasheet), but can't figure out how they're driven. The datasheet doesn't say anything about how to connect them, nor does it ...
2
votes
2answers
187 views
LCD Module Datasheet Or Other Info
So I came across this LCD module the other day. The only obvious writing on it is SOLOMON. After typing in every number I could find on it I finally came across this mention online: ...
0
votes
1answer
74 views
Are there datasheets for this dataflash memory?
It's hard to read what is written on this dataflash memory but it looks like 25p80vg. I searched for datasheets and found some things similar to it, but couldn't find anything that matched it exactly. ...
