Re: System Building Help

In article <fdjloe$36h$1@xxxxxxxxxxxxxxxxx>, Kevin <coolkev@xxxxxx> wrote:
1) What is the sampling input voltage and how many divisions are there?
I mean I don't know if it's 16-bit, 8-bit or anything in between, and
I also don't know the voltage range that's being divided. Is it from 0
to whatever you power it with?

It's built around a Philips (NXP) LPC2000-series chip, and I think most of
those chips have 10-bit ADCs (1024 divisions) and use a voltage reference
supplied on an external pin, nominally 3.3V. It looks like the Logomatic
connects the reference voltage pin to the general 3.3V supply rail supplied
by the on-board voltage regulator.

Sparkfun has a fairly active set of web forums; you might be able to get
in-depth answers there...


--
Wim Lewis <wiml@xxxxxxxx>, Seattle, WA, USA. PGP keyID 27F772C1
.

Relevant Pages

  • Re: [BugTraq] Peter Gutmann data deletion theaory?
    ... Secure Deletion of Data from Magnetic and Solid-State Memory ... amplification would quickly move the voltage ... The question is whether the chip could be powered up ... Dynamic RAM involves a single transistor connecting a single capacitor ...
    (Bugtraq)
  • Re: Sys 80 bootup issue
    ... volts at pin 40 of U1 (I've replaced this chip btw). ... before voltage truly stabilized and the CPU was ready. ... working when my voltage is lower. ... with the lack of logic state data provided I cannot offer any more guesses. ...
    (rec.games.pinball)
  • Re: Sys 80 bootup issue
    ... supply and am now to the cpu board. ... volts at pin 40 of U1 (I've replaced this chip btw). ... trying to get a clock signal on pin 37 of U1. ... working when my voltage is lower. ...
    (rec.games.pinball)
  • Re: P3B-F and S370-Slot-1 converter ?
    ... Again, I suggest you verify the cpu/adapter combination still works on the other board you tested, and that the P3B-F still works with the original P3 750 cpu. ... The fact you get an 'alarm' when you power the system on is a good sign - the board should shut down immediately and completely if it cannot supply the requested CPU voltage - but check the numbers on your VRM chip as Paul suggested, ... regulator suitable for Tualatin processors. ...
    (alt.comp.periphs.mainboard.asus)
  • Re: High brightness white LEDs damaged by custom switcher
    ... you only drive one string of leds. ... In a chip, ... The LEDs are in series, so all see the same current, and the voltage ... I could also add a similar circuit to detect output ...
    (sci.electronics.design)