[volt-nuts] Homebrew DVM

Andreas Jahn Andreas_-_Jahn at t-online.de
Thu Nov 10 22:48:10 UTC 2011


Hello MK,

did you already build a real cirquit with the LTC2440?
It has a differential input 2.5+/-2.5V for bridge measurement cirquits like 
weight scales.
So I think it will be difficult to get a unipolar 0..5V measurement out of 
this device without resistive divider.

Which buffer cirquits do you use to feed the low-impedant (capacitive) 
inputs?

With best regards

Andreas

----- Original Message ----- 
From: "m k" <m1k3k1 at hotmail.com>
To: <volt-nuts at febo.com>
Sent: Thursday, November 10, 2011 10:50 PM
Subject: Re: [volt-nuts] Homebrew DVM


>
> Hi Rob,
> It was the LTC 2440 and 2442.
>
>> Date: Thu, 10 Nov 2011 22:36:10 +0100
>> From: rob.klein at smalldesign.nl
>> To: volt-nuts at febo.com
>> Subject: Re: [volt-nuts] Homebrew DVM
>>
>> Op 10-11-2011 20:39, m k schreef:
>> > Hi Rob, Try the LTC2441
>>
>> Ehm, a search on LTC's website for "LTC2441" returns this:
>>
>> Your search - *ltc2441* - did not match any documents.
>> No pages were found containing *"ltc2441"*.
>>
>> No 8.5Hz, 26-bit converter shows up in the parametric search, either.
>>
>>
>> - Rob.
>>
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