LM34 to A/D

OK, I've got a basic problem. I've got an LM34D (32 - 212 deg F) temp sensor <http://www.national.com/ds/LM/LM34.pdf> and I need to connect it to a 0-10V A/D.

To make things more interesting, I am only looking for a relatively narrow range - say from 50 deg. F to 120 deg. F.

I've got 12 bits of A/D, which, in theory, gives me lots of resolution, but the LN34 is only good to about a degree. It outputs 10 mV/degree.

The way I read the LM34 spec, the range I am interested in is about 500mV to 1.2V, so I figure I need to amplify that by, say, 8 to get good use of my A/D accuracy.

I'm mostly a software guy, although once in a while I can solder something without serious injury.

I've been told I need an op-amp to make the above work, but I have no idea how to get an op-amp to work in the above scenario.

Could someone please clue me in? Thanks,

--Yan
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Relevant Pages

  • Re: LM34 to A/D
    ... I've got 12 bits of A/D, which, in theory, gives me lots of resolution, ... I've been told I need an op-amp to make the above work, ... Why not use an LM71, digital serial SPI temp sensor? ...
    (sci.electronics.design)
  • Re: LM34 to A/D
    ... I've got 12 bits of A/D, which, in theory, gives me lots of resolution, ... I've been told I need an op-amp to make the above work, ... Why not use an LM71, digital serial SPI temp sensor? ...
    (sci.electronics.design)
  • Re: LM34 to A/D
    ... I've got 12 bits of A/D, which, in theory, gives me lots of resolution, ... I've been told I need an op-amp to make the above work, ... Why not use an LM71, digital serial SPI temp sensor? ...
    (sci.electronics.design)
  • Re: LM34 to A/D
    ... I've got 12 bits of A/D, which, in theory, gives me lots of resolution, but the LN34 is only good to about a degree. ... I've been told I need an op-amp to make the above work, but I have no idea how to get an op-amp to work in the above scenario. ... Why not use an LM71, digital serial SPI temp sensor? ...
    (sci.electronics.design)
  • Re: LM34 to A/D
    ... I've got 12 bits of A/D, which, in theory, gives me lots of resolution, but the LN34 is only good to about a degree. ... I've been told I need an op-amp to make the above work, but I have no idea how to get an op-amp to work in the above scenario. ... Why not use an LM71, digital serial SPI temp sensor? ...
    (sci.electronics.design)
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