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A/D Converters — Parallax Forums

A/D Converters

ArchiverArchiver Posts: 46,084
edited 2002-04-06 19:31 in General Discussion
Hello Everyone:

I am looking for an A/D converter that has the
following characteristics:

a. can sample a waveform every 200 microseconds or so
(speed not important here)
b. a sample time of less than 1 microsecond (speed
needed here)
c. serial output (8 or 12 bit)
d. dip pin compatible (for prototyping/breadboarding)
e. single channel, 5VDC unipolar power supply

I have checked out the linear technologies website
without a whole lot of success - unless I want to go
to an surface mount chip and this would make
prototyping and breadboarding really "fun". Anyone
have any ideas, thoughts, suggestions or alternative
suppliers?

Thanks.

Gerry Shand
gshand@h...


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Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-04-01 17:13
    For Gerry

    Take a look at Texas Instruments TLC2543.

    Sid


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2002-04-01 19:44
    Maxim MAX187, 12 bits, single channel, built-in reference.

    Dennis
    Original Message
    From: Gerry Shand [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=nbYnsUJNiNaVNtV1F3CHTJBI1i-SsB3p0Cc8VY5s7CmK-oH2kZ-ho-pUfnB5t_7fBtGMPfHAEXw]ronlizus@y...[/url
    Sent: Monday, April 01, 2002 7:44 AM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] A/D Converters


    Hello Everyone:

    I am looking for an A/D converter that has the
    following characteristics:

    a. can sample a waveform every 200 microseconds or so
    (speed not important here)
    b. a sample time of less than 1 microsecond (speed
    needed here)
    c. serial output (8 or 12 bit)
    d. dip pin compatible (for prototyping/breadboarding)
    e. single channel, 5VDC unipolar power supply

    <deleted>
  • ArchiverArchiver Posts: 46,084
    edited 2002-04-02 02:35
    Do you realise that the stamp will not be able to get anywhere near
    these sample speed rates?


    --- In basicstamps@y..., Gerry Shand <ronlizus@y...> wrote:
    > Hello Everyone:
    >
    > I am looking for an A/D converter that has the
    > following characteristics:
    >
    > a. can sample a waveform every 200 microseconds or so
    > (speed not important here)
    > b. a sample time of less than 1 microsecond (speed
    > needed here)
    > c. serial output (8 or 12 bit)
    > d. dip pin compatible (for prototyping/breadboarding)
    > e. single channel, 5VDC unipolar power supply
    >
    > I have checked out the linear technologies website
    > without a whole lot of success - unless I want to go
    > to an surface mount chip and this would make
    > prototyping and breadboarding really "fun". Anyone
    > have any ideas, thoughts, suggestions or alternative
    > suppliers?
    >
    > Thanks.
    >
    > Gerry Shand
    > gshand@h...
    >
    >
    > __________________________________________________
    > Do You Yahoo!?
    > Yahoo! Greetings - send holiday greetings for Easter, Passover
    > http://greetings.yahoo.com/
  • ArchiverArchiver Posts: 46,084
    edited 2002-04-06 00:49
    Gerry,
    you can also try ADS 1286, much cheaper than MAX part and available
    trough Digikey.
    Arthur (ve6boe)


    --- In basicstamps@y..., Gerry Shand <ronlizus@y...> wrote:
    > Hello Everyone:
    >
    > I am looking for an A/D converter that has the
    > following characteristics:
    >

    <snip here>
  • ArchiverArchiver Posts: 46,084
    edited 2002-04-06 19:31
    Arthur is correct. This TI/Burr-Brown part has a similar serial
    interface to the MAX187, and both interface easily with Stamps. But for
    commercial applications controlled by PICs, I'm moving away from
    discrete ADCs and using PICS like the 16C773 which has a built-in 12-bit
    ADC.

    Dennis
    Original Message
    From: m5art [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=_b6Yb-crZnzHDNaMV_L5beUgXSPoZtNM7MEW9zQ7VrUI75X7mr2r8ve7Rs1rYUI9kAPpGg]m5art@y...[/url
    Sent: Friday, April 05, 2002 3:50 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Re: A/D Converters


    Gerry,
    you can also try ADS 1286, much cheaper than MAX part and available
    trough Digikey.
    Arthur (ve6boe)


    --- In basicstamps@y..., Gerry Shand <ronlizus@y...> wrote:
    > Hello Everyone:
    >
    > I am looking for an A/D converter that has the
    > following characteristics:
    >
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