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14 or 16 bit ADC and a BS2, anyone? — Parallax Forums

14 or 16 bit ADC and a BS2, anyone?

Piper984Piper984 Posts: 74
edited 2005-12-10 14:42 in BASIC Stamp
Hello folks,

I have· a need to measure some analog input at a resolution higher than the 12 bit ADC chips I've been using with BS2.· Anyone used a 16bit A/D chip and your BS2 before?· Which one worked best for you?· This is for a proof of concept QA station for a customer, so long term we'd source a NI Daq card if we got the job, but for·just·rough development·I'd like to use a BS2 and a 16 (or could even use 14) bit ADC.

Regards!

Comments

  • Tracy AllenTracy Allen Posts: 6,664
    edited 2005-12-08 17:13
    The Linear Tech delta sigma converters (LTC24xx) are very good. It is 24 bits, but you pick off 16 msbs. Other products from Maxim, Analog Devices, and TI.

    A lot depends on the input range you require, the number of channels, and not least, your soldering capabilities. A lot of these come in SSOP or DFN packages.

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    Tracy Allen
    www.emesystems.com
  • Piper984Piper984 Posts: 74
    edited 2005-12-08 18:31
    Hello Tracy,

    I have used the LTC1298 for a few projects with good success. I'll look into their 24 bit IC. I only need 2 channels, and need a DIP package (I don't even try SMT stuff anymore, always send it to PCB fab shop to make a carrier if I can't get the part in through hole).

    Many thanks!
  • bobledouxbobledoux Posts: 187
    edited 2005-12-09 13:45
    The ADS1110 is inexpensive at about $4 but comes in the SOT23-6. Its good to 16 bits. It also has a hardware ID so multiple units can share a common set of I2C lines.
  • Piper984Piper984 Posts: 74
    edited 2005-12-10 14:42
    Thanks for all the data.· I have order a few chips to test.
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