Any recommendations for a cheap combo chip, 12 bits min, for interfacing to a uP? Ideally I need single 5V rail supply and conversion rate of around 100K/s for the ADC
Why not us a micro with built in ADC such as one of the Analog Devices microcontrollers
Largely because I need a CANBUS i/f, and that means PIC unless someone can point me to some extremely cheap ucontrollers with CANBUS and 12 ADC/DAC
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If not, you could drop a MCP2515 SPICAN onto whichever micro you want.
Best regards, Spehro Pefhany
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One reason for using the PIC is the wealth of free code available, probably unmatched by any other ucontroller.
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Certainly in quality. ;-)
But even if the drivers are a major factor, you may *still* find it cheaper to use two micros and relegate the 805x to just buffering the information to and from the ADC/DAC.
Best regards, Spehro Pefhany
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Why, just for once, can't I find the perfect part to do the job? Everything I've done for the last 25yrs has been a balancing act...
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Eventually it catches up with you. You and your little dog too.
How about something like a dspic30F6011A, just add a DAC.
Best regards, Spehro Pefhany
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Possible, but it seems a bit overkill, esp the pin count.
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30F4013 then, whatever. ;-)Best regards, Spehro Pefhany
Austria Microsystems has a series SPI based 12bit ADC.
JG
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Bingo!
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