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12bit DAC performance

Question asked by shumihin.oleg on Feb 4, 2014
Latest reply on Feb 4, 2014 by sung.chen_chung
Hi there,
In my application I need precise control of applied voltage. I use 12bit DAC with 2.5V reference. The mcu is stm32f107

I was going to do error budget analysis but was confused by the datasheet. It gives +/-4LSB of INL (which is quite high) but then there is another term - Offset(difference between measured value at 0x800 and the ideal value = Vref/2). And its max value can be +/-10mV!!! This offset is more than 16 LSB.

So my question is what to believe? the datasheet seems to contradict itself. Or it's me?

Cheers,
Oleg

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