Hi,
I was playing around with the Arm (STM32F4) built in DACs recently and this was quite interesting.
One experiment was to generate a sine wave by calculating a table of 4096 (12 bit DAC) values corresponding to the entire 360s.
These are then adjusted to reflect 4096 range that the analog output could be set to.
When doing this I wondered how to detect a single bit change, the scope probably isn't great for this because a 3.3v range covered by 4096 range equates to about 800 uV/bit.
So are there decent multi-meters that would be suitable for directly seeing such small voltages?
For example the DAC value 0x001 would see the output voltage of around 805 uV and so the value 0x002 would see 1,6 mV and so on, oxFFF would see 3.3 V.
I'm very rusty (and behind the times somewhat) with electronics so wanted to ask experts about practical ways to measure these kinds of voltages.
Thanks
I was playing around with the Arm (STM32F4) built in DACs recently and this was quite interesting.
One experiment was to generate a sine wave by calculating a table of 4096 (12 bit DAC) values corresponding to the entire 360s.
These are then adjusted to reflect 4096 range that the analog output could be set to.
When doing this I wondered how to detect a single bit change, the scope probably isn't great for this because a 3.3v range covered by 4096 range equates to about 800 uV/bit.
So are there decent multi-meters that would be suitable for directly seeing such small voltages?
For example the DAC value 0x001 would see the output voltage of around 805 uV and so the value 0x002 would see 1,6 mV and so on, oxFFF would see 3.3 V.
I'm very rusty (and behind the times somewhat) with electronics so wanted to ask experts about practical ways to measure these kinds of voltages.
Thanks