Hello every body!
I have one question about AD5421. Can I calibrate the current of zero code? I mean, when I put on the DAC register 0x0000, AD5421 can show 4.2 mA, but it must show 4 mA.
You can achieve this with the use of the gain adjust and offset adjust registers. Details of the adjust registers and of the transfer functions can be found on page 30 and 31 respectively of the data sheet Rev G.
For example, to get a 4.2mA for zero scale, you can have Gain = 65535, D = 0(Zero Scale), and offset of 33588.
Please let me know if you have any further questions.
Retrieving data ...