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Rev 03 power up

A project log for PIXI Analog Shield

An Arduino Shield using the Maxim MAX11300 for 20 Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO

MagicWolfiMagicWolfi 05/10/2015 at 15:330 Comments

The 1st board of rev 03 is assembled and works very well so far. SPI communication is established, the internal and on-board external temperature sensor are operational. And most important, the analog inputs and outputs seem to be happy. At least the ADC DAC settings with 0v to +10V voltage range.

With the internal voltage reference and my crappy multimeter looping back the DAC value into a ADC, I see the following results:

DACADCU[V]
0x00000x0000-0.0039
0x04000x03FB2.507
0x08000x07FE5.02
0x0B000x0BFE7.52
0x0FFF0x0FE89.98

Looks decent, I am just not sure yet what happens at the top end of the range.

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