December 17, 2010
about 2 years ago
The coil is my own design. It’s done as tracks on a 6-layer PCB. The size is about a credit card.
What is the Power consumption of ID-3LA? This is not specified in the datasheet.
I have done a 1.33 mH coil (44 Ohm serial resistance) and connected it to the module using a 3.0 V supply. It reads tags nicely. I measure the current consumption to about 10 mA. Can I trust this to be a relevant number using my coil design? I guess that a coil with lower serial resistance will increase current consumption, but I’m happy with my current coil (the reading distance is more than enough). Or is there a risk that more current is consumed than what I measure?
I need this data to the design the power management…
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