Hello, we are having range problems with the CLEV6630B v2.0 at TVDD = 3.3V during LPCD. Are there registers or something that we can change to improve the sensing range. we have changed the ON and OFF time and set the I and Q thresholds to 0. At TVDD = 3.3V we need to wipe our card on the antenna to wake it up. At TVDD = 5V it seem to work a lot better.
We need our product to run at 3.3V and are wondering if there are other configuration changes to be made.
David
Hello David,
If TVDD=3.3v, there is no better way to improve detection range of card, see datasheet :
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To connect the CLRC663 to a Microcontroller supplied by 3.3 V, PVDD and VDD shall be at
a level of 3.3 V, TVDD can be in a range from 3.3 V to 5.0 V. A higher supply voltage at
TVDD will result in a higher field strength.
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So if it is possible to change TVDD to 5V, do it, please!
Have a nice day!
Best Regards,
Weidong Sun