P9412 Datasheet

R35DS0011EU0120 Rev.1.2

Jul.6.21

Page 23

hardware selection for reported Q-factor value. The external resistor dividers should be biased by the LDO1P8

power supply to avoid incorrect ADC voltage from being read in the case of a dead battery. See the P9412 User

Manual for additional details and population table for determining Q-factor reported values.

3.26

Typical Operating Characteristics

Figure 7. Wireless Initial Start-Up Waveforms Rx Mode

from First Digital PING

(ch1=Vrect, ch3=LDO5P0, ch4=LDO1P8)

Figure 8. Wireless Start-Up Waveforms Rx Mode from

First Digital PING until VOUT

ch1=Vrect, ch2=Vout, ch3=LDO5P0, ch4=LDO1P8

Figure 9. Capacitive Divider Start-up Waveforms (Initiated

after Wireless Power Start-Up), VOUT=6V

(ch1=CPN, ch2=VOUT, ch3=CPP, ch4=CPOUT8)

Figure 10. Capacitive Divider Shutdown Waveforms

(Initiated after Wireless Power Start-Up), VOUT=6V

(ch1=CPN, ch2=VOUT, ch3=CPP, ch4=CPOUT8)