PCF8883USSLASH7EASLASH1 datasheet(34/35 Pages) NXP

34 / 35 page

PCF8883

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Product data sheet

Rev. 4.1 — 14 September 2016

34 of 35

NXP Semiconductors

PCF8883

Capacitive touch/proximity switch with auto-calibration

27. Figures

Fig 1.

Block diagram of PCF8883 . . . . . . . . . . . . . . . . . .3

Fig 2.

Pin configuration of PCF8883T (SOIC8) . . . . . . . .4

Fig 3.

Pin configuration of PCF8883US (WLCSP8);

for mechanical details, see Figure 18 . . . . . . . . . .4

Fig 4.

Functional diagram of the sensor logic . . . . . . . . .6

Fig 5.

Functional principle of the PCF8883 . . . . . . . . . . .7

Fig 6.

Switching modes timing diagram of PCF8883 . . . .9

Fig 7.

Integrated voltage regulator . . . . . . . . . . . . . . . . . .9

Fig 8.

IDD with respect to VDD . . . . . . . . . . . . . . . . . . . .12

Fig 9.

IDD with respect to temperature . . . . . . . . . . . . . .13

Fig 10. IDD with respect to sampling frequency (fs) . . . . .13

Fig 11. Switching time (tsw) with respect to sampling

frequency (fs) . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Fig 12. Switching time (tsw) with respect to capacitor

on pin CLIN (CCLIN) . . . . . . . . . . . . . . . . . . . . . . .14

Fig 13. Switching time (tsw) with respect to temperature .15

Fig 14. Input voltage on pin CPC (VI(CPC))

with respect to capacitor on pin IN (CIN) . . . . . . .15

Fig 15. Input voltage on pin CPC (VI(CPC))

with respect to temperature . . . . . . . . . . . . . . . . .16

Fig 16. Typical application . . . . . . . . . . . . . . . . . . . . . . . .17

Fig 17. Package outline of PCF8883T (SOIC8). . . . . . . .19

Fig 18. WLCSP8 outline of PCF8883US . . . . . . . . . . . . .20

Fig 19. Alignment mark of the PCF8883US die

(for location and dimension see Table 10) . . . . . .21

Fig 20. Tape and reel details for PCF8883T . . . . . . . . . .22

Fig 21. Tape and reel details for PCF8883US . . . . . . . . .23

Fig 22. Temperature profiles for large and small

components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Fig 23. Temperature profiles for large and small

components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

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