PCF8883USSLASH7EASLASH1 datasheet(18/35 Pages) NXP

tên linh kiện	PCF8883US/7EA/1

Giải thích chi tiết về linh kiện	Capacitive touch/proximity switch with auto-calibration, large voltage operating range, and very low power consumption

PDF	35 Pages

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nhà sản xuất	NXP [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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PCF8883

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Product data sheet

Rev. 4.1 — 14 September 2016

18 of 35

NXP Semiconductors

PCF8883

Capacitive touch/proximity switch with auto-calibration

Remark: CCPC should be a high-quality foil or ceramic capacitor, for example an

X7R type.

When limiting the maximum input capacitance to 35 pF and the minimum operating

temperature to

20 C then the minimum operating voltage can be reduced to 2.8 V. The

main limitation when lowering the supply voltage is a reduction in the range of the VI(CPC)

voltage, which is specified from 0.6 V to VDD  0.3 V. Reducing the VI(CPC) working range

is equivalent to reducing the input capacitance range. Additionally, VI(CPC) increases with

decreasing temperature, as illustrated in Figure 14 and Figure 15. This means that it is

possible to lower the supply voltage if the minimum temperature will be raised accordingly.

For the choice of proper component values for a given application, the component

specifications in Table 6 and Table 7 must be followed.

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