PCF8883 datasheet(10/24 Pages) NXP

10 / 24 page

PCF8883_1

Product data sheet

Rev. 01 — 16 October 2009

10 of 24

NXP Semiconductors

PCF8883

Capacitive proximity switch with auto-calibration

10. Static characteristics

[1]

When the input capacitance range is limited to 10 pF

≤ C

i ≤ 40 pF or an external pull-down resistor RC is used, the device can be

operated down to VDD = 3.0 V over the full temperature range.

[2]

Idle state is the steady state after completed power-on without any activity on the sensor plate and the voltage on the reservoir capacitor

CCPC settled.

[3]

For reliability reasons the average output current must be limited to 4.6 mA at 70

°C and 3.0 mA at 85 °C.

[4]

External ceramic chip capacitor recommended (see Figure 15).

Table 5.

Static characteristics

VDD = 5 V, Tamb = +25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD

supply voltage

[1] 3.0

9.0

Vlockin

lock-in voltage

no external load

4.0

VDD(INTREGD)

internal regulated supply voltage

VDD >Vlockin

3.0

4.0

4.6

∆VDD(INTREGD) internal regulated supply voltage

variation

VDD < Vlockin

-10

IDD

supply current

idle state; fs = 1 kHz

[2]

-3

µA

idle state; fs = 1 kHz;

VDD = 3.0 V

[2]

2.2

3.5

µA

Isink

sink current

internal constant current to

VSS

150

output voltage

on pin OUT; pull-up voltage

VDD

9.0

output current

P-MOS

[3]

010

short circuit protection

VO ≥ 0.6 V

Vsat

saturation voltage

on pin OUT;

IO = +10 mA

0.1

0.2

0.4

on pin OUT;

IO = +10 mA;

VDD = 3.0 V

0.1

0.3

0.5

Cdec

decoupling capacitance

on pin VDD(INTREGD)

[4] 100

220

input voltage

on pin CPC

0.6

VDD(INTREGD) − 0.3 V

ILI

input leakage current

on pin CPC

−1

Tamb

ambient temperature

−40

+85

°C

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