PCF8883 datasheet(10/25 Pages) NXP

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PCF8883

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Product data sheet

Rev. 2 — 8 March 2011

10 of 25

NXP Semiconductors

PCF8883

Capacitive proximity switch with auto-calibration

10. Static characteristics

[1]

Alternatively an external discharge resistor RC can be used (see Section 13).

[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

10 pF

≤ C

i ≤ 40 pF;

−40 °C ≤ T

amb ≤ +85 °C

[1]

3.0

9.0

10 pF

≤ C

i ≤ 35 pF;

−20 °C ≤ T

amb ≤ +85 °C

2.8

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

ΔV

DD(INTREGD)

internal regulated supply voltage

variation

VDD < Vlockin

-10

IDD

supply current

idle state; fs = 1 kHz

[2]

VDD =5.0 V

μA

VDD =3.0 V

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

VDD = 5.0 V

0.1

0.2

0.4

VDD = 3.0 V

0.1

0.3

0.5

Cdec

decoupling capacitance

on pin VDD(INTREGD)

[4]

100 -

220

Vi(CPC)

input voltage on pin CPC

0.6

VDD(INTREGD) − 0.3 V

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