PCF8883
Capacitive touch/proximity switch with auto-calibration, large
voltage operating range, and very low power consumption
Rev. 4.1 — 14 September 2016
Product data sheet
1. General description
The integrated circuit PCF8883 is a capacitive touch and proximity switch that uses a
patented (EDISEN) digital method to detect a change in capacitance on a remote sensing
plate. Changes in the static capacitance (as opposed to dynamic capacitance changes)
are automatically compensated using continuous auto-calibration. Remote sensing plates
(e.g. conductive foil) can be connected directly to the IC
1
or remotely using a coaxial
cable.
2. Features and benefits
Dynamic proximity switch
Digital processing method
Adjustable sensitivity, can be made very high
Adjustable response time
Wide input capacitance range (10 pF to 60 pF)
Automatic calibration
A large distance (several meters) between the sensing plate and the IC is possible
Open-drain output (P-type MOSFET, external load between pin and ground)
Designed for battery powered applications (I
DD
= 3
A,
typical)
Output configurable as push-button, toggle, or pulse
Wide voltage operating range (V
DD
= 3 V to 9 V)
Large temperature operating range (T
amb
=
40 C
to +85
C)
Internal voltage regulator
Available in SOIC8 and wafer level chip-size package
3. Applications
Proximity detection
Proximity sensing in
Mobile phones
Portable entertainment units
Switch for medical applications
Switch for use in explosive environments
Vandal proof switches
Transportation: Switches in or under upholstery, leather, handles, mats, and glass
1.
The definition of the abbreviations and acronyms used in this data sheet can be found in
Section 21.
NXP Semiconductors
PCF8883
Capacitive touch/proximity switch with auto-calibration
Buildings: switch in or under carpets, glass, or tiles
Sanitary applications: use of standard metal sanitary parts (e.g. tap) as switch
Hermetically sealed keys on a keyboard
4. Ordering information
Table 1.
Ordering information
Package
Name
PCF8883T
PCF8883US
SOIC8
WLCSP8
Description
plastic small outline package; 8 leads;
body width 3.9 mm
wafer level chip-size package; 8 bumps
Version
PCF8883T
PCF8883US
Type number
4.1 Ordering options
Table 2.
Ordering options
Orderable part number Sales item
(12NC)
PCF8883T/1,118
PCF8883US/7EA/1Y
935289766118
935300777518
Delivery form
tape and reel, 13 inch
dry pack, tape and reel, 13 inch
IC
revision
1
1
Product type number
PCF8883T/1
PCF8883US/7EA/1
5. Marking
Table 3.
PCF8883T
PCF8883US
Marking codes
Marking code
PCF8883
PC
8883-1
Product type number
PCF8883
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 4.1 — 14 September 2016
2 of 35
NXP Semiconductors
PCF8883
Capacitive touch/proximity switch with auto-calibration
6. Block diagram
Fig 1.
Block diagram of PCF8883
PCF8883
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 4.1 — 14 September 2016
3 of 35
NXP Semiconductors
PCF8883
Capacitive touch/proximity switch with auto-calibration
7. Pinning information
7.1 Pinning
Top view. For mechanical details, see
Figure 17.
Fig 2.
Pin configuration of PCF8883T (SOIC8)
PCF8883US
V
DD(INTREGD)
8
TYPE
2
IN
1
CPC
IN
1
PCF8883US
TYPE
2
V
DD(INTREGD)
8
CLIN
7
3
CPC
3
7
CLIN
5
V
DD
6
OUT
4
V
SS
aaa-024288
4
V
SS
6
OUT
5
V
DD
aaa-006459
Top side view
Bump view (bottom) side
Fig 3.
Pin configuration of PCF8883US (WLCSP8); for mechanical details, see
Figure 18
PCF8883
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 4.1 — 14 September 2016
4 of 35
NXP Semiconductors
PCF8883
Capacitive touch/proximity switch with auto-calibration
7.2 Pin description
Table 4.
Pin description
Input or input/output pins must always be at a defined level (V
SS
or V
DD
) unless otherwise specified.
Symbol
IN
TYPE
CPC
V
SS[1]
V
DD
OUT
CLIN
Pin
PCF8883T
1
2
3
4
5
6
7
PCF8883US
1
2
3
4
5
6
7
8
analog input/output sensor input
input
pin OUT behavior
configuration input
ground supply voltage
supply voltage
switch output
internal regulated supply
voltage output
Type
Description
analog input/output sensitivity setting
supply
supply
output
supply
analog input/output sampling rate setting
V
DD(INTREGD)[2]
8
[1]
[2]
The substrate (rear side of the die) is connected to V
SS
and should be electrically isolated.
The internal regulated supply voltage output must be decoupled with a decoupling capacitor to V
SS
.
PCF8883
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 4.1 — 14 September 2016
5 of 35
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