TS04P
TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
SPECIFICATION
VER. 1.0
Jan. 2013
ADSemiconductor Confidential
ADSemiconductor®
TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Revision History
Rev.
1.0
Description of change
First creation
Date
Originator
13. 01. 18.
KD PARK
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Content
1
Revision History .................................................................................................................2
Features ............................................................................................................................... 4
1.1
General Features ................................................................................................... 4
1.2
Applications .......................................................................................................... 4
2 Block Diagram ....................................................................................................................5
3 Pin Configuration ...............................................................................................................6
4 Pin Description ...................................................................................................................7
4.1
Pin Map................................................................................................................. 7
5 Absolute Maximum Rating ................................................................................................ 8
6 ESD & Latch-up Characteristics ........................................................................................ 8
6.1
ESD Characteristics .............................................................................................. 8
6.2
Latch-up Characteristics ....................................................................................... 8
7 Electrical Characteristics ....................................................................................................9
8 TS04P Implementation .....................................................................................................10
8.1
Typical current consumption .............................................................................. 10
8.2
CS implementation ............................................................................................. 10
8.3
SYNC implementation........................................................................................ 11
8.4
Parallel output ..................................................................................................... 12
8.5
Internal reset operation ....................................................................................... 13
9 Recommended Circuit Diagram ....................................................................................... 14
10 MECHANICAL DRAWING ........................................................................................... 16
10.1
Mechanical Drawing of TS04P (14 SOP) .......................................................... 16
11 MARKING DESCRIPTION ............................................................................................ 18
11.1
Marking Description of TS04P ........................................................................... 18
NOTES: ...................................................................................................................................19
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
1
1.1
Features
General Features
4-Channel capacitive sensor with auto sensitivity calibration
Selectable output operation mode (single output /multi output)
Uniformly adjustable 9 step sensitivity
Sync function for parallel operation
3 SYNC pins for various option selections
Almost no external component needed
Open-drain digital output
Low current consumption
Embedded common and normal noise elimination circuit
RoHS compliant 14 SOP package
1.2
Applications
Home application
Membrane switch replacement
Sealed control panels, keypads
Door key-lock matrix application
Touch screen replacement application
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
2
Block Diagram
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
3
Pin Configuration
[14-SOP]
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
4
Pin Description
4.1
Pin Map
Pin
Number
1
Name
I/O
OUT4
SYNC3
3
4
5
6
7
VDD
CS1
CS2
CS3
CS4
8
SYNC1
9
SYNC2
10
DUMMY
VSS
OUT1
OUT2
OUT3
CH4 parallel output (Open drain)
Output mode selection input1
Sync pulse input /output 3
Power (2.5V~5.0V)
CH1 capacitive sensor input
CH2 capacitive sensor input
CH3 capacitive sensor input
CH4 capacitive sensor input
Sensitivity selection input 12
Sync pulse input /output 1
Sensitivity selection input 23
Sync pulse input /output 2
No Connection4
VDD/GND
2
Digital Output
Digital Input
/Output
Power
Analog Input
Analog Input
Analog Input
Analog Input
Digital Input
/Output
Digital Input
/Output
Ground
Digital Output
Digital Output
Digital Output
Supply ground
CH1 parallel output (Open drain)
CH2 parallel output (Open drain)
CH3 parallel output (Open drain)
VDD
VDD/GND
VDD/GND
VDD/GND
11
12
13
14
1
2
3
4
Description
Protection
VDD/GND
GND
VDD/GND
VDD/GND
VDD/GND
VDD/GND
VDD/GND
VDD/GND
VDD/GND
Refer to 8.3.3. Output mode selections.
Refer to 8.3.2. Sensitivity selections.
Refer to 8.3.2. Sensitivity selections.
DUMMY pin should be no connection.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
5
Absolute Maximum Rating
Battery supply voltage
6V
Maximum voltage on any pin
VDD+0.3
Maximum current on any PAD
100mA
Power Dissipation
800mW
Storage Temperature
-50 ~ 150℃
Operating Temperature
-20 ~ 75℃
Junction Temperature
150℃
Note : Unless any other command is noted, all above are operated in normal temperature.
6
6.1
ESD & Latch-up Characteristics
ESD Characteristics
Mode
H.B.M
M.M
C.D.M
6.2
Polarity
Max
Reference
7500V
VDD
7500V
VSS
7500V
P to P
550V
VDD
550V
VSS
550V
P to P
1000V
Field Induced Charge
Polarity
Max
Reference
Positive
100mA
Negative
-100mA
Positive
8.25V
Pos / Neg
Pos / Neg
-
Latch-up Characteristics
Mode
I Test
V supply over 5.0V
JESD78A
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
7 Electrical Characteristics
▪ VDD=3.3V, (Unless otherwise noted), TA = 25℃
Characteristics
Symbol
Operating supply voltage
VDD
Current consumption
IDD
Internal reset criterion VDD
voltage
Output maximum sink
current
Minimum detective
capacitance difference
Output impedance
(open drain)
Test Condition
Min
Typ
Max
Units
2.5
3.3
5.5
V
VDD= 3.3V
-
90
140
VDD= 5.0V
-
110
180
VDD_RST
TA = 25℃
-
1.5
IOUT
TA = 25℃
-
-
4.0
㎃
0.1
-
-
㎊
ΔC > ΔCMIN
-
12
-
ΔC < ΔCMIN
-
30M
-
ΔCMIN
㎂
V
Zo
Ω
Self calibration time after
TCAL
Normal calibration speed
80
ms
system reset
Note 1: The sensitivity can be decreased with higher parallel capacitance of CS pin including parasitic
capacitance made by neighbor GND or other pattern.
Note 2: The series resistor (under 1kΩ) of CS can be used in noisy condition to avoid mal-function from external
surge and ESD.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
8
8.1
TS04P Implementation
Typical current consumption
TS04P uses internal bias circuit, so internal clock frequency and current consumption is fixed and no external
bias circuit is needed. The typical current consumption curve of TS04P is represented in accordance with VDD
voltage as below. Internal bias circuit can make the circuit design simple and reduce external components.
IDD [uA]
Typical current consumption
120
100
80
60
40
20
0
2.0
8.2
2.5
3.0
3.5
4.0
VDDcurve
[V] of TS04P
Typical current consumption
4.5
5.0
5.5
CS implementation
TS04P has 9 step selections of sensitivity and internal protection circuit so external components of CS pins such
as series resistor or parallel capacitor isn’t necessary. The parallel parasitic capacitance of CS pins caused by
touch line, touch pad and neighbor GND or other pattern may affect sensitivity. The sensitivity will be
decreased when bigger parallel parasitic capacitance of CS pin is added.
Parallel capacitor (CS1~S4) of CS pin is useful in case of detail sensitivity mediation is required such as for
complementation sensitivity difference between channels. Same as above parallel parasitic capacitance,
sensitivity will be decreased when a big value of parallel capacitor (CS1~S4) is used. Under 50pF capacitor can be
used as sensitivity meditation capacitor and a few pF is usually used. The RS, serial connection resistor of CS
pins, may be used to avoid mal-function from external surge and ESD. (It might be optional.) From 200Ω to
1kΩ is recommended for RS. Refer to below CS pins application figure.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
RS4
CS4
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