TS04P [ADI]
韩国ADS公司新四键触摸按键IC; 韩国ADS八键电容式触摸按键IC
| 型号： | TS04P |
| 厂家： | 
ADI |
| 描述： | 韩国ADS公司新四键触摸按键IC |
| 文件： | 总19页 (文件大小：512K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS04P
TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
SPECIFICATION
VER. Preliminary
Jan. 2013
ADSemiconductor Confidential
ADSemiconductor®
TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Revision History
Rev.
Description of change
Date
Originator
First creation
13. 01. 18.
KD PARK
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Content
Revision History.................................................................................................................2
1
Features...............................................................................................................................4
1.1
1.2
General Features ...................................................................................................4
Applications..........................................................................................................4
2
3
4
Block Diagram....................................................................................................................5
Pin Configuration ...............................................................................................................6
Pin Description ...................................................................................................................7
4.1
Pin Map.................................................................................................................7
5
6
Absolute Maximum Rating ................................................................................................8
ESD & Latch-up Characteristics ........................................................................................8
6.1
6.2
ESD Characteristics..............................................................................................8
Latch-up Characteristics.......................................................................................8
7
8
Electrical Characteristics....................................................................................................9
TS04P Implementation.....................................................................................................10
8.1
8.2
8.3
8.4
8.5
Typical current consumption..............................................................................10
CS implementation .............................................................................................10
SYNC implementation........................................................................................11
Parallel output.....................................................................................................12
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 Features
1.1 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
Name
I/O
Description
Protection
VDD/GND
VDD/GND
1
OUT4
Digital Output CH4 parallel output (Open drain)
Digital Input
/Output
Output mode selection input1
Sync pulse input /output 3
2
SYNC3
3
4
5
6
7
VDD
CS1
CS2
CS3
CS4
Power
Power (2.5V~5.0V)
GND
Analog Input
Analog Input
Analog Input
CH1 capacitive sensor input
CH2 capacitive sensor input
CH3 capacitive sensor input
VDD/GND
VDD/GND
VDD/GND
VDD/GND
Analog Input
Digital Input
/Output
Digital Input
/Output
CH4 capacitive sensor input
Sensitivity selection input 12
Sync pulse input /output 1
Sensitivity selection input 23
Sync pulse input /output 2
8
9
SYNC1
SYNC2
VDD/GND
VDD/GND
VDD/GND
DUMMY
VSS
-
No Connection4
10
11
12
13
14
Ground
Supply ground
VDD
OUT1
OUT2
OUT3
Digital Output CH1 parallel output (Open drain)
Digital Output CH2 parallel output (Open drain)
Digital Output CH3 parallel output (Open drain)
VDD/GND
VDD/GND
VDD/GND
1
2
3
4
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
Maximum voltage on any pin
Maximum current on any PAD
Power Dissipation
6V
VDD+0.3
100mA
800mW
-50 ~ 150℃
Storage Temperature
Operating Temperature
-20 ~ 75℃
Junction Temperature
150℃
Note : Unless any other command is noted, all above are operated in normal temperature.
6 ESD & Latch-up Characteristics
6.1 ESD Characteristics
Mode
Polarity
Max
Reference
7500V
7500V
7500V
550V
VDD
VSS
H.B.M
Pos / Neg
P to P
VDD
VSS
M.M
Pos / Neg
550V
550V
P to P
C.D.M
-
1000V
Field Induced Charge
6.2 Latch-up Characteristics
Mode
Polarity
Max
100mA
-100mA
8.25V
Reference
Positive
Negative
Positive
I Test
JESD78A
V supply over 5.0V
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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 Test Condition
Min
Typ
3.3
90
Max Units
Operating supply voltage
VDD
2.5
5.5
140
180
V
VDD= 3.3V
VDD= 5.0V
-
-
IDD
Current consumption
㎂
110
Internal reset criterion VDD
VDD_RST TA = 25℃
-
-
-
-
-
0.3∙VDD
V
voltage
Output maximum sink
current
Minimum detective
capacitance difference
TA = 25℃
IOUT
4.0
-
㎃
㎊
ΔCMIN
0.1
ΔC > ΔCMIN
-
-
-
12
30M
80
-
-
-
Output impedance
(open drain)
Zo
Ω
ΔC < ΔCMIN
Self calibration time after
system reset
TCAL
Normal calibration speed
ms
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 TS04P Implementation
8.1 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.
0
Typical current consumption curve of TS04P
8.2 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 <<
Touch PAD4
CS4
RS1
Touch PAD1
CS1 <<
CS1
The TS04P has eight independent touch sensor input from CS1 to CS4. The internal touch decision process of
each channel is separated from each other. Therefore eight channel touch key board application can be designed
by using only one TS04P without coupling problem.
The size and shape of PAD might have influence on the sensitivity. The sensitivity will be optimal when the size
of PAD is approximately an half of the first knuckle (it’s about 10 ㎜ｘ 7 ㎜). The connection line of CS to
touch PAD is recommended to be routed as short as possible to prevent from abnormal touch detect caused by
connection line. The unused CS pin must be connected with the ground to prevent the unpredictable mal-
function that occurred in the floating CS pin.
8.3 SYNC implementation
The TS04P has five SYNC pins to make it possible to operate with many optional functions such as SYNCTM
function, sensitivity selections, output mode selection, output level selection, and calibration speed selection. No
external component is used for above selections.
The determination of SYNC pins connection of TS04P is accomplished in initial operation periods. Therefore
changing connection of SYNC pin after initial operation period cannot affect the optional function selection.
8.3.1
SYNCTM function
For SYNCTM function, all SYNC pins (form SYNC1 to SYNC3) have same function. So, at least, one of three
SYNC pins operates as SYNCTM function, TS04P can be operated with other TS04P or TSxx series without
interfering with each other. Inside of TS04P, there is internal oscillator for SYNC pulse so no external
component is used for SYNCTM function. Simply, it is needed to connect SYNC pin to other SYNC pin of
TS04P or TSxx series for using SYNCTM function. For proper SYNCTM function, less five other TS04P or TSxx
series can be connected with.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
SYNC <<
1st TS04P
SYNC <<
2nd TS04P or TS**
SYNC pulse
SYNC <<
3th TS04P or TS**
8.3.2
Sensitivity selections
SYNC1 and SYNC2 pin of TS04P can be used as sensitivity selection pin. Both of two SYNC pins have three
methods of connection. Open connection (N.C., SYNC connection), connection to GND, and connection to
VDD are these methods. As below table, TS04P has 9 step sensitivity selections. When SYNC1 pin or SYNC 2
pin has no connection to GND or VDD, that SYNC pin may be simultaneously used for SYNCTM function.
Sensitivity level (thickness [mm] of proper poly-carbonate insulator) of each sensitivity selection
N.C.
SYNC1
Connect to VDD
Connect to GND
(SYNC connection)
SYNC2
15.0
9.0
13.0
7.5
11.0
6.0
Connect to GND
N.C. (SYNC connection)
Connect to VDD
5.0
4.0
3.0
Note 3 : The size of touch PAD is 10 ㎜ｘ 7 ㎜ used.
Note 4 : Above proper thickness is reliable but it can be changed by insulator material and application.
8.3.3
Output mode selections
SYNC3 pin of TS04P is output mode selection input pin. SYNC3 also has three connections, such as open
connection (N.C., SYNC connection), connection to GND, and connection to VDD. The output mode of each
connection is such as below table.
Output mode of each SYNC3 connections
N.C.
SYNC3 connection
Output mode
Connect to VDD
Connect to GND
(SYNC connection)
Single output
Multi-output
Single output
TS04P operates as single output mode when SYNC3 is connected to VDD or open, the one output that is
detected fastest is appeared. So application PCB composed very near touch pads is possible to operate without
confusion of neighborhood touch. When SYNC3 is connected to GND and TS04P operates as multi-output
mode, all output of TS04P can be appeared.
8.4 Parallel output
TS04P acts as active low parallel output mode. Parallel output ports (OUT1 ~ OUT4) have an open drain
NMOS structure. For this reason, the parallel output mode of TS04P needs ROUT as below figures. The
maximum output drive current is 4mA, so over a few kΩ must be used as ROUT. Normally 10kΩ is used as ROUT
.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
VDD
ROUT1
ROUT2
OUTPUT1
OUT1
OUT2
OUTPUT2
ROUT4
OUTPUT4
OUT4
Active low parallel output mode circuit
8.5
Internal reset operation
The TS04P has stable internal reset circuit to offer reset pulse to digital block. The supply voltage for a system
start or restart should be under 0.3∙VDD of normal operation VDD. No external components required for TS04P
power reset, that helps simple circuit design and to realize the low cost application.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
9 Recommended Circuit Diagram
TS04P Application Example Circuit
TS04P is reset by internal reset circuit. VDD voltage rising time should be shorter than 100msec for
proper operation.
Normally, DUMMY pin dose not connection to anywhere. But, in radio frequency noise environment,
DUMMY pin must form a pattern line on PCB.
The VDD periodic voltage ripple over 50mV and the ripple frequency is lower than 10 kHz can cause
wrong sensitivity calibration. To prevent above problem, power (VDD, GND) line of touch circuit
should be separated from other circuit. Especially LED driver power line or digital switching circuit
power line certainly should be treated to be separated from touch circuit.
The CS patterns also should be routed as short as possible and the width of line might be about
0.25mm.
Parallel capacitor of CS pin could be useful in case detail sensitivity mediation is required such as for
complementation sensitivity difference between channels.
Serial connection resistor of CS pins may be used to avoid mal-function from external surge and ESD.
The capacitor that is between VDD and GND is an obligation. It should be located as close as possible
from TS04P.
The CS pattern routing should be formed by bottom metal (opposite metal of touch PAD).
The empty space of PCB must be filled with GND pattern to strengthen GND pattern and to prevent
external noise from interfere with sensing frequency.
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
9.1 Example – Power Line Split Strategy PCB Layout
A. Not split power Line (Bad power line design)
The The noise that is generated by AC load or relay can be loaded at 5V power line.
A big inductance might be appeared in case of the connection line between main board and display
board is too long, moreover the voltage ripple could be generated by LED (LCD) display driver at
VDD (5V).
B. Split power Line (One 5V regulator used) – Recommended
C. Split power Line (Separated 5V regulator used) – Strongly recommended
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
10 MECHANICAL DRAWING
10.1 Mechanical Drawing of TS04P (14 SOP)
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
11 MARKING DESCRIPTION
11.1 Marking Description of TS04P
Company Code : ADS
AD Semiconductor
Device Code : T S 0 4 P
Weekly Code : YY WW
Type of version
Channel Number
Touch Switch Group
Manufacturing Week
Manufacturing Year
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TS04P (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
NOTES:
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AD SEMICONDUCTOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE
SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND
GENERAL COUNSEL OF AD SEMICONDUCTOR CORPORATION
The ADS logo is a registered trademark of ADSemiconductor
ⓒ 2006 ADSemiconductor – All Rights Reserved
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