TS02NT

TS02N 2-Channel Self Calibration Capacitive Touch Sensor SPECIFICATION VER. 1.6 JUN. 2018 ADSemiconductor Confidential General Feature The TS02N is 2-Channel capacitive sensor with auto sensitivity calibration. And the supply voltage range is from 2.5 to 5.5V.  2-Channel capacitive touch sensor with self sensitivity calibration  Low power consumption  Sync function for parallel operation  Adjustable internal clock frequency with external resister  Open-drain digital output  Embedded noise elimination circuit  Embedded Internal power reset circuit  RoHS compliant 8SOP package  2.5V to 5.5V operation  Typical current consumption 28 uA (@3.3V, R_BIAS 510K Ohm)  Typical current consumption 56 uA (@5.0V, R_BIAS 510K Ohm) The result of touch sensing can be checked by parallel output port(OUT1 and OUT2). Over two TS02N can work on the one application at the same time thanks to SYNC function. Block Diagram Application  Home appliance  Membrane switch replacement  Human interface for toys & interactive games  Sealed control panels, keypads Ordering Information Part No. TS02N Package 8 SOP ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor)  Revision History Rev. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Description of change First creation Spec. supplementation Mechanical drawing modification Additional mechanical drawing modification Current consumption modification Marking name modification Add an overview Revise the Operating Temperature : -20 ~ 75℃ -> -40 ~ 85℃ Date Originator 06. 07. 26. 06. 09. 29. 07. 03. 04. 07. 04. 06. 17. 06. 16. 17. 09. 15. KD PARK KD PARK KD PARK KD PARK CH LEE CH LEE 18. 06. 21. KD PARK AD Semiconductor Confidential 3 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) Content General ..................................................................................................................2  Revision History .............................................................................................3 1 Pin Configuration............................................................................................5 1.1 2 2.1 3 4 R_BIAS implementation .................................................................................... 10 CS implementation ............................................................................................. 11 SYNC implementation........................................................................................ 12 OUTPUT implementation .................................................................................. 12 Recommended Application ..........................................................................13 7.1 7.2 8 ESD Characteristics .............................................................................................. 8 Latch-up Characteristics ....................................................................................... 8 Electrical Characteristics ................................................................................9 Implementation of TS02N ............................................................................10 6.1 6.2 6.3 6.4 7 Pin Map – 8 SOP .................................................................................................. 7 Absolute Maximum Rating ............................................................................8 ESD & Latch-up Characteristics ....................................................................8 4.1 4.2 5 6 8 SOP .................................................................................................................... 5 Pin Description ...............................................................................................6 Example – Power Line Split Strategy PCB Layout ............................................ 14 Example – PCB Layout (2 Channel Touch button with LED Display) ............. 15 PACKAGE DESCRIPTION ........................................................................16 8.1 8.2 Mechanical Drawing - GREATEK ..................................................................... 16 Marking Description ........................................................................................... 18 AD Semiconductor Confidential 4 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) 1 1.1 Pin Configuration 8 SOP TS02N 8SOP (Drawings not to scale) AD Semiconductor Confidential 5 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) 2 Pin Description VDD, GND Supply voltage and ground pin. CS1, CS2 Capacitive sensor input pins. R_BIAS Internal bias adjust input. Normally 510K-ohm resistor is connected between this port and ground. SYNC The IC operation signal output and peripheral IC operation signal input. OUT1, OUT2 Parallel output ports of CS1 and CS2 respectively. The structure of these parallel output ports is open drain NMOS for active low output level operation. AD Semiconductor Confidential 6 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) Pin Map – 8 SOP 2.1 PIN Number Name I/O 1 SYNC Analog Input 2 3 4 5 6 R_BIAS GND CS1 CS2 VDD Analog Input Ground Analog Input Analog Input Power 7 OUT2 Digital Output 8 OUT1 Digital Output Description Self sense operation signal output Peripheral sense operation signal input Internal bias adjust input Supply ground Sense channel 1 Sense channel 2 Power (2.5V ~ 5.0V) Ch2 touch detect output Open drain output (Active Low) Ch1 touch detect output Open drain output (Active Low) AD Semiconductor Confidential Protection VDD/GND VDD/GND VDD VDD/GND VDD/GND GND VDD/GND VDD/GND 7 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) 3 Absolute Maximum Rating Supply voltage 5.5 V Maximum voltage on any pin VDD+0.3 V Maximum current on any PAD 100mA Continuous power Dissipation 800mW Storage Temperature -50 ~ 150℃ Operating Temperature -40 ~ 85℃ Junction Temperature 150℃ Note Unless otherwise noted, all above are operated in normal temperature 4 4.1 4.2 ESD & Latch-up Characteristics ESD Characteristics Mode Polarity H.B.M Pos / Neg M.M Pos / Neg C.D.M Pos / Neg Max 3500V 6250V 8000V 700V 700V 700V 800V Reference VDD VSS P to P VDD VSS P to P DIRECT Polarity Positive Negative Positive Max 200mA -200mA 8.0V Test Step Latch-up Characteristics Mode I Test V supply over 5.0V 25mA AD Semiconductor Confidential 1.0V 8 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) 5 Electrical Characteristics ▪ VDD=3.3V, RB =510k, (Unless otherwise noted), TA = 25℃ Characteristics Symbol Operating supply voltage VDD Current consumption IDD Output maximum sink current Sense input capacitance range Note1 Sense input resistance range Minimum detectable capacitance difference Min Typ Max Units 2.5 3.3 5.5 V VDD= 3.3V RB=510k - 28 52 VDD= 5.0V RB=510k - 56 105 TA = 25℃ - - 4.0 ㎃ CS1 CS2 - 10 100 ㎊ RS - 200 1000 Ω CS = 10pF 0.2 - - ㎊ ΔC > 0.2pF - 12 - ΔC < 0.2pF - 30M - VDD = 3.3V RB = 510k - 100 - VDD = 5.0V RB = 510k - 80 - VDD = 3.3V 200 510 820 VDD = 5.0V 330 620 1200 IOUT ΔC Output impedance (open drain) Zo Self calibration time after power on TCAL Recommended bias resistance range RB Note2 Test Condition ㎂ Ω ms kΩ Maximum bias capacitance CB_MAX - 820 1000 pF Recommended sync resistance range RSYNC 1 2 20 MΩ Note 1: The sensitivity can be increased with lower CS value. The recommended value of CS is 10pF when using 3T PC(Poly Carbonate) cover and 10 ㎜ x 7 ㎜ touch pattern. Note 2: The lower RB is recommended in noisy condition. AD Semiconductor Confidential 9 / 19 ADSemiconductor® TS02N(2-CH Sensitivity Calibration Capacitive Touch Sensor) 6 Implementation of TS02N 6.1 R_BIAS implementation VDD CB RB R_BIAS