TS04

ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) TS04 4-Channel Self Calibration Capacitive Touch Sensor SPECIFICATION VER. 3.4 Nov. 2016 ADSemiconductor Confidential ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) General Feature The TS04 is 4-Channel capacitive sensor with auto sensitivity calibration. And the supply voltage range is from 2.5 to 5.5V.  4-Channel capacitive sensor with auto sensitivity calibration  Parallel output interface  Independently adjustable sensitivity with external capacitor  Adjustable internal frequency with external resister  Embedded high frequency noise elimination circuit  Typical current consumption 40uA (@3.3V VDD)  Typical current consumption 80uA (@5.0V VDD)  RoHS compliant 16QFN, 14SOP package The result of touch sensing can be checked by parallel output port, OUT1 ~ OUT4. Block Diagram Application  Mobile application (mobile phone / PDA / PMP / MP3 etc)  Membrane switch replacement  Sealed control panels, keypads Ordering Information Part No. TS04-Q TS04 Package 16 QFN 14 SOP AD Semiconductor Confidential 2 / 32 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) Content General.......................................................................................................................................2 Revision History ........................................................................................................................ 3 1 Pin Configuration ...............................................................................................................5 2 Pin Description ...................................................................................................................6 2.1 Pin Map (16 QFN package) .................................................................................. 7 2.2 Pin Map (14 SOP package) .................................................................................. 8 3 Absolute Maximum Rating ................................................................................................ 9 4 ESD & Latch-up Characteristics ........................................................................................ 9 4.1 ESD Characteristics .............................................................................................. 9 4.2 Latch-up Characteristics ....................................................................................... 9 5 Electrical Characteristics ..................................................................................................10 6 Implementation of TS04 ...................................................................................................11 6.1 RBIAS & SRBIAS implementation ................................................................... 11 6.2 CS implementation ............................................................................................. 12 6.3 Output Circuit Implementation ........................................................................... 13 6.4 Internal reset operation ....................................................................................... 14 7 Recommended Circuit Diagram ....................................................................................... 15 7.1 Application Example (16 QFN).......................................................................... 15 7.2 Application Example (14 SOP) .......................................................................... 16 TS04(14 SOP) Application Example Circuit ................................................................... 16 7.3 Example – Power Line Split Strategy PCB Layout .......................................................... 17 8 MECHANICAL DRAWING ........................................................................................... 18 8.1 Mechanical Drawing of TS04 (16 QFN) ............................................................ 18 8.2 Mechanical Drawing of TS04 (14 SOP)............................................................. 20 9 MARKING DESCRIPTION ............................................................................................ 21 NOTES: ...................................................................................................................................22 AD Semiconductor Confidential 4 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 1 Pin Configuration TS04 (14 SOP) TS04-Q (16 QFN) ※ Drawings not to scale AD Semiconductor Confidential 5 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 2 Pin Description VDD, VSS Supply voltage and ground pin. CS1 ~ CS4 Capacitive sensor input pins. Dummy Internal noise monitoring input. OUT1 ~ OUT4 Parallel output port of CS1 ~ CS4. The structure of these parallel output port is open drain NMOS for active low output level operation. RBIAS Internal bias adjust input. AD Semiconductor Confidential 6 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 2.1 Pin Map (16 QFN package) Pin Number Name I/O 6 N.C. RBIAS GND CS1 CS2 CS3 Analog Input Analog Input Analog Input Analog Input 7 Dummy Analog Input 8 GND CS4 OUT1 OUT2 GND OUT3 OUT4 GND VDD Ground Analog Input Digital Output Digital Output Ground Digital Output Digital Output Power 1 2 3 4 5 9 10 11 12 13 14 15 16 Description Not connect Internal bias adjust input Connect to GND CH1 capacitive sensor input CH2 capacitive sensor input CH3 capacitive sensor input Internal noise monitoring input Do not connect to anywhere Supply ground CH4 capacitive sensor input Output1 for CS1 (Open Drain structure) Output2 for CS2 (Open Drain structure) Supply ground Output3 for CS3 (Open Drain structure) Output4 for CS4 (Open Drain structure) Connect to GND Power (2.5V~5.5V) AD Semiconductor Confidential Protection VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD VDD/GND VDD/GND VDD/GND VDD VDD/GND VDD/GND VDD/GND GND 7 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 2.2 Pin Map (14 SOP package) Pin Number Name I/O 6 GND VDD RBIAS CS1 CS2 CS3 Power Analog Input Analog Input Analog Input Analog Input 7 Dummy Analog Input 8 GND CS4 OUT1 OUT2 GND OUT3 OUT4 Ground Analog Input Digital Output Digital Output Ground Digital Output Digital Output 1 2 3 4 5 9 10 11 12 13 14 Description Connect to GND Power (2.5V~5.5V) Internal bias adjust input CH1 capacitive sensor input CH2 capacitive sensor input CH3 capacitive sensor input Internal noise monitoring input Do not connect to anywhere Supply ground CH4 capacitive sensor input Output1 for CS1 (Open Drain structure) Output2 for CS2 (Open Drain structure) Supply ground Output3 for CS3 (Open Drain structure) Output4 for CS4 (Open Drain structure) AD Semiconductor Confidential Protection VDD/GND GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD VDD/GND VDD/GND VDD/GND VDD VDD/GND VDD/GND 8 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 3 Absolute Maximum Rating Maximum supply voltage 6.0V 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. 4 4.1 ESD & Latch-up Characteristics ESD Characteristics Mode H.B.M M.M C.D.M 4.2 Polarity Max Reference 5000V VDD 3000V VSS 5000V P to P 500V VDD 300V VSS 500V P to P 500V DIRECT Polarity Max Reference Positive 200mA Negative -200mA Positive 8.00V Pos / Neg Pos / Neg - Latch-up Characteristics Mode I Test V supply over 5.0V 25mA AD Semiconductor Confidential 1.0V 9 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 5 Electrical Characteristics ▪ VDD=3.3V, Rb=510k, Sync Mode (Rsync = 2MΩ) (Unless otherwise noted), TA = 25℃ Characteristics Symbol Test Condition Min Typ Max Units 2.5 3.3 5.5 V Operating supply voltage VDD Current consumption IDD VDD= 3.3V RB=510k RSB=0 VDD= 5.0V RB=510k RSB=0 - 40 70 - 80 140 IOUT TA = 25℃ (Normal I2C Output) - - 4.0 ㎃ TA = 25℃, RB=510k - - 0.3∙VDD V - - 100 ㎊ 0.2 - - ㎊ Ω Digital Output maximum sink current Internal reset criterion VDD voltage Sense input capacitance range1 Minimum detective capacitance difference Output impedance (open drain) Self calibration time after system reset Sense input resistance range Recommended bias resistance range2 VDD_RST CS ΔC Cs = 10pF ZO ΔC > 0.2pF, Cs = 10pF ΔC < 0.2pF, Cs = 10pF - 12 30M - TCAL VDD = 3.3V RB = 510k - 100 - VDD = 5.0V RB = 510k - 80 - - 200 1000 VDD = 3.3V 200 510 820 VDD = 5.0V 330 620 1200 RS RB uA ms Ω kΩ 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. 2 The lower RB is recommended in noisy condition. AD Semiconductor Confidential 10 / 22 ADSemiconductor® TS04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 6 6.1 Implementation of TS04 RBIAS & SRBIAS implementation RBIAS