|
|
PDF ANSG08 Data sheet ( Hoja de datos )
| Número de pieza | ANSG08 | |
| Descripción | 8-Ch Auto Sensitivity Calibration Capacitive Touch Sensor | |
| Fabricantes | AD Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ANSG08 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
ANSG08
8-Ch Auto Sensitivity Calibration Capacitive Touch Sensor
SPECIFICATION V1.3
작성
검토
팀장
Marketing
QA
Approval
July, 2011
Confidential
AD Semiconductor
1 page  
ADSemiconductor®
ANSG08 (8-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
2 Pin Description
VDD, GND
Supply voltage and ground pin.
R.N.D
Radio frequency Noise Detection pin. Normally, R.N.D pin does not connect to anywhere.
But, in radio frequency noise environment, this pin must form a pattern line on PCB.
CS1 ~ CS8
Capacitive sensor input pins.
LCAP
Internal LDO output port.
D1 ~ D8
Parallel output ports of CS1~CS8 respectively / LED PWM drive output ports. The structure of these
parallel output ports is open drain NMOS for active low output level operation.
SCL, SDA
SCL is I2C clock input pin and SDA is I2C data input-output pin. These ports have internal pull-up resistor.
In case of not use, this pin must be not connected to any circuitry.
INT
Touch sensing interrupt output pin.
AD Semiconductor Confidential 4 / 39
5 Page 
ADSemiconductor®
ANSG08 (8-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
6 ANSG08 Implementation
6.1 Typical current consumption
ANSG08 uses internal bias circuit, so internal clock frequency and current consumption is fixed
and no external bias circuit is needed. Internal clock frequency and calibration speed can be
changed by I2C register setting4. Faster calibration speed needs more current consumption than
normal or slower calibration speed. Slow calibration speed isn’t recommended if it has not
problem of current consumption.
Internal bias circuit can make the circuit design simple and reduce external components.
6.2 CS implementation
ANSG08 has 256 step selections of sensitivity and internal surge protection resister. Sensitivity
of each sensing channel (CS) can be independently controlled on others. External components
of CS pin 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~S8) 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~S8) 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.
CS8<<
RS8
CS8
Touch PAD8
CS1<<
4 Refer to 8.2.6 Clock control register.
RS1
CS1
Touch PAD1
AD Semiconductor Confidential 10 / 39
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ANSG08.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ANSG08 | 8-Ch Auto Sensitivity Calibration Capacitive Touch Sensor | AD Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |