Capacitance-Digital-Converter LSI
Ordering number : EN*A2214
LC717A10PJ
Advance Information
CMOS LSI
Capacitance-Digital-Converter LSI for Electrostatic ...
Description
Ordering number : EN*A2214
LC717A10PJ
Advance Information
CMOS LSI
Capacitance-Digital-Converter LSI for Electrostatic Capacitive Touch Sensors
http://onsemi.com
Overview
The LC717A10PJ is a high-performance and low-cost capacitance-digital-converter LSI for electrostatic capacitive touch sensor, especially focused on usability. It has 16 channels capacitance-sensor input. This makes it ideal for use in the products that need many switches. Since the calibration function and the judgment of ON/OFF are automatically performed in LSI internal, it can make development time more short. A detection result (ON/OFF) for each input can be read out by the serial interface (I2C compatible bus or SPI). Also, measurement value of each input can be read out as 8-bit digital data. Moreover, gain and other parameters can be adjusted using serial interface.
Function
Detection system: Differential capacitance detection (Mutual capacitance type) Input capacitance resolution: Can detect capacitance changes in the femto Farad order Measurement interval (16 differential inputs): 30ms (Typ) (at initial configuration),
6ms (Typ) (at minimum interval configuration) External components for measurement: Not required Interface: I2C * compatible bus or SPI selectable. Current consumption: 570A (Typ) (VDD = 2.8V), 1.3mA (Typ) (VDD = 5.5V) Supply voltage: 2.6V to 5.5V Detection operations: Switch Packages: SSOP30
* I2C Bus is a trademark of Philips Corporation.
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