LC717A10PJ

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: 570A (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. This document contain...