LC717A00AR: Capacitance-Digital-Converter for Electrostatic Capacitive Touch Sensors

The LC717A00AR is a high-performance, low-cost capacitance-digital-converter LSI for electrostatic capacitive touch sensor, especially focused on usability. It has 8 channels capacitance-sensor input. The built-in logic circuit can detect the state (ON/OFF) of each input and output the result. This makes it ideal for various switch applications. The calibration function is automatically performed by the built-in logic circuit during power activation or whenever there are environmental changes. In addition, since initial settings of parameters, such as gain, are configured, LC717A00AR can operate as stand-alone when the recommended switch pattern is applied. Also, since LC717A00AR has a serial interface compatible with I2C and SPI bus, parameters can be adjusted using external devices whenever necessary. Moreover, outputs of the 8-input capacitance data can be detected and measured as 8-bit data.

Features
  • Detection system: Differential capacitance detection (Mutual capacitance type)
  • Input capacitance resolution: Can detect capacitance changes in the femto Farad order
  • Measurement interval (8 differential inputs): 18ms (Typ) (at initial configuration),3ms (Typ) (at minimum interval configuration)
  • External components for measurement: Not required
  • Current consumption: 320 µA (Typ) (VDD = 2.8 V), 740 µA (Typ) (VDD = 5.5 V)
  • Supply voltage: 2.6 V to 5.5 V
  • Detection operations: Switch
  • Interface: I2C compatible bus or SPI selectable.
Benefits
  • High sensitivity performance - even wearing multiple layers of gloves, air gap, or thick materials
  • Design friendly - can be connected directly to a familiar MCU and execute stand alone operation
  • Automated built-in noise and environmental change compensation function technology
Applications
  • White goods
  • Black goods
  • PC peripherals
  • Office Automation
End Products
  • Washing machine
  • Refrigerator
  • Cooking appliances
  • TV
  • Printer
Software (4)
Document TitleDocument ID/SizeRevisionRevision Date
LC717A00 SoftwareLC717A00_Soft (2355kB)1
LC717A00ARGEVK GUI SoftwareLC717A00ARGEVK_GUI_SOFTWARE (1819kB)0
Touch Sensor Cap CheckerTouchSensor_CapChecker (378kB)0
Touch Sensor Line of Electric Force ViewerTouchSensor_EFViewer (1173kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
VCT28 3.5x3.5601AE (59.8kB)A
Tutorials (1)
Document TitleDocument ID/SizeRevisionRevision Date
Touch Sensor Solution for White Goods ApplicationTND6087/N (8812kB)0Nov, 2013
Application Notes (2)
Document TitleDocument ID/SizeRevisionRevision Date
Capacitance-Digital-Converter LSI for Electrostatic Capacitive Touch SensorsAND9197/D (2745kB)0Nov, 2014
LC717A00A Application NoteANDLC717A00/D (1046kB)3Jun, 2014
Evaluation Board Documents (8)
Document TitleDocument ID/SizeRevisionRevision Date
Capacitance-Digital-Converter IC for Electrostatic Capacitive Touch Sensors Evaluation Board User's ManualEVBUM2149/D (2486kB)4Sep, 2014
LC717A00AR01GEVB Quick Start Guide (English)LC717A00AR01GEVB_QUICK_START_GUIDE_E (705kB)0
LC717A00AR01GEVB Quick Start Guide (Japanese)LC717A00AR01GEVB_QUICK_START_GUIDE_J (924kB)0
LC717A00AR03GEVB Quick Start Guide (English)LC717A00AR03GEVB_QUICK_START_GUIDE_E (549kB)0
LC717A00AR03GEVB Quick Start Guide (Japanese)LC717A00AR03GEVB_QUICK_START_GUIDE_J (742kB)0
LC717A00ARGEVK Bill of Materials ROHS CompliantLC717A00ARGEVK_BOM_ROHS.PDF (135kB)1
LC717A00ARGEVK SchematicLC717A00ARGEVK_SCHEMATIC.PDF (533kB)0
MM-FT232H USB Conversion GuideMM-FT232H_USBConversionGuide (144kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Touch Sensors, Capacitance-Digital- Converter for Electrostatic CapacitiveENA2048/D (142.0kB)2
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
LC717A00ARGEVKActivePb-freeCapacitance Touch Sensor Operation Evaluation Boards
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LC717A00AR-NHActivePb-free Halide freeVCT-28601AE3Tape and Reel2000$1.1437
Specifications
ProductNumber of Sensing InputsNumber of Sensing OutputsInterface ControlProximity SensingVDD Min (V)VDD Max (V)IDD Typ (µA)
LC717A00AR-NH88I2C SPIYes2.65.5740 320
Touch Sensors, Capacitance-Digital- Converter for Electrostatic Capacitive (142.0kB) LC717A00AR
LC717A00 Software LC717A00AR
LC717A00ARGEVK GUI SOFTWARE - 1819 KB LC717A00ARGEVK
Touch Sensor Cap Checker LC717A10PJ
Touch Sensor Line of Electric Force Viewer LC717A10PJ
Touch Sensor Solution for White Goods Application LC717A00AR
Capacitance-Digital-Converter LSI for Electrostatic Capacitive Touch Sensors LC717A10PJ
LC717A00A Application Note LC717A00AR
EVBUM2149/D - 2486 KB LC717A00ARGEVK
LC717A00AR01GEVB QUICK START GUIDE E - 705 KB LC717A00ARGEVK
LC717A00AR01GEVB QUICK START GUIDE J - 924 KB LC717A00ARGEVK
LC717A00AR03GEVB QUICK START GUIDE E - 549 KB LC717A00ARGEVK
LC717A00AR03GEVB QUICK START GUIDE J - 742 KB LC717A00ARGEVK
LC717A00ARGEVK BOM ROHS LC717A00ARGEVK
LC717A00ARGEVK SCHEMATIC LC717A00ARGEVK
MM-FT232H USBConversionGuide - 144 KB LC717A00ARGEVK
VCT28 3.5x3.5 LC717A10AR