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ON Semiconductor LC717A00AR | Demoboard TS-GEVB

Capacitance-Digital-Converter for Electrostatic Capacitive Touch Sensors

Overview

TopologyOther Topology

Description

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)

  • High sensitivity performance - even wearing multiple layers of gloves, air gap, or thick materials
  • Input capacitance resolution: Can detect capacitance changes in the femto Farad order

    • Design friendly - can be connected directly to a familiar MCU and execute stand alone operation
  • Measurement interval (8 differential inputs):18ms (Typ) (at initial configuration),3ms (Typ) (at minimum interval configuration)

    • Automated built-in noise and environmental change compensation function technology
  • 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.

Typical applications

  • White goods
  • Black goods / PC peripherals / Office Automation

More information

Products

Order Code Data­sheet Simu­lation Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
Fl
(mm)
Technical ReferenceH
(mm)
Operation Force
(g)
Ingress Protection CodeActuator ColorPinsRowsGenderTypeIR
(A)
PackagingColor Samples
150060VS75000SPEC
7 files WL-SMCW SMT Mono-color Chip LED Waterclear 570 Bright Green 572 40 2 AlInGaP 140 0603 -40 up to +85 °C 1.6 0.8 0.7 Tape and Reel
150060RS75000SPEC
7 files WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 250 2 AlInGaP 140 0603 -40 up to +85 °C 1.6 0.8 0.7 Tape and Reel
885012206046SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)100 nF ±10% 16 0603 -55 up to +125 °C 3.55 GΩ X7R Class II 1.6 0.8 0.4 X7R0603104K016DFCT10000 0.8
885012206052SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)1 µF ±10% 16 0603 -55 up to +125 °C 100.1 GΩ X7R Class II 1.6 0.8 0.4 X7R0603105K016DFCT10000 0.8
885012107014SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)10 µF ±20% 16 0805 -55 up to +85 °C 100.01 GΩ X5R Class II 2 1.25 0.5 X5R0805106M016DFCT10000 1.25
885012208041SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)10 µF ±10% 16 1206 -55 up to +125 °C 100.01 GΩ X7R Class II 3.2 1.6 0.5 X7R1206106K016DFCT10000 1.6
61301221021SPEC
6 files WR-PHD 2.54 mm THT Angled Dual Pin Header -40 up to +105 °C1000 MΩ 15.24 12 Dual Pin Header Angled 3 Bag Black
430182043816SPEC
5 files WS-TASV SMT Tact Switch 6x6 mm 12 -40 up to +85 °C100 MΩ 4.3 160 None Black 0.05 Tape and Reel
60900213421SPEC
3 files WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point -40 up to +125 °C1000 MΩ 2.44 1 Jumper 3 Bag Black
61300211121SPEC
6 files WR-PHD 2.54 mm THT Pin Header -40 up to +105 °C1000 MΩ 5.08 2 Single Pin Header Straight 3 Bag
61300311121SPEC
6 files WR-PHD 2.54 mm THT Pin Header -40 up to +105 °C1000 MΩ 7.62 3 Single Pin Header Straight 3 Bag
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
Fl
(mm)
Technical ReferenceH
(mm)
Operation Force
(g)
Ingress Protection CodeActuator ColorPinsRowsGenderTypeIR
(A)
PackagingColor Samples