LC717A00AJ Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – Capacitance-Digital-Converter LSI for Electrostatic Capacitive Touch Sensors

Ordering number : ENA2089A
CMOS LSI
LC717A00AJ ^{Capacitance-Digital-Converter LSI}
for Electrostatic Capacitive Touch
Sensors
Overview
The LC717A00AJ 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,
LC717A00AJ can operate as stand-alone when the recommended switch pattern is applied.
Also, since LC717A00AJ 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: 320μA (Typ) (VDD = 2.8V), 740μA (Typ) (VDD = 5.5V)
• Supply voltage: 2.6V to 5.5V
• Detection operations: Switch
• Packages: SSOP30
• Interface: I²C * compatible bus or SPI selectable.
* I²C Bus is a trademark of Philips Corporation.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
Ver1.0.1
D1912HKPC 20121129-S00003/71112HK No.A2089-1/11