Korea GreenChip Capacitive touch IC - GT304L

Product Specification

The GT304L is one of the new GreenTouch3TM capacitive touch sensor series. Especially the GT304L can do capacitance sensing with 4 channels under above GreenTouch3TM engine operation.
Thanks to this epochal GreenTouch3TM engine, the applications will be more robust and problem free against EMC, EMl, H/W variations, voltage disturbance, temperature drift, humidity drift and so on. Especially,it doesn't make any issue against CS and EFT noise environments occurred in any touch applications.

The GT304L offers 4 LED drivers with 32 steps dimming controller. The OUT[1:4] ports can be used for PWM output for LED dimming control. It's very economical solution when the LED feedbacks are required because there is no additional material cost for LED control.

For the touch output result, the i2c or 1 to 1 direct output interface can be used. l2c interface might be useful when the McU lO or connector resource is not enough in the application.
The GT304L can be applied under wide supply voltage range from 2.5 V to 5.0v. And it has CTRL/A0 pin to select sensitivity options and I2C-bus slave address by making the pin connection to VDD and GND.

FEATURES:
4 channels cap.Sensing input
Embedded GreenTouch3TM Engine
-Analog compensation circuit
-Embedded digital noise filter
-Intelligent sensitivity calibration
-Embedded CS, EFT enhancer core
Two types of interface support
-1:1 direct Output mode.
-i2C interface mode
Provide interrupt function
LED driver (32 steps dimming control)
Sensitivity control by CTRL pin connection
Incredibly low power consumption
-Normal stand-by :145uA(@3.3V)
-Normal stand-by :160uA(@5.0V)
Wide supply voltage range: 2.5V to 5.0V single supply operation
Package type
-SOP14L
QFN16L
RoHS compliant

APPLICATIONS:
Multi key application - Door lock, Remote controller and Etc.
Portable Electronics -Mobile phone, MP3,PMP, PDA, Navigation, Digital Camera,Video Camera and Etc.
Multimedia Devices -TV, DvD player, Blue ray player, Digital photo frame, Home theater system and Etc.
Home Appliance -Refrigerator, Air cleaner, Air conditioner, Washing machine, Micro wave oven and Etc.
PC, OA and Others -PC, LcD monitor Fax, Copy machine, Lighting controls, Toys. Gaming devices and Etc