ASI AS1120
AS1120 is a 12 channels touch sensor IC capable of • Support Capacitive Touch Screen Applications detecting near-proximity or touch on 12 electrodes. It Low Cost Single Layer ITO Touch Screen allows electrodes to project independent sense field • Support Capacitive Touch Key Applications through any dielectric like glass, plastic, ceramic and • Support Capacitive Proximity Sensing Applications wood. It can accommodate a wide range of • 8 and 12 independent electrode inputs implementations due to its rich feature set.FEATURES
Overview● Analog and Digital – Mixed Mode IC
● 8 and 12 individual outputs (with QFN package)
● Simultaneous multi-electrode sensing
● I2C compatible interface with interrupt IRQ_L
● Selectable I2C address
● Multiple devices in a system allow for up to 24 keys
● Build-in algorithm for ease of use Sensitivity control per key Auto calibration Auto drift compensation Noise filtering and rejection Reduce BOM Cost Internal oscillator – no external crystal or oscillators Internal LDO – no external LDO or regulator No external tuning components Direct drive LED (2mA to 5mA) Environment Specification Operation Temperature: -400C to +950C Leading Performance in Capacitive Touch Sensor IC Implementations
● Touch Screen
● Touch Keys
● Touch Pads
● Switch Replacements
● Slider Replacements Typical
APPLICATIONS
● Audio/Video● PC peripherals
● Home appliance
● Gaming machine/console
● Security systems
● Instruments panels
● Access system
● Remote controls
● Lighting controls
● Single Laye...