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ASI

AS1120 Datasheet Preview

AS1120 Datasheet

12 Channels Capacitive Touch Sensor IC

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AS1120
12 Channels Capacitive Touch Sensor IC
From Santa Clara, United States of America
Leading Performance: ESD HBM >8k Volts (Directly Applied to All IC Pins)
Operating Temperature up to >+950C
Features
Overview
• Analog and Digital – Mixed Mode IC
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.
• 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 Layer ITO Glass
• MP3 and MP4
ESD HBM Comparision
(Directly Applied to All IC Pins)
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
ESD: HBM 8k volts (Directly applied to all IC pins)
Leading Performance in Capacitive Touch
Sensor IC
Electrical Specification
Operating voltage:
2.0V to 5.5V
Low-power operating mode:
7uA to 15uA
Package Types (Lead Free and Green Packages)
Package
Part No. Channel (Size mm)
Types
QFN40
AS1120
12 6 x 6 x 0.8
TSSOP24
AS1120
12 7.8 x 4.5 x 1.1
Standby mode:
5uA
Standby: wakes up to normal mode in less than 32ms
Advanced Sensor Integrations
Rev 1.4 - May 2010
3945 Freedom Cir, Suite 710
Santa Clara, CA 95054
1




ASI

AS1120 Datasheet Preview

AS1120 Datasheet

12 Channels Capacitive Touch Sensor IC

No Preview Available !

Block Diagram
AS1120
12 Channels Capacitive Touch Sensor IC
From Santa Clara, United States of America
External VCC
2.0V – 5.5V
12 Capacitive Touch Sensor
Voltage
Clock
Inputs
and
Current
POR Oscillator LDO VCC_INT
Noise Filtering
Reference
Sources
SDA
SCL
I2C
Interface
User
Register
Block
Touch Recognition and
Noise Rejection
Algorithm
Interrupt
Individual
Direct
Output
12
Outputs
(QFN)
SLA
RST_L
IRQ_L
Advanced Sensor Integrations
Rev 1.4 - May 2010
3945 Freedom Cir, Suite 710
Santa Clara, CA 95054
2


Part Number AS1120
Description 12 Channels Capacitive Touch Sensor IC
Maker ASI
Total Page 12 Pages
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