2.5 - 5.0 V 10 Bit SPI/I2C Touch Screen Controller - SSOP-20

Mfr Part#: AR1021-I/SS
Mounting Method:  Surface Mount
Package Style:  SSOP-20
Packaging:  TUBE
Std Packaging Qty:  67



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$1.44 USD (each)
67+ $1.44


Qty in Stock : 737
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Min. Order Qty: 67
Multiple of: 67
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Product Highlight

  • Technology: Other
  • Interface: I2C/SPI

The AR1021-I/SS is a complete, easy to integrate, cost-effective and universal touch screen controller chip. Available in a SSOP-20 package.

The AR1000 Series has sophisticated proprietary touch screen decoding algorithms to process all touch data, saving the host from the processing overhead. Providing filtering capabilities beyond that of other low-cost devices, the AR1000 delivers reliable, validated and calibrated touch coordinates.


  • RoHS Compliant
  • Power-Saving Sleep mode
  • Industrial Temperature Range
  • Built-in Drift Compensation Algorithm
  • 128 Bytes of User EEPROM
  • Operating Voltage: 2.5-5.0 V ±5%
  • Standby Current:
  • 5V: 85 uA, typical; 125 uA (maximum)
  • 2.5V: 40 uA, typical; 60 uA (maximum)
  • Operating “No touch” Current:
  • 3.0 mA (typical)
  • Operating “Touch” Current:
  • 17 mA, typical, with a touch sensor having 200 Ω layers
  • Actual current is dependent on the touch sensor used
  • AR1011/AR1021 Brown-Out Detection (BOR) set to 2.2V
  • 4-Wire, 5-Wire and 8-Wire Analog Resistive
  • Lead-to-Lead Resistance: 50-2,000typical)
  • Layer-to-Layer Capacitance: 0-0.5 uF
  • Touch Sensor Time Constant: 500 us (maximum)
  • 10-bit Resolution (maximum)


  • Mobile communication devices
  • Personal Digital Assistants (PDA)
  • Global Positioning Systems (GPS)
  • Touch Screen Monitors
  • Media Players
  • Portable Instruments
  • Point of Sale Terminals

View the List of available AR10 Series of Touch Screen Controller Chip

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