Small Package I2C Touch Screen Controller

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The AK4183 is a 4-wire resistive touch screen controller that incorporates SAR type A/D converter. The AK4183 operates down to 2.5V supply voltage in order to connect a low voltage drive processor. The AK4183 can detect the pressed screen location by performing two A/D conversions. In addition to location, the AK4183 also measures touch pressure. As the package size of 10 pin TMSOP is 4.0mm x 2.9mm this is much smaller than QFN and BGA package. AK4183 is the best fit for cellular phone, PDA, or other portable devices.

Key Features

• 12-bit SAR type A/D Converter with S/H circuit

• Low Voltage Operation (2.5V to 3.6V)

• I2C bus I/F Supports

(Standard mode 100 KHz, Fast mode 400 KHz)

• 4-wire resistive touch screen Interface

• Pen Pressure Measurement

• Auto Power Down

• Continuous Read Operation

• Low Power Consumption (91µA @Fast mode)

• Package 10pin TMSOP

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Block Diagram

Block Diagram

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