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Part Manufacturer: Analog Devices

Part Description: AD7142 Programmable Controller for Capacitance Touch Sensors Data Sheet (Rev. A)

Part Details:

Programmable Controller for Capacitance Touch Sensors AD7142 FEATURES FUNCTIONAL BLOCK DIAGRAM V V Programmable capacitance-to-digital converter REF­ REF+ TEST 29 28 27 36 ms update rate (@ maximum sequence length) CIN0 30 POWER-ON Better than 1 fF resolution RESET CIN1 31 LOGIC 14 capacitance sensor input channels CIN2 32CIN3 1 No external RC tuning components required 13 AVCC CIN4 2 Automatic conversion sequencer CIN5 3 14 AGND CIN6 4 HC IX 16-BIT CALIBRATION On-chip automatic calibration logic R CIN7 IT T - ENGINE 5 CDC CIN8 SW MA Automatic compensation for environmental changes 6 CIN9 7 17 DVCC Automatic adaptive threshold and sensitivity levels

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AD7142.pdf Datasheet