Programmable Touch Controller For Single Electrode Capacitance Sensors

The AD7148 is designed for use with capacitance Sensors imple- menting functions such as buttons, scroll bars, and wheels. The Sensors need only one PCB layer, enabling ultrathin applications. The AD7148 is an integrated capacitance-to-digital converter (CDC) with on-chip environmental calibration. The CDC has eight inputs channeled through a Switch matrix to a 16-bit, 250 kHz sigma-delta (-) converter. The CDC is capable of sensing changes in the capacitance of the external Sensors and uses this information to Register a Sensor activation. The external Sensors CAN be arranged as a series of buttons, as a scroll bar or wheel, or as a combination of Sensor types. By programming the Registers the user has full control over the CDC setup. By Analog Devices, Inc.
AD7148 's PackagesAD7148 's pdf datasheet

AD7148 Pinout, Pinouts
AD7148 pinout,Pin out
This is one package pinout of AD7148,If you need more pinouts please download AD7148's pdf datasheet.

AD7148 Application circuits
AD7148 circuits
This is one application circuit of AD7148,If you need more circuits,please download AD7148's pdf datasheet.

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