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A demo board for the AD7142 complete with software and cables ftp://ftp.analog.com/pub/www/techSupport/designTools/evaluationBoards/downloads/AD7142_1EvalBoard.pdf Single(+2.6 to +3.6), Single(+2.7), Single(+3), Single(+3.3) CAPTouch (TM) Programmable Controller for 2-Electrode Capacitance Sensor with SPI or I2C Interface AD7142 Functional Block Diagram * Programmable capacitance-to-digital converter (@ maximum sequence length) Better than 1 fF resolution 14 capacitance sensor input channels No external RC tuning components required Automatic conversion sequencer * On-chip automatic calibration logic Automatic compensation for environmental changes Automatic adaptive threshold and * On-chip RAM to store calibration data * SPI®-compatible serial interface (AD7142) * I2C®-compatible serial interface (AD7142-1) * Separate VDRIVE level for serial interface * 32-lead, 5 mm x 5 mm LFCSP_VQ * 2.6 V to 3.6 V supply voltage Full power mode: less than 1 mA Low power mode: 50 μA (all content is the responsibility of the poster) |
neil_kane@oklahomaselltoday.com (Neil Kane) for more information. All emails will be forwarded to the poster's actual email address.