Data Sheets   Rev A, 01/2007 (pdf, 1402K) Email PDF      Lead(Pb) - Free Data (Data Sheet Help)     Application Notes Evaluation Boards html(2k) Price, Packaging, and Availability

	Product Description
	The AD7142 and AD7142-1 are integrated capacitance-to-digital converters (CDCs) with on-chip environmental calibration for use in systems requiring a novel user input method. The AD7142 and...More
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Specifications Resolution (Bits) 16bit T-Put Rate 27.8SPS # Chan 14 Pwr Diss (max) 3.6mW Sleep Pwr Diss 65µW Supply V Single(+3.3), Single(+2.6 to +3.6), Single(+2.7), Single(+3) Ain Range ± 2 pF (Delta C) Product Description CAPTouch (TM) Programmable Controller for 2-Electrode Capacitance Sensor with SPI or I2C Interface Ref Int/Ext Int/Ext Find Similar Products

Functional Block Diagram Enlarge Symbols and Footprints  Other Diagrams: Pin Out Diagram AD7142 AD7142-1

Features Programmable capacitance-to-digital converter 36 ms update rate      (@ 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      sensitivity levels On-chip RAM to store calibration data SPI®-compatible serial interface (AD7142) I2C®-compatible serial interface (AD7142-1) Separate VDRIVE level for serial interface Interrupt output and GPIO 32-lead, 5 mm x 5 mm LFCSP_VQ 2.6 V to 3.6 V supply voltage Low operating current Full power mode: less than 1 mA Low power mode: 50 μA

 

Design Tools AD7142/AD7142-1 Evaluation Tools

 

Price, Packaging, and Availability Print Table AD7142 Model Options Model Status Package Pins Temp Range Price* (1000 pcs.) Available RoHS Compliant Samples Cart Purchase Cart AD7142ACPZ-1500RL7 Prodn 32 ld LFCSP (5x5mm CP-32-2) 32 Ind $1.37 9/5/2008 Y Material Declaration Add to Cart Add to Cart AD7142ACPZ-1REEL Prodn 32 ld LFCSP (5x5mm CP-32-2) 32 Ind $1.37 9/5/2008 Y Material Declaration Contact ADI Contact ADI AD7142ACPZ-500RL7 Prodn 32 ld LFCSP (5x5mm CP-32-2) 32 Ind $1.37 9/5/2008 Y Material Declaration Add to Cart Add to Cart AD7142ACPZ-REEL Prodn 32 ld LFCSP (5x5mm CP-32-2) 32 Ind $1.37 9/5/2008 Y Material Declaration Contact ADI Contact ADI The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. View Sales and Distribution Offices

 

 

Find Similar Products     Part# Resolution (Bits) T-Put Rate # Chan Supply V Pwr Diss (max) Input Base C (pF Max) Cin Range (pF) Pkg Type Price* (1000 pcs.) Sorry, there are no generics to display. * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information. Sorted by Resolution (Ascending), then # of Input Channels (Ascending)