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MC34940

Features: · Supports up to 7 Electrodes· Shield Driver for Driving Remote Electrodes Through Coaxial· High-Purity Sine Wave Generator Tunable with External Resistor· Response Time Tunable with External Capacitor· Can support up to 28 touch pad sensors· Pb-Free and RoHS compliantApplication· Applia...

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SeekIC No. : 004415951 Detail

MC34940: Features: · Supports up to 7 Electrodes· Shield Driver for Driving Remote Electrodes Through Coaxial· High-Purity Sine Wave Generator Tunable with External Resistor· Response Time Tunable with Exter...

MC34940 Data Sheet

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Part Number:
MC34940
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

· Supports up to 7 Electrodes
· Shield Driver for Driving Remote Electrodes Through Coaxial
· High-Purity Sine Wave Generator Tunable with External Resistor
· Response Time Tunable with External Capacitor
· Can support up to 28 touch pad sensors
· Pb-Free and RoHS compliant


Application

· Appliance Control Panels and Touch Sensors
· Linear and Rotational Sliders
· Spill Over Flow Sensing Measurement
· Refrigeration Frost Sensing
· Industrial Control and Safety Systems Security
· Proximity Detection for Wake-Up Features
· Touch Screens
· Garage Door Safety Sensing
· PC Peripherals
· Patient Monitoring
· Point of Sale Terminals
· Size Detection
· Liquid Level Sensing


Pinout

Connection Diagram


Specifications

Rating Symbol Value Unit
Electrical Ratings
Peak VPWR Voltage VPWRPK 40 V
Double Battery
1 Minute Maximum TA = 30°C		 VDBLBAT 26.5 V
ESD Voltage
Human Body Model (CZAP = 100 pF, RZAP = 1500 W)
Machine Model (CZAP = 200 pF, RZAP = 0 W)
Charge Device Model (CDM), Robotic (CZAP = 4.0pF)		 VESD ±2000
±200
±1200		 V
Thermal Ratings
Storage Temperature TSTG -55 to 150 °C
Operating Ambient Temperature TA -0 to 90 °C
Operating Junction Temperature TJ -0 to 150 °C
Thermal Resistance
Junction-to-Ambient (1)
Junction-to-Case (2)
Junction-to-Board (3)		 RJA
RJC
RJB		 41
0.2
3.0		 °C/W
Soldering Temperature(4) TSOLDER 260 °C



Description

The 34940 is intended for cost-sensitive applications where non-contact sensing of objects is desired. When connected to external electrodes, an electric field is created. The 34940 detects objects in this electric field. The IC generates a low-frequency sine wave, which is adjustable by using an external resistor and is optimized for 120 kHz. The sine wave has very low harmonic content to reduce harmonic interference. The 34940 also contains support circuits for a microcontroller unit (MCU) to allow the construction of a two-chip E-field system.




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