Purchase MC34940, In-stock MC34940 From SeekIC.
Part Number: MC34940
Description: The 34940 is intended for cost-sensitive applications where non-contact sensing of objects is desired....
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MC34940
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DataSheet
General Description
MC34940 General 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.
MC34940 Maximum Ratings
| 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 |
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 compliant
· 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
MC34940 Typical 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
· 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
MC34940 Connection Diagram
MC34940
PDF/DataSheet Download
- Datasheet: MC34940
- File Size: 301028 KB
- Manufacturer: FREESCALE
- Click here to Download
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MC34940 Relative Products
MC34929EPR2
IC MOTOR DRIVER BLDC 1A 24-QFN
MC34929EP
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MC34923EGR2
IC PWM MOTOR DRIVER FULL 24-SOIC
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MC34923EG
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MC34923
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