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DEMO1985MC34940E

Description
kit demo for mc34940e family
CategoryDevelopment board/suite/development tools   
File Size252KB,12 Pages
ManufacturerFREESCALE (NXP)
Environmental Compliance  
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DEMO1985MC34940E Overview

kit demo for mc34940e family

Freescale Semiconductor
Technical Data
Document number: MC34940
Rev 4, 11/2006
Electric Field Imaging Device
The MC34940 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 MC34940 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 MC34940 also
contains support circuits for a microcontroller unit (MCU) to allow the
construction of a two-chip E-field system.
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
MC34940
ELECTRONIC FIELD
IMAGING DEVICE
Typical Applications
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
ORDERING INFORMATION
Device Name
MC34940EG/R2
Temperature Range
0 to 90°C
Drawing
CASE 751E-04
Package
SOICW-24
EG SUFFIX (Pb-FREE)
24-TERMINAL SOICW
CASE 751E-04
DGND
N/C
SHIELDEN
C
B
A
LEVEL
LPCAP
ROSC
VDDCAP
VPWR
VCCCAP
N/C
E7
E6
E5
E4
E3
E2
E1
TEST
GND
SHIELD
AGND
Pin Connections
© Freescale Semiconductor, Inc., 2006. All rights reserved.

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