Datasheet > MC34940EG/R2

MC34940EG/R2

更新时间： 2024-02-21 07:09:48

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		光电二极管
页数	文件大小	规格书
12页	261K
描述
Electric Field Imaging Device

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数据手册

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MC34940EG/R2 数据手册

Document number: MC34940

Rev 4, 11/2006

Freescale Semiconductor

Technical Data

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.

MC34940

ELECTRONIC FIELD

IMAGING DEVICE

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

Typical Applications

EG SUFFIX (Pb-FREE)

24-TERMINAL SOICW

CASE 751E-04

•

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

DGND

N/C

SHIELDEN

Garage Door Safety Sensing

PC Peripherals

Patient Monitoring

LEVEL

LPCAP

ROSC

VDDCAP

VPWR

VCCCAP

Point of Sale Terminals

Size Detection

TEST

GND

SHIELD

AGND

Liquid Level Sensing

ORDERING INFORMATION

Device Name

Temperature Range

Drawing

Package

Pin Connections

MC34940EG/R2

0 to 90°C

CASE 751E-04

SOICW-24

12 3 4 5 6 7...12

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