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参数资料
| 型号： | MC34940EGR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC IMAGING DEVICE ELEC 24-SOICW |
| 标准包装： | 1,000 |
| 类型： | 图像传感器 |
| 输入类型： | 逻辑 |
| 输出类型： | 电压 |
| 电流 - 电源： | 8mA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 配用： | DEMO1985MC34940E-ND - KIT DEMO FOR MC34940E FAMILY |
Document number: MC34940
Rev 4, 11/2006
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2006. All rights reserved.
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
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
Temperature Range
Drawing
Package
MC34940EG/R2
0 to 90°C
CASE 751E-04
SOICW-24
MC34940
ELECTRONIC FIELD
IMAGING DEVICE
EG SUFFIX (Pb-FREE)
24-TERMINAL SOICW
CASE 751E-04
Pin Connections
N/C
E7
E6
E5
E4
E3
E2
E1
TEST
GND
SHIELD
AGND
DGND
N/C
SHIELDEN
C
B
A
LEVEL
LPCAP
ROSC
VDDCAP
VPWR
VCCCAP
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