当前位置：文档之家 › AD7150中文资料

AD7150中文资料

  • 格式：pdf
  • 大小：271.22 KB
  • 文档页数：24

GENERAL DESCRIPTION
The AD7150 delivers a complete signal processing solution for capacitive proximity sensors, featuring an ultra low power converter with fast response time.
EXC1 CIN2
MUX
VDD
Σ−∆ CDC
DIGITAL FILTER
AD7150
THRESHOLD
SERIAL INTERFACE
SCL SDA
OUT1
EXC2
EXCITATION
THRESHOLD
GND
Figure 1.
OUT2
Rev. PrD, 8. November 2006
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
元器件交易网
AD7150
TABLE OF CONTENTS
Preliminary Specifications............................................................... 3 Timing Specifications....................................................................... 4 Absolute Maximum Ratings............................................................ 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 7 Architecture and Main Features ..................................................... 8
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700

Fax: 781.461.3113 © 2006 Analog Devices, Inc. All rights reserved.
2-wire serial interface (I2C®-compatible)
Operating temperature: -40°C to +125°C
10-lead uSOIC package
APPLICATIONS
Proximity sensing Contact-less switching Position detection Level detection
元器件交易网
Preliminary Technical Data
Ultra Low Power, 2 Channel, Capacitance Converter for Proximity Sensing AD7150
FEATURES
Ultra low power 3.3 V, 90 uA
The AD7150 uses Analog Devices’ capacitance to digital converter (CDC) technology, which combines features important for interfacing to real sensors, such as a high input sensitivity and a hiarasitic ground capacitance and leakage current.
The AD7150 operates from a 3.3 V power supply. It is specified over the temperature range of -40°C to +125°C.
CSENS1 CSENS2
FUNCTIONAL BLOCK DIAGRAM
CIN1
Response time 10 ms Adaptive environmental compensation Two independent capacitance input channels
Sensor capacitance (CSENS) 0 up to 14 pF Sensitivity to 0.8 fF EMC tested Two modes of operation: Standalone with fixed settings Interfaced to a uC for user-defined settings Two proximity detection output flags
By default, the AD7150 operates in standalone mode using the fixed power up settings and indicates detection on two digital outputs. Alternatively, the AD7150 can be interfaced to a uC via I2C interface, the internal registers can be programmed with user-defined settings and the data and status can be read from the part.
Overview........................................................................................ 8 Capacitance to Digital Converter............................................... 8 CAPDAC ....................................................................................... 8 Comparator and Threshold Modes............................................ 9 Adaptive Threshold...................................................................... 9 Data Average ................................................................................. 9 Sensitivity .................................................................................... 10 Hysteresis..................................................................................... 10 Timeout........................................................................................ 10 Auto CAPDAC adjustment ....................................................... 10 Power Down Timer .................................................................... 10 Register Descriptions ..................................................................... 11 Status Register ............................................................................. 12 Data Registers ............................................................................. 12 Average Registers........................................................................ 12 Fixed Threshold Registers ......................................................... 12

合集下载

AD转换器ICL7135中文资料

AD转换器ICL7135中文资料

(3)与选通和数据输出相关的引脚(共9脚)
.B8～B1:BCD码输出.B8为高位,对应BCD码;
.D5:万位选通;
.D4～D1:千,百,十,个位选通.
ICL7135主要参数：
电源电压
V+
+6V
温度范围
0℃to 70℃
V-
-9V
电压
V+ to V-
最大结温
图3 ICL7135典型应用
ICL7135与MCS-51的连接可参照MCLl4433与处理器连接方法,依次读出万位到个位的BCD码.本节采用另外一种方法,重点推荐采用计数法进行A/D"转换"的方法.ICL7135与MCS-51连接如图4所示.
图4 1CL7135与MCS51连接
(1)硬件连接.
设MCS-51的外接晶振fosc=6MHz,则ALE输出约为1MHz,将ALE信号输入CD4040的CLK引脚.CD4040是由12个T型触发器组成的串行二进制计数器/分频器,有12个分频输出端,Q1～Q12,最大分频系数为212=4096,由于CD4040的所有输入,输出端都设有缓冲器,所以有较好的噪声容限.CD4040的Q2输出是对ALE进行了22=4分频,故输入ICL7135的时钟为1MHz/4=250kHz,可得TCP=1/250ms=0.004mS,由于一次转换最多需(10001+10000+20001)=40002个脉冲,故转换一次需0.004×40002≈160ms,因此ICL7135的转换速度为6.25次/s.选择这一频率,以牺牲ICL7135抗工频干扰为代价,使MCS-51的16位计数器能一次计数A/D"转换"的CP脉冲数.在满电压输入时,BUSY宽度为正向积分10000个CP脉冲,反向积分20001个CP脉冲(总计30001个CP脉冲).在fosc=6MHz情况下,8031内部定时频率为6MHz/12=500kHz,比ICL7135时钟频率250kHz大了1倍.在满刻度电压输入时,定时器计数值应为30 001×2=60002,不超过MCS-51的16位计数的最大可计数值(216),故在BUSY高电平期间,计数器计数值除以2,再减去10000(2710H),余数就是被测电压的数值.
AMC7150

AMC7150


表目錄
表一 AMC7150EKM評估工具版元件列表…………………………………….………………...……….. 1 表二 Power LED 規格表………………………………………………………….….…………...……….. 1 表三 以350mA之驅動電流驅動串聯連接之LED所需之輸入電壓………………….………….……….. 6 表四 使用Jumper選擇LED1和LED2之連接方式達成4種點亮模式………………….………………….. 12 表五 AMC7150EKM評估工具版在-40℃與+125℃環境溫度下皆可正常運作……..……………...……15 表六 以4顆二極體串接模擬LED，檢驗AMC7150在環境溫度+125℃下之工作狀況…………...….…. 16
1000mA
DC Forward Current
350mA
Copyright © 2004 by ADD Microtech Corp.
1
Version 1.0 - Nov. 2, 2004

AAN-002
4. Topology
AMC7150EKM採用降壓型轉換器(Buck converter)電路架構驅動Power LED，降壓 型轉換器是最基本的電源轉換器，由一個功率晶體、二極體、LC濾波器與負載所組成， 平均輸出電壓小於直流輸入電壓( Vout < Vcc )，可提供單極性的輸出電壓與單相的輸出 電流。降壓型轉換器可以應用在輸入與輸出端不需隔離且輸入電壓恆比輸出電壓高的場 合，在一般電路中較不常見，主要還是以衍生型的電路架構如返馳式、順向式、推挽式、 半橋式或全橋式轉換器的應用最為普及。
AAN-002
AMC7150 1.5A Power LED Driver
adi中英文技术资料

adi中英文技术资料

AD中英文技术资料Ecardsh整理，2011年8月3日型号厂家功能说明AD5361 ADI 16通道、14-Bit、串行输入、电压输出型DACAD5362 ADI 八通道、14-Bit、串行输入、电压输出型DACAD5363 ADI 八通道、14-Bit、串行输入、电压输出型DACAD536A ADI Integrated Circuit True RMS-to-DC ConverterAD537 ADI Integrated Circuit Voltage-to-Frequency ConverterAD5370 ADI 40通道、16-Bit、串行输入、电压输出型DACAD5371 ADI 40通道、14-Bit、串行输入、电压输出型DACAD5372 ADI 32通道、14-Bit、串行输入、电压输出型DACAD5373 ADI 32通道、14-Bit、串行输入、电压输出型DACAD5378 ADI 32-Channel 14-Bit Serial/Parallel Bipolar D/A ConverterAD5379 ADI 40-Channel 14-Bit Bipolar Voltage-Output D/A ConverterAD537S ADI Aerospace Voltage to Frequency Converter， ±30V to 150kHzAD537S ADI Aerospace Voltage to Frequency Converter， ±30V to 150kHzAD538 ADI Real-Time Analog Computational Unit (ACU)AD5380 ADI 40-Channel 14-Bit 3 V/5 V Single-Supply Voltage-Output DACAD5381 ADI 40-Channel 12-Bit 3 V/5 V Single-Supply Voltage-Output DACAD5382 ADI 32-Channel 14-Bit 3 V/5 V Single-Supply Voltage-Output DACAD5383 ADI 32-Channel 12-Bit 3 V/5 V Single-Supply Voltage-Output DACAD5384 ADI 40-Channel， 3 V/5 V Single Supply，14-Bit， Serial Voltage-Output DAC AD539 ADI Wideband Dual-Channel Linear Multiplier/DividerAD5390 ADI 16-Channel 14-Bit 3 V/5 V Single-Supply Voltage-Output DACAD5391 ADI 16-Channel 12-Bit 3V/5V Single-Supply Voltage-Output DACAD5392 ADI 8-Channel 14-Bit Single-Supply Voltage-Output DACAD5398 ADI 120 mA、吸电流、10-Bit、具有I2C接口的数模转换器AD5398A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD5398A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD5398A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD5399 ADI Two's Complement， Dual 12-Bit DACs， Internal REFAD5405 ADI Dual 12-Bit ， High Bandwidth， Multiplying DAC with 4 Quadrant Resistors and Parallel InterfaceAD5410 ADI Single Channel， 12-Bit， Serial Input， Current Source DACAD5412 ADI Single Channel， 12-Bit， Serial Input， Current Source &amp; Voltage Output DACAD5415 ADI Dual 12-Bit，High Bandwidth，Multiplying DAC with 4 Quadrant Resistors and Serial InterfaceAD5420 ADI Single Channel， 16-Bit， Serial Input， Current Source DACAD5422 ADI 单通道，16-Bit， 串行输入， 电流源与电压输出数模转换器AD5424 ADI High Bandwidth CMOS 8-Bit Parallel Interface Multiplying D/A Converter AD5425 ADI High Bandwidth， CMOS 8-Bit Serial Interface Multiplying D/A Converter AD5426 ADI High Bandwidth CMOS 8-Bit Serial Interface Multiplying D/A Converter AD5428 ADI Dual 8-Bit， High Bandwidth Multiplying DACs with Parallel InterfaceAD5429 ADI Dual 8-Bit， High Bandwidth Multiplying D/A Converter With Serial InterfaceAD5432 ADI High Bandwidth CMOS 10-Bit Serial Interface Multiplying D/A Converter AD5433 ADI High Bandwidth CMOS 10-Bit Parallel Interface Multiplying D/A ConverterAD5439 ADI Dual 10-Bit， High Bandwidth Multiplying D/A Converter With Serial InterfaceAD5440 ADI Dual 10-Bit， High Bandwidth Multiplying DACs with Parallel Interface AD5441 ADI 12-Bit串行输入乘法型数模转换器AD5441 ADI 12-Bit串行输入乘法型数模转换器AD5443 ADI High Bandwidth CMOS 12-Bit Serial Interface Multiplying D/A Converter AD5444 ADI 12-Bit High Bandwidth Multiplying DAC with Serial InterfaceAD5445 ADI High Bandwidth CMOS 12-Bit Parallel Interface Multiplying D/A Converter AD5446 ADI 14-Bit High Bandwidth Multiplying DAC with Serial InterfaceAD5447 ADI Dual 12-Bit， High Bandwidth Multiplying DACs with Parallel InterfaceAD5449 ADI Dual 12-Bit， High Bandwidth Multiplying D/A Converter With Serial InterfaceAD5450 ADI 8-Bit High Bandwidth Multiplying DACs with Serial InterfaceAD5451 ADI 10-Bit High Bandwidth Multiplying DACs with Serial InterfaceAD5452 ADI 12-Bit High Bandwidth Multiplying DACs with Serial InterfaceAD5453 ADI 14-Bit High Bandwidth Multiplying DACs with Serial InterfaceAD548 ADI Precision， Low Power BiFET Op AmpAD549 ADI Ultralow Input-Bias Current Operational AmplifierAD5516 ADI 16-Channel 12-Bit Bipolar Voltage-Output DAC with 14-Bit Increment Mode AD5520 ADI Per-pin Parametric Measurement Unit / Source Measure UnitAD5522 ADI 集成16位电平设置DAC的四参数测量单元AD5530 ADI Serial Input， Voltage Output 12-Bit D/A ConverterAD5531 ADI Serial Input， Voltage Output14-Bit D/A ConverterAD5532 ADI 32-Channel 14-Bit Bipolar Voltage-Output DACAD5532B ADI 32-Channel 14-bit Bipolar Voltage-Output DACAD5532HS ADI 32-Channel 14-Bit bipolar DAC with High Speed 3-Wire Serial Interface AD5533 ADI 32-Channel Infinite Sample-and-HoldAD5533B ADI 32-Channel Infinite Sample-and-HoldAD5535 ADI 32-Channel， 14-Bit DAC with Fullscale Output Voltage Programmable from 50 V to 200 VAD5541 ADI 16-Bit Voltage-Output DAC in SO-8 PackageAD5542 ADI 16-Bit Bipolar-Voltage-Output DAC with Kelvin SensingAD5543 ADI 16-Bit DAC in μSOIC-8 PackageAD5544 ADI Precision QUAD 16-Bit D/A ConverterAD5545 ADI Precision DUAL 16-Bit and 14-Bit DACs in Compact TSSOP Packages AD5546 ADI Current-Output Parallel-Input， 16-Bit Digital-to-Analog Converter AD5547 ADI Dual Current-Output Parallel-Input， 16-Bit DACAD5551 ADI 5 V， Serial-Input， Voltage-Output 14-Bit DACAD5552 ADI 5 V， Serial-Input， Voltage-Output 14-Bit DAC With Bipolar Output CapabilityAD5553 ADI 14-Bit DAC in μSOIC-8 PackageAD5554 ADI Precision QUAD 14-Bit D/A ConverterAD5555 ADI Precision DUAL 16-Bit 14-Bit-DACs in Compact TSSOP Packages AD5556 ADI Current-Output Parallel-Input， 14-Bit Digital-to-Analog Converter AD5557 ADI Dual Current-Output Parallel-Input， 14-Bit DACAD5560 ADI 1.2A Programmable Device Power Supply with Integrated 16-bit Level Setting DACsAD5560 ADI 1.2A Programmable Device Power Supply with Integrated 16-bit Level Setting DACsAD5564 ADI This product is obsolete and replaced by the AD5532. (9/99) AD557 ADI DACPORT Low Cost， Complete μP-Compatible 8-Bit DACAD5570 ADI True Accuracy， 16-Bit ±12 V/±15 V， Serial Input Voltage Output D/A ConverterAD558 ADI Voltage-output 8-bit digital-to-analog converter，including output amplifier，full microprocessor interface and precisionAD5582 ADI +15 V， Quad， Parallel Input， 12-Bit D/A Converter AD5583 ADI +15V， Quad， Parallel Input， 10-Bit D/A Converter AD5590 ADI 16输入/16输出模拟I/O端口，集成放大器AD5601 ADI 2.7 V to 5.5 V，&lt;100 μA，8-Bit <em>nano</em>DAC?，SPI Interface in SC70 PackageAD5602 ADI 2.7 V to 5.5 V， &lt;100 μA， 8-Bit <em>nano</em>DAC? D/A Converter with I2C Compatible Interface， Tiny SC70 PackageAD561 ADI Low Cost 10-Bit Monolithic D/A ConverterAD5611 ADI 2.7 V to 5.5 V，&lt;100 μA，10-Bit <em>nano</em>DAC?，SPI Interface in SC70 PackageAD5612 ADI 2.7 V to 5.5 V，&lt;100 μA，10-Bit <em>nano</em>DAC? D/A Converter with I2C Compatible Interface， Tiny SC70 PackageAD561S ADI Aerospace 10-Bit， Current Output DACAD5620 ADI 3 V/5 V， 12-Bit <em>nano</em>DAC? Converter with 5 ppm/°C On-Chip Reference in Sot-23AD5621 ADI 2.7 V to 5.5 V，&lt;100 μA，12-Bit <em>nano</em>DAC?，SPI Interface in SC70 PackageAD5622 ADI 2.7 V to 5.5 V，&lt;100 μA，12-Bit <em>nano</em>DAC? D/A Converter with I2C Compatible Interface， Tiny SC70 PackageAD5623R ADI Dual 12-Bit <em>nano</em>DAC? with 5 ppm/°C On-Chip ReferenceAD5624 ADI 2.7 V to 5.5 V， 450 μA， Rail-to-Rail Output， Quad， 12-/16-Bit <em>nano</em>DACs?AD5624R ADI Quad，12-Bit <em>nano</em>DAC? with 5ppm/°C On-Chip Reference AD5625 ADI Quad， 12-Bit <em>nano</em>DACs?， I2C? InterfaceAD5625R ADI Quad， 12-Bit <em>nano</em>DACs? with 5 ppm/°C On-Chip Reference，I2C? InterfaceAD5626 ADI 5 V，12-Bit <em>nano</em>DAC?，串行接口，采用MSOP与LFCSP 封装AD5627 ADI Dual， 12-Bit nanoDAC? with I2C? InterfaceAD5627R ADI Dual，12-Bit nanoDAC? with 5 ppm/°C On-Chip Reference，I2C? InterfaceAD5628 ADI Octal， 12-Bit D/A Converter with 5 ppm/°C On-Chip Reference in 14-Lead TSSOPAD563 ADI ObsoleteAD5640 ADI 3 V/5 V， 14-Bit <em>nano</em>DAC? Converter with 5 ppm/°C On-Chip Reference in Sot-23AD5641 ADI 2.7 V to 5.5 V，&lt;100 μA，14-Bit <em>nano</em>DAC，SPI Interface in SC70 PackageAD5643R ADI Dual 14-Bit <em>nano</em>DAC? with 5 ppm/°C On-Chip Reference AD5644R ADI Quad， 14-Bit <em>nano</em>DAC? with 5ppm/°C On-Chip ReferenceAD5645R ADI Quad， 14-Bit <em>nano</em>DACs? with 5 ppm/°C On-Chip Reference，I2C? InterfaceAD5647R ADI Dual，14-Bit nanoDAC? with 5 ppm/°C On-Chip Reference，I2C? InterfaceAD5648 ADI Octal， 14-Bit D/A Converter with 5 ppm/°C On-Chip Reference in 14-Lead TSSOPAD565A ADI 12-bit Digital-to-Analog Converters， with Zener ReferenceAD565S ADI Aerospace 12-Bit， Current Output， Complete High Speed DACAD5660 ADI 3 V/5 V， 16-Bit <em>nano</em>DAC? Converter with 5 ppm/°C On-Chip Reference in a Sot-23AD5662 ADI 2.7-5.5V， 16-Bit <em>nano</em>DAC? Converter in a Sot-23AD5663 ADI 2.7 V to 5.5 V， 250 μA， Rail-to-Rail Output， Dual 16-Bit <em>nano</em>DAC?AD5663R ADI Dual 16-Bit <em>nano</em>DAC? with 5 ppm/°C On-Chip ReferenceAD5664 ADI 2.7 V to 5.5 V， 450 μA， Rail-to-Rail Output， Quad， 12-/16-Bit <em>nano</em>DACs?AD5664R ADI Quad， 16-Bit <em>nano</em>DAC? with 5ppm/°C On-Chip Reference AD5665 ADI Quad， 16-Bit <em>nano</em>DACs?， I2C? InterfaceAD5665R ADI 片上带5ppm/°C基准源和I2C接口的16bit 四nanoDAC?AD5666 ADI Quad， 16 Bit D/A Converter with 10ppm/°C Max On-Chip Reference in 14-Lead TSSOPAD5667 ADI Dual， 16-Bit nanoDAC? with I2C? InterfaceAD5667R ADI Dual，16-Bit nanoDAC? with 5 ppm/°C On-Chip Reference，I2C? InterfaceAD5668 ADI Octal， 16-Bit D/A Converter with 5 ppm/°C On-Chip Reference in 16-Lead TSSOPAD567 ADI 12-Bit Current Output， Microprocessor-Compatible DACAD5678 ADI 4 x 12-Bit and 4 × 16-Bit Octal D/A Converter with On-Chip Reference in 14-Lead TSSOPAD568 ADI 12-Bit Ultrahigh Speed Monolithic D/A ConverterAD5680 ADI 5 V 18-Bit <em>nano</em>DAC? in a SOT-23AD569 ADI 16-Bit Monotonic Voltage Output D/A ConverterAD570 ADI 8-Bit Successive Approximation Analog-to-Digital ConverterAD571 ADI 10-Bit， A/D Converter， Complete with Reference and Clock AD571S ADI Aerospace 10-Bit Complete Anolog to Digital ConverterAD572 ADI 12-Bit Successive Approximation Integrated Circuit A/D ConverterAD5722 ADI Complete，Dual，12-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5722 ADI Complete，Dual，12-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5722R ADI Complete，Dual，12-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5724 ADI Complete，Quad，12-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACsAD5724 ADI Complete，Quad，12-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACsAD5724R ADI Complete，Quad，12-Bit，Serial Input，Unipolar/Bipolar Voltage OutputDACAD5725 ADI 12-bit、并行输入、单极性/双极性、电压输出四DACAD5726 ADI Quad， 12-Bit， Serial Input， Unipolar/Bipolar， Voltage Output DAC AD573 ADI 10-bit successive approximation ADC.AD5732 ADI Complete，Dual，14-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5732 ADI Complete，Dual，14-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5732R ADI Complete，Dual，14-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5734 ADI Complete，Quad，14-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACAD5734 ADI Complete，Quad，14-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACAD5734R ADI Complete，Quad，14-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACAD5744 ADI Complete，Quad，14-Bit，High Accuracy，Serial Input，Bipolar Voltage Output D/A ConverterAD5744R ADI Complete Quad， 14-Bit， High Accuracy， Serial Input， Bipolar Voltage Output D/A ConverterAD5744R ADI Complete Quad， 14-Bit， High Accuracy， Serial Input， Bipolar Voltage Output D/A ConverterAD574A ADI Complete 12-Bit A/D ConverterAD574S ADI Aerospace 12-Bit-ADC w/Microprocessor InterfaceAD575 ADI ObsoleteAD5750 ADI AD5750 电流/电压输出驱动器，输出范围可编程，适合工业应用 AD5750 ADI AD5750 电流/电压输出驱动器，输出范围可编程，适合工业应用AD5751 ADI 电流/电压输出驱动器，单电源供电，60 V电压范围，输出范围可编程，适合工业应用AD5751 ADI 电流/电压输出驱动器，单电源供电，60 V电压范围，输出范围可编程，适合工业应用AD5752 ADI Complete，Dual，16-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5752 ADI Complete，Dual，16-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5752R ADI Complete，Dual，16-Bit，Serial Input，Unipolar/Bipolar，Voltage Output DACAD5754 ADI 完全4通道、16 Bit、串行输入、单极/双极性电压输出数模转换器AD5754R ADI Complete，Quad，16-Bit，Serial Input，Unipolar/Bipolar Voltage Output DACAD5762R ADI 16-Bit，双通道，高精度， 串行输入， 双极性电压输出型DAC AD5763 ADI Complete Dual， 16-Bit， High Accuracy， Serial Input， ±5V DACsAD5764 ADI Complete Quad， 16-Bit， High Accuracy， Serial Input， Bipolar Voltage Output DACsAD5764R ADI Complete Quad， 16-Bit， High Accuracy， Serial Input， Bipolar Voltage Output D/A ConverterAD5764R ADI Complete Quad， 16-Bit， High Accuracy， Serial Input， Bipolar Voltage Output D/A ConverterAD5765 ADI Complete Quad， 16-Bit， High Accuracy， Serial Input， ±5V DACs AD580 ADI High Precision 2.5 V IC ReferenceAD581 ADI High Precision 10 V IC ReferenceAD582 ADI Low-Cost Sample-and-Hold AmplifierAD5821 ADI 120 mA， Current Sinking， 10-Bit， I2C? DACAD5821A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD5821A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD5821A ADI 120 mA， Current Sinking， 10-Bit， I2C DACAD583 ADI ObsoleteAD584 ADI Pin Programmable Precision Voltage ReferenceAD584S ADI Aerospace Pin Programmable Precision Voltage ReferenceAD585 ADI Complete Monolithic SHA Circuit.AD585S ADI Aerospace High Speed， Precision Sample-and-Hold AmplifierAD586 ADI High Precision 5 V ReferenceAD587 ADI High Precision 10 V ReferenceAD588 ADI High Precision Voltage ReferenceAD589 ADI Two-Terminal IC 1.2 V ReferenceAD589S ADI Aerospace Precision 1.2 Volt IC ReferenceAD590 ADI Two Terminal IC Temperature TransducerAD590S ADI Aerospace 2 Terminal Temperature Transducer， 1uA/°KAD592 ADI Current Output – Precision IC Temperature TransducerAD5930 ADI Programmable Frequency Sweep and Output Burst Waveform Generator AD5932 ADI 可编程单扫描波形发生器AD5933 ADI 1 MSPS，12 bit阻抗转换器和网络分析器AD5934 ADI 250 kSPS 12-Bit Impedance Converter Network AnalyzerAD594 ADI Monolithic Thermocouple Amplifier with Cold Junction Compensation Pretrimmed for Type J ThermocouplesAD595 ADI Monolithic Thermocouple Amplifier with Cold Junction Compensation Pretrimmed for Type K ThermocouplesAD596 ADI Thermocouple Conditioner and Setpoint Controller Operates with Type J ThermocoupleAD597 ADI Thermocouple Conditioner and Setpoint Controller Operates with Type K ThermocoupleAD598 ADI LVDT Signal ConditionerAD600 ADI Dual， Low Noise， Wideband Variable Gain Amplifier， 0 dB To +40 dB GainAD602 ADI Dual，Low Noise，Wideband Variable Gain Amplifier，-10 dB To +30 dB GainAD6021 ADI Othello One ET? Quad Band EDGE Transmit ModulatorAD603 ADI Low Noise， 90 MHz Variable Gain AmplifierAD604 ADI Dual， Ultralow Noise Variable Gain AmplifierAD605 ADI Dual， Low Noise， Single-Supply Variable Gain AmplifierAD606 ADI 50 MHz， 80 dB Demodulating Logarithmic Amplifier with Limiter Output AD607 ADI Low Power Mixer/AGC/RSSI 3V Receiver IF SubsystemAD608 ADI Low Power Mixer/Limiter/RSSI 3 V Receiver IF SubsystemAD620 ADI Low Drift， Low Power Instrumentation Amp with Set Gains of 1 to 10000 AD621 ADI Low Drift， Low Power Instrumentation Amp with fixed gains of 10 and 100 AD622 ADI 低成本仪表放大器AD623 ADI Single Supply， Rail-Rail， Low Cost Instrumentation AmplifierAD624 ADI High Precision， Low Noise Instrumentation AmplifierAD625 ADI Programmable Gain Instrumentation AmplifierAD626 ADI Low Cost， Single-Supply Differential AmplifierAD627 ADI 微功耗，单电源/双电源，轨到轨仪表放大器AD628 ADI High Common-Mode Voltage， Programmable Gain Difference Amplifier AD629 ADI High Common-Mode Voltage， Difference AmplifierAD630 ADI Balanced Modulator/DemodulatorAD632 ADI Internally Trimmed Precision IC MultiplierAD633 ADI Low Cost Four-Quadrant Analog MultiplierAD636 ADI Low Level， True RMS-to-DC ConverterAD637 ADI High Precision， Wideband RMS-to-DC ConverterAD640 ADI 120 MHz， 50 dB Demodulating Logarithmic AmplifierAD641 ADI 250 MHz， 44 dB Demodulating Logarithmic AmplifierAD6411 ADI DECT RF TransceiverAD648 ADI Dual Precision， Low Power BiFET Op AmpAD6488 ADI ADSL2+ CPE Analog Front EndAD648S ADI Aerospace Dual Precision， Low Power BiFET Op AmpAD650 ADI Voltage-to-Frequency and Frequency-to-Voltage ConverterAD651 ADI ObsoleteAD652 ADI Monolithic Synchronous Voltage-to-Frequency ConverterAD6524 ADI GSM Multi-Band SynthesizerAD6534 ADI Othello One Single-Chip Direct-Conversion GSM/GPRS/EDGE RFICAD6538 ADI Othello One Plus? Direct Conversion GSM/GPRS/EDGE Transceiver with Integrated LO VCOAD6539 ADI Othello One TV? Single Chip Direct Conversion GSM/GPRS Transceiver with Integrated TX VCOsAD654 ADI Low Cost Monolithic Voltage-to-Frequency ConverterAD660 ADI Monolithic 16-Bit Serial/Byte DACPORTAD6600 ADI Diversity Receiver ChipsetAD6620 ADI 65MSPS Digital Receive Signal ProcessorAD6622 ADI 65 MSPS， Quad Transmit Signal Processor (TSP)AD6623 ADI 104 MSPS， Four-Channel Digital Transmit Signal Processor (TSP) AD6624 ADI 80 MSPS， Quad Receiver Signal ProcessorAD6624A ADI Four-Channel， 100 MSPS Digital Receive Signal Processor (RSP) AD6630 ADI Differential， Low Noise IF Gain Block with Output ClampingAD6633 ADI Multi-channel (Digital) Transmit Signal Processor (TSP) with VersaCREST? Crest Reduction EngineAD6634 ADI 80 MSPS， Dual-Channel， WCDMA Receive Signal Processor (RSP) AD6635 ADI Four-Channel， 80 MSPS WCDMA Receive Signal Processor (RSP) AD6636 ADI 150 MSPS Wideband (Digital) Receive Signal Processor (RSP)AD664 ADI Monolithic 12-Bit Quad DACAD6640 ADI Multi-Channel， Multi-Mode Receiver ChipsetAD6644 ADI 14-Bit， 40 MSPS/65 MSPS Analog-to-Digital ConverterAD6645 ADI 14-Bit， 80 MSPS/105 MSPS A/D ConverterAD6645-MILADI 14-Bit， 80 MSPS Analog to Digital ConverterAD6650 ADI Diversity IF-to-Baseband GSM/EDGE Narrow-Band ReceiverAD6652 ADI 12-Bit， 65 MSPS IF to Base Band Diversity ReceiverAD6653 ADI IF Diversity ReceiverAD6654 ADI 14-Bit， 92.16 MSPS， 4 &amp; 6-Channel Wideband IF to Base Band ReceiverAD6655 ADI IF Diversity ReceiverAD667 ADI Microprocessor-Compatible 12-Bit D/A ConverterAD667S ADI Aerospace 12-Bit Microprocessor Compatible DACAD668 ADI 12-Bit Ultrahigh Speed Multiplying D/A ConverterAD669 ADI Monolithic 16-Bit DACPORTAD670 ADI 8-Bit Signal Conditioning ADC.AD670S ADI Aerospace 8-Bit Low Cost Signal Conditioning Single Supply AD673 ADI 8-bit Successive Approximation， ADCAD674B ADI Complete 12-Bit A/D ConvertersAD676 ADI 16-Bit Parallel 100 kSPS Sampling ADCAD677 ADI 16-Bit， Serial， 100 kSPS Sampling ADC.AD678 ADI 12-Bit 200 kSPS Complete Sampling ADCAD679 ADI 14-Bit 128 kSPS Complete Sampling ADCAD680 ADI Bandgap， Low Power 2.5v ReferenceAD682 ADI ObsoleteAD684 ADI Monolithic Quad Sample-and-hold Amplifier (SHA)AD688 ADI High Precision ±10 V ReferenceAD689 ADI ObsoleteAD693 ADI Loop-Powered 4-20 mA Sensor TransmitterAD694 ADI 4-20mA Monolithic Current TransmitterAD698 ADI Universal LVDT Signal ConditionerAD7011 ADI CMOS， ADC pi/4 DQPSK Baseband Transmit PortAD704 ADI Quad Picoampere Input Current Bipolar Op AmpAD706 ADI Dual Picoampere Input Current Bipolar Op AmpAD708 ADI Ultralow Offset Voltage Dual Op AmpAD71028 ADI Dual Digital BTSC Encoder with Integrated DACAD711 ADI Precision， Low Cost， High Speed， BiFET Op Amp AD7111 ADI Monolithic Multiplying DAC Featuring Wide Dynamic RangeAD7112 ADI Dual CMOS Multiplying DAC with Anti-Log Transfer Function for Audio Volume Control ApplicationsAD712 ADI Dual Precision， Low Cost， High Speed， BiFET Op Amp AD713 ADI Quad Precision， Low Cost， High Speed， BiFET Op Amp AD7142 ADI 电容式触摸传感器专用可编程控制器AD7143 ADI 电容式触摸传感器专用可编程控制器AD7147 ADI CapTouch?单电极电容式传感器专用可编程控制器AD7148 ADI AD7148 可编程触摸控制器，用于单电极电容传感器AD7150 ADI 用于近程传感的超低功耗双通道电容式转换器。

基于液体摆的柱面电容式倾角传感器

基于液体摆的柱面电容式倾角传感器

基于液体摆的柱面电容式倾角传感器刘志壮;张文昭;薛晓铂;邓海良;宫彦军【摘要】为实现平地机水平自动调整,设计并制作一种柱面型差动电容倾角传感器.该倾角传感器以两个半圆柱面为固定电极、水银为移动电极,分别构成两个电容即为差动电容传感器.当电容传感器倾角改变时,两个电容的值发生相反的变化.采用AD7150电容数字转换芯片,将两个电容的模拟电容值转换成数字值,由单片机进行处理获得电容差值与倾角的关系.理论和实验表明,倾角传感器有良好的线性度和宽的测量范围,且该方法可以获得较高的精确度,误差为:±0.30°,相关系数R2=1.在20℃～30℃温度范围内,温度对传感器倾角检测影响很小,可以不计.【期刊名称】《传感技术学报》【年(卷),期】2018(031)007【总页数】4页(P1024-1027)【关键词】倾角传感器;柱面电容;液体摆;AD7150【作者】刘志壮;张文昭;薛晓铂;邓海良;宫彦军【作者单位】湖南科技学院电子研究所,湖南永州425199;湖南科技学院电子研究所,湖南永州425199;湖南科技学院电子研究所,湖南永州425199;湖南科技学院电子研究所,湖南永州425199;湖南科技学院电子研究所,湖南永州425199【正文语种】中文【中图分类】TP212.1倾角测量在实验室和各个工程领域应用非常广泛,例如:实验装置水平调整,地震地壳形变监测,地质工程测绘,桥梁变形监控,堤坝位移检测,机器人和电子设备平衡控制,农业机械水平控制以及各种类型水平测量等[1-3]。

倾角传感器总体上可分为气体摆式[4-5]、液体摆式[6-7]、固体摆式[8-14]。

各种传感器结构和原理各不相同,适用范围也各不相同。

本文针对水田平地机,设计一种基于液体摆的差动柱面电容倾角传感器,该传感器优点是探头结构简单、测量范围为±90°,下文将对结构、原理和特性进行介绍。

1 差动柱面电容传感器结构与原理1.1 差动柱面电容结构1.固定电极Ⅰ;2.固定电极Ⅱ;3.液态电极;4.圆柱面;5.前盖板;6.后盖板图1 差动柱面电容结构示意图如图1所示,设计一种圆柱面形差分电容传感器的结构。