ACS712ELCTR-20A 电流传感器 ACS712T

来源:源365棋牌游戏有什么风险_365天天乐棋牌_bet 365乐游棋牌 ?? 时间:2012-09-12

ACS712: 带 2.1 kVRMS 电压绝缘及低电阻电流导体的全集成、基于霍尔效应的线性电流传感器 IC

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Allegro? ACS712 可为工业、商业和通信系统中的交流或直流电流感测提供经济实惠且精确的解决方案。该器件封装便于客户轻松实施。典型应用包括电动机控制、载荷检测和管理、开关式电源和过电流故障保护。该器件不可用于汽车应用。

该器件具有精确的低偏置线性霍尔传感器电路,且其铜制的电流路径靠近晶片的表面。通过该铜制电流路径施加的电流能够生成可被集成霍尔 IC 感应并转化为成比例电压的磁场。通过将磁性信号靠近霍尔传感器,实现器件精确度优化。精确的成比例电压由稳定斩波型低偏置 BiCMOS 霍尔 IC 提供,该 IC 出厂时已进行精确度编程。

当通过用作电流感测通路的主要铜制电流路径(从引脚 1 和 2,到 3 和 4)的电流不断上升时,器件的输出具有正斜率 (>VIOUT(Q))。该传导通路的内电阻通常是 mΩ,具有较低的功率损耗。铜线的粗细允许器件在可达 5× 的过电流条件下运行。传导通路的接线端与传感器引脚(引脚 5 到 8)之间电气绝缘。这让 ACS712 电流传感器 IC 可用于那些要求电气绝缘却未使用光电绝缘器或其它昂贵绝缘技术的应用。

ACS712 采用小型的表面安装 SOIC8 封装。引脚架镀采用 100% 雾锡电镀,可与标准无铅 (Pb) 印刷电路板装配流程兼容。在内部,该器件为无铅产品,倒装法使用当前豁免于 RoHS 的高温含铅焊球除外。器件在出厂装运前已完全校准。

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特色和优点

低噪音模拟信号路径?
可通过新的滤波引脚设置器件带宽?
5 μs 输出上升时间,对应步进输入电流?
80 千赫带宽?
总输出误差为 1.5%(当 TA = 25°C时)?
小型低厚度 SOIC8 封装?
1.2 mΩ 内部传导电阻?
引脚 1-4 至 5-8 之间 2.1 VRMS 最小绝缘电压?
5.0 伏特,单电源操作?
66 至 185 mV/A 输出灵敏度?
输出电压与交流或直流电流成比例?
出厂时精确度校准?
极稳定的输出偏置电压?
近零的磁滞?
电源电压的成比例输出?

功能方框图

ACS712.jpg

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包装
ACS712 采用小型的表面安装 SOIC8 封装。引脚架镀采用 100% 雾锡电镀,可与标准无铅 (Pb) 印刷电路板装配流程兼容。在内部,该器件为无铅产品,倒装法使用当前豁免于 RoHS 的高温含铅焊球除外。器件在出厂装运前已完全校准。

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完整型号

??? 型号????????????????????????? 封装类型??????????????????? 温度??
ACS712ELCTR-05B-T????????????? 8-lead SOIC???????????? -40 ° C to 85 ° C?
ACS712ELCTR-20A-T????????????? 8-lead SOIC???????????? -40 ° C to 85 ° C????
ACS712ELCTR-30A-T????????????? 8-lead SOIC???????????? -40 ° C to 85 ° C????
ASEK712ELC-05B-T?????????????? DEMO BOARD????????????? -40 ° C to 85 ° C??
ASEK712ELC-20A-T?????????????? DEMO BOARD????????????? -40 ° C to 85 ° C???
ASEK712ELC-30A-T?????????????? DEMO BOARD????????????? -40 ° C to 85 ° C?

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LTV356T-B??????? LITEON代用Toahiba?? TLP181GB
?
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ACS758LCB-050B-PFF?? ACS758ECB-200B-PFF?? ACS710KLATR-25CB-T
ACS712ELCTR-20A-T??? ACS712ELCTR-05B-T??? ACS712ELCTR-30A-T
LTV-816S-C-TA??????? LTV-816S-B-TA??????? LTV-816S-A-TA
LTV356T-C??????????? A3955SB????????????? A3987SLP-T
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A3212ELHLT?????????? A1104EUA???????????? 6N137S
US1881KUA??????????? A3977SED???????????? TOP246YN
A3901SEJTR-T???????? MC33039DR??????????? TLE4921-5U
TLE4935L???????????? TLE4913????????????? TB6560AHQ

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ACS712: Fully Integrated, Hall-Effect-Based Linear Current Sensor IC with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor

acs712elc.jpg


The Allegro? ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications. For the automotive grade version, see ACS714.

The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging.

The output of the device has a positive slope (>VIOUT(Q)) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. The internal resistance of this conductive path is 1.2 mΩ typical, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 5× overcurrent conditions. The terminals of the conductive path are electrically isolated from the sensor IC leads (pins 5 through 8). This allows the ACS712 current sensor IC to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

The ACS712 is provided in a small, surface mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.

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FEATURES & BENEFITS

Low-noise analog signal path?
Device bandwidth is set via the new FILTER pin?
5 μs output rise time in response to step input current?
80 kHz bandwidth?
Total output error 1.5% at TA = 25°C?
Small footprint, low-profile SOIC8 package?
1.2 mΩ internal conductor resistance?
2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8?
5.0 V, single supply operation?
66 to 185 mV/A output sensitivity?
Output voltage proportional to AC or DC currents?
Factory-trimmed for accuracy?
Extremely stable output offset voltage?
Nearly zero magnetic hysteresis?
Ratiometric output from supply voltage

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Functional Block Diagram

ACS712.jpg


PACKAGING

The ACS712 is provided in a small, surface mount SOIC8 package (suffix LC). The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.

ACS.jpg


Part Number Specifications and Availability

? Part Number???????????? Package Type?????????? Temperature??
ACS712ELCTR-05B-T???????? 8-lead SOIC????????? -40 ° C to 85 ° C?
ACS712ELCTR-20A-T???????? 8-lead SOIC????????? -40 ° C to 85 ° C?
ACS712ELCTR-30A-T???????? 8-lead SOIC????????? -40 ° C to 85 ° C?
ASEK712ELC-05B-T????????? DEMO BOARD?????????? -40 ° C to 85 ° C?
ASEK712ELC-20A-T????????? DEMO BOARD?????????? -40 ° C to 85 ° C?
ASEK712ELC-30A-T????????? DEMO BOARD?????????? -40 ° C to 85 ° C


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Contact Person:?? Nina Huang?
Mobile phone:???? 086-15013553132
QQ:????????????? 1354906433?
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Top Hot Optocoupler:
LTV-247????????? LITEON代用Toahiba?? TLP281-4GB
LTV-846????????? LITEON代用Toahiba?? TLP521-4GB
LTV-816????????? LITEON代用Toahiba?? TLP521-1GB
LTV356T-B??????? LITEON代用Toahiba?? TLP181GB

Top Hot components:
LTV817STA-V????????? 6N137S?????????????? A6801SLW????
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ACS758LCB-050B-PFF?? ACS758ECB-200B-PFF?? ACS710KLATR-25CB-T?
ACS712ELCTR-20A-T??? ACS712ELCTR-05B-T??? ACS712ELCTR-30A-T?
LTV-816S-C-TA??????? LTV-816S-B-TA??????? LTV-816S-A-TA
LTV356T-C??????????? A3955SB????????????? A3987SLP-T
TB62209FG??????????? A3212EUA???????????? OV529-B49
A3212ELHLT?????????? A1104EUA???????????? 6N137S
US1881KUA??????????? A3977SED???????????? TOP246YN
A3901SEJTR-T???????? MC33039DR??????????? TLE4921-5U
TLE4935L???????????? TLE4913????????????? TB6560AHQ

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