Current Sensor FAQ

Have questions about our industry-leading current sensor ICs? Look no further!

Check out our most frequently asked questions and answers.0-50A电流传感器0-400ACore-based-Field-Sensors

General Allegro Current Sensor Questions and Answers

The Hall Effect is the presence of a voltage when an external, perpendicular magnetic field is applied to a current carrying conductor. The conductor, or the Hall Element, is biased with a constant current. As magnetic field changes, a change in voltage across the hall element occurs. This voltage can then be amplified and conditioned to provide an output that is related to the magnetic field. Using this principle, magnetic field can be concentrated perpendicular to the hall element using integrated packaging, ferromagnetic cores, or coreless busbars. Hall effect current sensors have the advantage of inherent isolation, low power loss, and stability across temperature while providing an analog output voltage that can be monitored by a microcontroller.

Parts can be ratiometric or non-ratiometric. Ratiometric indicates that the device sensitivity is proportional to the device supply voltage, VCC. In addition, the device output at 0 A, also called Viout(q), is nominally equal tovcc / 2。Non-ratiometric devices will have VIOUT(Q) and sensitivity values stable over VCCvariations within the specified input voltage range. Ratiometry can be useful when the input voltage of the sensor is on the same line as the ADC reference voltage. Non-ratiometric parts are useful in applications where the sensor input voltage is noisy or unstable. Unstable VCC如果该部件比率,将产生嘈杂的输出。

当前传感器中的三种主要类型的错误被定义为:

Sensitivity Error:Esens=(((测量灵敏度)/ sen)-1)×100(%)

Offset Error:VOE=测量QVO - QVO

Total Output Error:ETOT=((v出去V出去IDEAL)/(SENSideal×I.P))× 100(%)

application notegoes more in depth on sources and definitions of error.

On the Allegro Current Sensor device homepage, navigate to the “Part Number Specifications and Availability”. Select “View Data” on the desired gain option. The MSL rating is included in the “Materials Declaration Report”.

FAQ视图数据

常问问题MSL Rating

而专门为表面moun韩剧评级t parts, Allegro does qualify and provide a through hole equivalent (THD) for non-surface mount parts that directly correlates to the standard MSL ratings.

One of the key benefits of Hall Effect current sensors is their inherent galvanic isolation. Because there is no electrical connection between the primary current path and the signal circuitry, much higher working voltages are available. There are several isolation parameters or tests included in the current sensor device datasheets such as:

Dielectric Surge Strength- 可以处理已知上升时间,宽度和幅度的脉冲的电压量。

Dielectric Strength- 发生在电击之前可以在电击前的电压和时间的量。这是在测量漏电流的同时测试一定的时间(通常为60秒),以确保未发生故障。

Working Voltage- The maximum voltage that can be continuously applied to the device. It usually has a specified value for DC, peak-to-peak, and RMS voltages.

Isolation characteristics are specific to the package of the device. Below is a table summarizing the various packaging types offered by Allegro and their isolation characteristics as well as other important package information.

Package Descriptor


SOICW-16

LA

SOICW-16

MA

SOICW-16

MC

SOIC-8

LC1

SOIC-8

LC2

QFN-12

EXB

7-pin PSOF

LR

5-pin

CB

Picture

16-Pin SOICW LA Package Allegro-16-Pin-SOICW-MA-Package 16-pin-SOICW-MC-Package LC SOIC 8铅 LC SOIC 8铅

EX-QFN-12 pin

LR包装图像

CA/CB 5 pin

尺寸

10.3x10.3mm.

10.3x10.3mm.

11.3x13mm

4.9x6mm.

4.9x6mm.

3x3mm.

6.4x6.4mm

14x22mm.

导体抵抗

0.85 mΩ

0.85 mΩ

0.27 mΩ

1.2mΩ

0.65 mΩ

0.6 mΩ

0.2 mΩ

0.1mΩ.

Dielectric Strength

RMS3600 V

RMS5000 V.

RMS5000 V.

RMS2400 V.

RMS2400 V.

NA

NA

RMS4800 V

Working Voltage

DC870 V

RMS616 V

DC1550V.

RMS1097 V

DC1618 V.

RMS1144 V.

DC420 V

RMS297 V

DC420 V

RMS297 V

DC100 V.

RMS70 V

DC100 V.

RMS70 V

DC1358 V

RMS700 V

Allegro也提供核心和无芯场传感器。这些设备可以感测电流> 1000A并实现> 5000VRM的介电强度隔离。

The part output will continue to increase or decrease until it reaches a high (current > IPR) or low (current < IPR) saturation point, where IPRis the current sensing range of the part. Voltage Output High/Low (VOH/VOL), sometimes referred to as Output Saturation Voltage (V坐(H / L)), is defined as the voltage that sensor output, VIOUT, does not pass as a result to an increasing/decreasing magnitude of current. This can be seen in the figure below. Note that changing the sensitivity does not change the saturation voltage.

常见问题线图


v的线性性能的功能范围IOUT, and its related datasheet parameters, is valid from -IPRto +IPR。It is possible for the output to report voltages beyond the full-scale measurement until the saturation point, but parameters are not guaranteed beyond the full scale measurement.

Every Allegro current sensor will have a power on time specified in the datasheet such as the example below:

常问问题Power on Time

Power-On Time, tPO, is defined as the time interval between a) the power supply has reached its minimum specified operating voltage (Vcc(min))和B)当传感器输出在施加的磁场下稳定在其稳态值的±10%内。在下面的范围捕获中可以看到输出和电源电压的一个例子:

常问问题v output graph

TheMagnet, Concentrator and Magnetic Shield Supplierspage on the Allegro website provides a vendor list and overview of recommended magnets. This list includes information on core/concentrator and shielding suppliers.
Allegro current sensors come in two range variants, bidirectional and unidirectional, which are identified with the part suffix B and U respectively. Bidirectional parts can sense positive and negative currents while unidirectional parts only sense in one direction. The output of a bidirectional parts will be at a minimum when current is full scale in the negative direction and at a maximum when current is full scale in the positive direction. The output of a unidirectional part will be at a minimum if current is less than or equal to zero and at a maximum when current is at full scale in the positive direction. Bidirectional parts are useful in detecting negative undershoot or beneficial to systems where current flows in both directions. Unidirectional devices can be used to increase sensitivity when there is no need to sense current in the negative direction.

每个Allegro电流传感器都包括用于V的引脚CC, Ground (GND), V出去,和被感测到初级电流的路径,如果是集成传感器。有些部件包括额外的引脚,用于增强功能。这些引脚列表包括:

vref / vzcr-supplies the Zero-Current Output Voltage (Viout(q)) to a reference pin. This allows for differential measurement and the user to know the zero-current voltage for the output channel VIOUT。(ACS37002,ACS730)

FAULT /Over Current Fault (OCF)- open drain output that will pull low when a current threshold has been met. The fault output may be latched or unlatched in operation (ACS37002,ACS71240,ACS720,ACS732,ACS733,A1365)

VOC- Some parts can select the over current fault threshold using an external voltage. This is done with a resistor ladder connected to the VCCpin. (ACS37002,ACS720,ACS732,ACS733)

获得选择- Some parts can change the gain depending on the logic applied to the gain select pin which looks for a high or low input (ACS37002).

FILTER- 通过连接外部电容,V出去filter pole location can be set (ACS720,ACS724 / 5.)


噪音

噪音

噪音(输入参考[mARMS[MVRMS]) is the root mean square value of the noise on the output evaluated at the specified bandwidth.

噪音Density

噪声密度(输入参考[(μARMS(√hz]或输出参考[(μV)RMS) /√Hz)噪声作为频率的函数。美联社报道proximately convert from noise density to noise, multiply noise density by √(bandwidth*π/2) (note that at lower frequencies, around <1kHz, flicker noise, or 1/f noise, plays a factor and will affect the overall noise performance, i.e. not all noise is removed with a DC input).

The resolution of the device is equivalent to the noise input referred [mARMS] at the desired bandwidth. If a device is specified with noise density, convert to noise by multiplying noise density by√(bandwidth*π/2)。If the device is specified as output referred, divide by sensitivity to get input referred.

Another factor to consider when calculating resolution is the capability of the ADC in which the current sensor output is connected. The ADC resolution of the sensor output in amps is equal to:

(ADC范围[MV])/(器件SECT [MV / A] * 2ADC ENOB [位] -1)

As an example, calculate the resolution of theACS732KLATR-20AB-Tat 1MHz bandwidth using a 5 V ADC with 11.5 effective number of bits. The ACS732 is specified with a noise density of 55 (µARMS/√Hz。

Multiply this value by √(1MHz * π/2) to get a noise of 69 mARMS, which gives the resolution of the sensor output.

Next, calculate the ADC resolution where resolution =(5000 mV)/((100 mV)/ a *(211.5-1)).

这results in an ADC resolution of 34.5 mA. When calculating the total resolution of the system, take the maximum of these two calculations, or in this case, 69 mA.

低的pass filtering of the Allegro current sensor output will decrease the noise but at the cost of device bandwidth. If a specific noise level or resolution is desired, solve for bandwidth (BW) in the following equation:desired noise = noise density * √(BW*π/2)

常见问题callegro cs图

Next, pick R and C values that generate the desired bandwidth. The bandwidth of an RC filter is equal to1 /(2 *π* r * c)。It is important to use an R value that is low enough to not affect the ADC reading. Because ADC’s generally have high input impedance, a value of around 1Kohm or less is typically acceptable.

  • Verify how noise is specified in the datasheet. For example, noise may be dependent on the capacitor on V出去, like the specification below.

常见问题噪音

  • 增加V的电容出去。The datasheet will include a value for the maximum output capacitance that can be connected to V出去, like the specification below.

常见问题输出电容负载

  • If changing the capacitance does not fix the problem, layout should be examined. If the V出去signal has a long trace to the ADC or measurement instrument, there may be other signals interacting with the output signal. Attach an oscilloscope as close as possible to the output of the current sensor and monitor the noise directly at the part output.
  • Another potential issue is an unstable input voltage to the sensor. Ratiometric parts will transfer a noisy input voltage to the device output signal. Monitor the VCCpin of the current sensor to check for an unstable input. Make sure that the correct bypass capacitor value is being used and is placed as closely as possible to the part on the PCB.
  • 另一个噪音来源可能来自杂散磁场。请参阅设计支持的问题1yabo亚博网站部分to learn about mitigating stray fields.

Datasheet

Listed in the datasheet for each device is a Selection Guide, typically located on page 2 or 3. While there is some variation from device to device in what is included in the device selection guide, some primary attributes of the selection guide are the part number, sensitivity (Sens), optimized current range (only applicable to integrated conductor sensors), operating temperature (TA), package type, and supply voltage (if the device has 5 V and 3.3 V variants). This table can be used as a guide when selection the current sensor for an application.

例子:

Core based (ACS70310.) Selection Guide from device datasheet:

常问问题ACS70310.Selection Guide

融合的 (ACS71240) Selection Guide from device datasheet:

常见问题选择指南2

There are two basic Allegro current sensor naming schemes, one for integrated (ACS71240, ACS724, ACS37002, etc.) and one for core-based sensors (ACS70310, A1365, etc).

Common naming components to integrated and core-based sensors: Allegro current sensors begin with ACS (with the exception of legacy A1363/5/6/7), followed by a three to five digit part number. The part number is followed by a letter to indicate the operating temperature range of the sensor. The temperature range designation is followed by the package designator, which can be two/three digits. Following the package designation, integrated sensors then have a two letter designation for available packaging/shipping options and core-based sensors will have a two letter designation for the leadform option. Next, integrated sensors have a two/three digit current range value and the core-based sensors have the trimmed sensitivity value. This is then followed by the sensor’s directionality, bidirectional (B) or unidirectional (U). Next is the device’s nominal supply voltage level. Included at the end of the part name are custom features (custom fault level, set polarity, customer programmable, etc.). See the device specific datasheet for more information about the device’s part number. Note that legacy devices, like the ACS722/ACS723, ACS724/ACS725, and ACS732/ACS733, do not have a bidirectional or unidirectional designation in the name nor do they have a designation for nominal supply voltage. Different part numbers were made for 3.3 V and 5 V variants (i.e., the ACS724 is a 5 V device while the ACS725 is a 3.3 V device but these parts have identical functionality).


命名方案的示例:

基于核心(ACS70310.):

ACS70310.Naming Convention
融合的 (ACS71240):

常见问题命名规格

遗产集成(ACS724vs.ACS725, note no supply voltage designation in the Selection Guide):

常见问题选择指南

ACS725选择指南

Thermals

The following application note为Allegro电流传感器包提供表征数据。此应用笔记包括Allegro演示板上拍摄的数据。当定义适用于特定应用程序和当前要求的正确Allegro电流传感器包时,本文档很有用。
可以流过包装的绝对最大电流量与设备可以感测的电流范围不同。最大允许电流取决于封装和PCB布局,是环境温度的函数。参考Question 1 of the Thermal Section of the FAQfor information on determining the maximum allowable current of Allegro current sensors. The output of the device will saturate when current flowing through is greater than optimized current sensing range. Refer to常见问题解答一般部分的问题7for a further explanation on output saturation.

Demo Boards

A- allegro.
S– Sensor
E– Evaluation
K– Kit

Navigate to the Allegro Microsystemshomepage。Allegro current sensor demo boards begin with the “ASEK” designation. For example, if a ASEK37800KMAC‐015B5‐SPI demo board is required to evaluate the ACS37800KMACTR-015B5-SPI, search ASEK37800 in “Check Stock” search bar on the top right corner of the Allegro homepage.

常见问题检查库存

FAQ DISTI零件

The search for “ASEK37800” will provide results for all available ASEK37800 demo boards. Click the Cart icon to be routed to the Digikey website for purchase.

On the device home page, click the link for “Design Support Tools” as shown in the picture below:

常问问题Design Support Tab

如果演示板有一个用户指南,它将在设计支持工具中提供可下载链路,如下所示:yabo亚博网站

常问问题Design Support Tools

All components on the demo board will be rated at or above the max temperature rating of the current sensor under test. The current rating of the demo board will depend on the package of the current sensor and ambient temperature. The followingapplication noteprovides characterization data for current sensor packages on Allegro demo boards at various ambient temperatures.

Packaging / Layout

On the device homepage of each Allegro current sensor is a Design Support section, located near the bottom of the web page. Here, there is a zip file containing the Gerber files of the ASEK demo board for the device. Gerber files are files that contain information on each board layer of a PCB design.


常问问题Gerber Files


After unzipping the Gerber files folder, there will be a FAB document. This FAB document contains information about the demo board layout as well as information about copper thickness, PCB layer count, among of the demo board attributes.

常问问题PDF Selection

In each device datasheet, there is a PCB layout and thermal application section that is specific to that device and package.

相关申请说明:

  1. Managing External Magnetic Field Interference When Using ACS71x Current Sensor ICs -Here
  2. 使用Allegro电流传感器IC时最小化共模场干扰的技术(ACS724和ACS780) -Here
  3. 无核霍尔效应电流传感器IC中的共模场抑制 -Here

参考设计支持FAQ部分的问题1yabo亚博网站to learn about mitigating stray fields.

On the specific Allegro current sensor device homepage, navigate to the “Part Number Specifications and Availability”. Select “View Data” on the desired gain option. The package weight is included in the “Materials Declaration Report”.

FAQ视图数据Selection Guide

常问问题Package Weight

在位于网页底部附近的所需Allegro电流传感器的设备主页上,是一种包装部分。在包装部分中,通常存在包装的封装图像(如果设备在多个包中提供),则设备被容纳在(多于一个)。可以在此处找到设备包的步骤文件。

如果步骤文件未位于设备主页上,请参阅vip亚博 在Allegro网站上。

常问问题Packaging Web Page Section
Acquiring a UL certification indicates that Allegro current sensors have been tested to applicable standards; UL is globally recognized in their ability to provided accreditation to productions in the industry. Allegro current sensors housed in the MA, LC, MC, LA, and CB packages have been certified to related UL standards 60950-1, 2nd Edition and 62368-1, 1st Edition (MA only).
位于device homepage of Allegro Current sensors housed in the MA, LC, MC, LA, and CB packages are the UL Certificates of Compliance and UL CB Test Certificates.

Certificates of Compliance verify that devices have been tested by UL in accordance with UL standard 60950-1 and UL standard 62368-1 (MA only). CB Test Certificates provide the UL certified working voltage for basic and reinforced insultation numbers as well as the maximum rated isolation voltage.
参考the “Allegro产品的焊接方法” application note on the Allegro website and下载了这里
  • LA具有最接近导体的霍尔元件的最高敏感性
    • 填充芯片位于最接近引线框架的模具顶部
  • MA具有高内部隔离
    • 2 layers of polyimide insulation and 3 layers of insulating adhesive
  • MC has the lowest internal conductor resistance
    • Longer creepage for better working voltage

Also refer toQuestion 6 of the General Question section常见问题解答更多包裹信息。


yabo亚博网站

There are several ways to begin the product selection flow. The first would be based off the required isolation or package size. The following table provides an overview of the available packages (not including field sensors).

Package Descriptor


SOICW-16

LA

SOICW-16

MA

SOICW-16

MC

SOIC-8

LC1

SOIC-8

LC2

QFN-12

EXB

7-pin PSOF

LR

5-pin

CB

Picture

16-Pin SOICW LA Package Allegro-16-Pin-SOICW-MA-Package 16-pin-SOICW-MC-Package LC SOIC 8铅 LC SOIC 8铅

EX-QFN-12 pin

LR包装图像

CA/CB 5 pin

尺寸

10.3x10.3mm.

10.3x10.3mm.

11.3x13mm

4.9x6mm.

4.9x6mm.

3x3mm.

6.4x6.4mm

14x22mm.

导体抵抗

0.85 mΩ

0.85 mΩ

0.27 mΩ

1.2mΩ

0.65 mΩ

0.6 mΩ

0.2 mΩ

0.1mΩ.

Dielectric Strength

RMS3600 V

RMS5000 V.

RMS5000 V.

RMS2400 V.

RMS2400 V.

NA

NA

RMS4800 V

Working Voltage

DC870 V

RMS616 V

DC1550V.

RMS1097 V

DC1618 V.

RMS1144 V.

DC420 V

RMS297 V

DC420 V

RMS297 V

DC100 V.

RMS70 V

DC100 V.

RMS70 V

DC1358 V

RMS700 V

The other product selection flow may begin with the required current sensing level. Allegro has landing pages for various current sensing levels including:

TheCurrent Sensors Innovationsalso highlights the benefits of the different product families.

When debugging stray magnetic fields, check to see if the sensor is single or dual hall technology by checking the functional block diagram on the device specific datasheet.

Single Hall and Stray Fields:

因为Allegro电流传感器使用霍尔效应来测量电流,所以在测量的电流外部的霍尔元件上看到的任何附加磁场都会影响传感器的输出。这些附加磁场通常称为杂散或普通磁场。杂散磁场最常见的原因是在电流传感器附近存在高电流迹线或导线。为了近似由电流携带线引起的误差,将迹线的磁场模拟为无限线B = µ* (I / (2π×d))

B是高斯(g)的磁场,µ是g等于自由空间的渗透性4π*0.001,I是安培的当前,还有吗?d从电线上的点到垂直于电线的霍尔元件的线路的距离。一旦磁场是已知的,乘以磁耦合因子[g / a](在大多数数据表中提供),它将导致放大器中的绝对误差。一旦估计错误,可以通过去除杂散场产生电线或迹线并重新测试传感器输出来执行测试。如果不能移除迹线或电线,则另一个解决方案是将传感器从电路板上拉出并将部分从疑似电流携带线上脱离PCB。最后,可以通过将铁物质放置在传感器周围以阻挡杂散场来使用屏蔽。

application notedescribes in more detail the effects of magnetic field interference and shielding.


Dual Hall and Stray Fields:

Allegro也提供sensors with dual hall elements to mitigate stray field error. Two Hall elements are used differentially and placed on opposite sides of the current loop. This allows the common magnetic field to be removed allowing output voltage to be significantly unaffected by the common field. Although dual hall elements minimize stray field error, they do not entirely eliminate the potential of error induced by stray field. The same testing/mitigation techniques in the previous paragraph can also be used when debugging dual hall sensors.

application noteexplains in more detail how to estimate and mitigate common magnetic field when using sensors with dual hall elements.

Allegro provides LTSpice models for most Allegro current sensors. The followinglink将下载一个zip文件夹,其中包含整个Spice模型库,用于Allegro当前传感器。阅读“zip文件夹中包含的”allegro_acs_lt_guide.pdf“,以便详细步行,以便在LTSPICE中获取开始以及如何使用Allegro零件。
笔记gives an overview, guidelines, and simulation results for designing with a bus bar.

Allegro也提供an在线交互式建模工具to help design bus bars for coreless solutions.
笔记provides an overview and guidelines for designing a core/concentrator to pair with Allegro field sensors.

The following is a check list to follow to verify the proper output of an Allegro current sensor:

  • Is the input voltage above the minimum and below the maximum specified in the datasheet? Adjust the input voltage to match the typical VCC value in the datasheet.
  • 输入电流是否与数据表的典型值匹配?如果电流低于预期,则输入电源和传感器之间可能存在开路。如果电流高于预期,则输入下沉电流可能存在其他东西,并防止设备正确偏置。验证供应连接到零件。
  • When the device is biased on correctly, but no current is applied, what is the output of the device? Ensure that when in this state, the device output matches the zero-current output voltage (Viout(q))在数据表中指定的)。如果这不匹配,请测量从输出到地面的电阻,并确保没有任何拉动输出低。另外尝试将传感器转发或用另一部分替换,以查看问题是否仍然存在。这将验证问题是否是零班或应用程序。
  • If Viout(q)is normal, is the sensitivity of the device within the datasheet specification? To quickly test sensitivity, apply 0 A and measure VIOUT, then apply a known current and remeasure VIOUT。The slope of these two points is the sensitivity in mV/A. To troubleshoot issues with sensitivity, ensure that the resistance of the current path being sensed is as expected by measuring with an ohmmeter. Faulty soldering or a stray trace could lower the resistance through the conductor being measured and introduce error.

Other potential issues include noise (refer to the Noise section of the FAQ) and stray magnetic field (refer to the Design Support Section of the FAQ).

Essentially every shunt solution can be replaced with an integrated Hall Effect sensor simply by routing the current trace through the integrated current sensor instead of through an external shunt. The few shunt solutions that may not be practical for an integrated Hall Effect sensor include ultra-low current resolution (in the uA’s) or ultra-high speed (>1Mhz).

从分流器解决方案到集成霍尔效应解决方案的关键优势是增加的隔离,降低的布局大小,并且设计复杂性降低。在不使用需要外部隔离电路的隔离放大器的情况下,大多数分流器解决方案不能超过100多V共模电压。将其与霍尔效应电流传感器进行比较,从而从电流路径到信号引脚的固有隔离。切换到霍尔效应传感器还消除了外部分流器和输入滤波的需要。这降低了布局空间以及设计复杂性。

有很多方法可以测量系统中的电流,但下表突出显示并比较了主电流传感解决方案:

Solution

霍尔+群体

霍尔+核心/母线酒吧

Shunt Solutions

电流互感器

Current Module

Comment

Operating Voltage

100-1600V

> 1000V.

<100V无需额外的隔离电路

> 1000V.

> 1000V.

隔离使得能够轻松使用高压总线的相位监控

指挥/分支阻抗

低的

没有任何

因分流而异

低的

低的

较高的电阻量增加了热量和功率耗散

Size

小(单一组件)

大if using a core/concentrator

中等的(IC with external circuitry)

Discrete solutions and modules can be very large. Hall + integrated conductor is a single component

Design Complexity

低(单包装,其他功能可用:故障,VREF)

High (must design core or bus bar to work with sensor

高(必须挑选和设计分流,通常需要过滤)

中等的(single package, no additional features)

低(单包装,可用附加功能)

零件可以进入或需要额外的设计复杂性。在复杂的设计中布局变得更加困难

直流精度

中等的-High

中等的-High

High

没有直流组件

中等的-High

高温测量直流电流的精度

AC Accuracy

中等的-High

中等的-High

High

High

中等的-High

Accuracy over temperature measuring AC currents

Offset

中等的

中等的

低的

低的

中等的

What is the offset error component of the accuracy

Current Dynamic Range

0-400A

0->1000A

因分流而异

0->1000A

0->1000A

Practical limits are often based on thermal dissipation in shunt/conductor

带宽( - 3 dB)

Up to few MHz

Up to few MHz

Up to 100’s MHz (Gain Dependent)

Up to 100’s MHz

Up to few MHz

Amp BW is often misleading. Shunt inductance limits overall flat band region.

Cost

$ - $$

$$

$ - $$

$$

$$$

Must consider the component accuracy. Shunt solution can be the lowest cost, but lowest performance

软件

位于Allegro Customer Portal是程序员GUI / DLL,适用于Allegro客户可编程传感器。除了用于客户可编程设备的编程软件外,Allegro客户网站还有有用的设计工具,包括用户指南和交互式设计工具。

ASEK20(link) is a device used to program and evaluate customer programable Allegro current sensors (the ASEK20 can be used for angle position, linear position, and digital position sensors). The ASEK20 is used in combination with the device specific daughterboard (which are available separately from the ASEK20). The ASEK20 is a benchtop validation and programming tool useful in characterizing and understanding the performance of Allegro current sensors. The ASEK20 is also useful in calibrating Allegro current sensors in the field. Device specific software applications can be found on Allegro’s Software Portal (link).

客户可编程Allegro当前传感器,可与ASEK20一起使用:

  1. ACS70310.
  2. ACS70311.
  3. ACS71020
  4. ACS37800
  5. A1363
  6. A1365
  7. A1367