收藏本站
ACS709
High Bandwidth, Fast Fault Response Current Sensor IC
In Thermally Enhanced Package
Definitions of Accuracy Characteristics
{ [ [{
V IOUT _full-scale amperes – V IOUT(Q)
2 ( V IOUT _1/2 full-scale amperes – V IOUT(Q) )
?
?
?
?
Sensitivity (Sens). Thechangeindeviceoutputinresponsetoa
1 A change through the primary conductor. The sensitivity is the
product of the magnetic circuit sensitivity (G / A) and the linear
IC amplifier gain (mV/G). The linear IC amplifier gain is pro-
grammed at the factory to optimize the sensitivity (mV/A) for the
full-scale current of the device.
Noise (V NOISE ). The product of the linear IC amplifier gain
(mV/G) and the noise floor for the Allegro Hall effect linear IC
( ≈ 1 G). The noise floor is derived from the thermal and shot
noise observed in Hall elements. Dividing the noise (mV) by the
sensitivity (mV/A) provides the smallest current that the device is
able to resolve.
Linearity (E LIN ). The degree to which the voltage output from
the device varies in direct proportion to the primary current
through its full-scale amplitude. Nonlinearity in the output can be
attributed to the saturation of the flux concentrator approaching
the full-scale current. The following equation is used to derive the
linearity:
100 1–
where V IOUT_full-scale amperes = the output voltage (V) when the
sensed current approximates full-scale ±I P .
Symmetry (E SYM ). The degree to which the absolute voltage
output from the device varies in proportion to either a positive
or negative full-scale primary current. The following formula is
used to derive symmetry:
Accuracy is divided into four areas:
?? 0 A at 25°C. Accuracy of sensing zero current flow at 25°C,
without the effects of temperature.
?? 0 A over Δ temperature. Accuracy of sensing zero current
flow including temperature effects.
?? Full-scale current at 25°C. Accuracy of sensing the full-scale
current at 25°C, without the effects of temperature.
?? Full-scale current over Δ temperature. Accuracy of sensing full-
scale current flow including temperature effects.
Ratiometry . The ratiometric feature means that its 0 A output,
V IOUT(Q) , (nominally equal to V CC /2) and sensitivity, Sens, are
proportional to its supply voltage, V CC . The following formula is
used to derive the ratiometric change in 0 A output voltage,
? V IOUT(Q)RAT (%).
V IOUT(Q)VCC / V IOUT(Q)5V
100
V CC / 5 V
The ratiometric change in sensitivity, ? Sens RAT (%), is defined as:
Sens VCC / Sens 5V
100
V CC / 5 V
Output Voltage versus Sensed Current
Accuracy at 0 A and at Full-Scale Current
Increasing V IOUT (V)
? ?
100
V IOUT _+ full-scale amperes – V IOUT(Q )
V IOUT(Q) – V IOUT _–full-scale amperes
Accuracy
25°C Only
Accuracy
O v e r Temp erature
Quiescent output voltage (V IOUT(Q) ). The output of the device
when the primary current is zero. For a unipolar supply voltage,
Average
V IOUT
it nominally remains at 0.5×V CC . For example, in the case of a
bidirectional output device, V CC = 5 V translates into V IOUT(Q) =
2.5 V. Variation in V IOUT(Q) can be attributed to the resolution of
the Allegro linear IC quiescent voltage trim and thermal drift.
I P (min)
Accuracy
O v e r Temp erature
Accuracy
25°C Only
Electrical offset voltage (V OE ). The deviation of the device out-
put from its ideal quiescent voltage due to nonmagnetic causes. To
convert this voltage to amperes, divide by the device sensitivity,
–I P (A)
Full Scale
I P (max)
+I P (A)
Sens.
Accuracy (E TOT ). The accuracy represents the maximum devia-
tion of the actual output from its ideal value. This is also known
as the total ouput error. The accuracy is illustrated graphically in
the output voltage versus current chart at right. Note that error is
directly measured during final test at Allegro.
Accuracy
25°C Only
Accuracy
O v e r Temp erature
0A
Decreasing V IOUT (V)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
14
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ACS710KLATR-6BB-NL-T IC CURRENT SENSOR 120KHZ 16-SOIC
ACS710KLATR-6BB-T SENSOR CURRENT 16SOIC
ACS711ELCTR-25AB-T SENSOR CURRENT 25A 3.3V 8-SOIC
ACS713ELCTR-20A-T SENSOR CURRENT 20A 5V UNI 8-SOIC
ACS714LLCTR-50A-T SENSOR CURRENT 50A 5V BI 8SOIC
ACS715LLCTR-20A-T SENSOR CURRENT 20A 5V UNI 8-SOIC
ACS716KLATR-12CB-T IC CURRENT SENSOR 120KHZ 16SOIC
ACS716KLATR-6BB-NL-T IC CURRENT SENSOR 120KHZ 16-SOIC
相关代理商/技术参数
ACS709LLFTR-10BB-T 功能描述:SENSOR CURRENT 10A 制造商:allegro microsystems, llc 系列:- 包装:带卷（TR） 零件状态:不適用於新設計 用于测量:AC/DC 传感器类型:霍尔效应，开环 电流 - 检测:10A 通道数:1 输出:比率，电压 灵敏度:85mV/A 频率:DC ~ 120kHz 线性度:±0.25% 精度:±2% 电压 - 电源:4 V ~ 5.5 V 响应时间:4μs 电流 - 电源（最大值）:14.5mA 工作温度:-40°C ~ 150°C 极化:双向 安装类型:表面贴装 封装/外壳:24-QSOP 标准包装:7,500
ACS709LLFTR-20BB-T 功能描述:SENSOR CURR 37.5A 5V BI 24QSOP RoHS:是 类别:传感器，转换器 >> 电流 系列:- 标准包装:10 系列:*
ACS709LLFTR-20BB-T 制造商:Allegro MicroSystems 功能描述:Current Sensor IC
ACS709LLFTR-35BB-T 功能描述:SENSOR CURRENT 75A 5V BI 24QSOP- RoHS:是 类别:传感器，转换器 >> 电流 系列:- 标准包装:10 系列:*
ACS709LLFTR-35BB-T 制造商:Allegro MicroSystems LLC 功能描述:Current Sensor IC
ACS709LLFTR-35BB-TMxx 制造商:Allegro MicroSystems LLC 功能描述:Fast Fault Response Current Sensor IC 制造商:Allegro Microsystems 功能描述:IC, ACS709LLFTR-35BB-TMXX
ACS710 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:120 kHz Bandwidth, High Voltage Isolation Current Sensor with Integrated Overcurrent Detection
ACS710KLATR-10BB-NL-T 功能描述:SENSOR CURRENT 10A 制造商:allegro microsystems, llc 系列:- 零件状态:不適用於新設計 用于测量:AC/DC 传感器类型:霍尔效应，开环 电流 - 检测:10A 通道数:1 输出:比率，电压 灵敏度:85mV/A 频率:120kHz 线性度:±0.25% 精度:±1.6% 电压 - 电源:3 V ~ 5.5 V 响应时间:4μs 电流 - 电源（最大值）:14.5mA 工作温度:-40°C ~ 125°C（TA） 极化:双向 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 标准包装:3,000