收藏本站
ACS711
Hall Effect Linear Current Sensor with Overcurrent
Fault Output for < 100 V Isolation Applications
Definitions of Accuracy Characteristics
Sensitivity (Sens). The change in sensor output in response to a
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)
and the noise floor for the Allegro Hall effect linear IC. The noise
floor is derived from the thermal and shot noise observed in Hall
elements. Dividing the noise (mV) by the sensitivity (mV/A) pro-
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 below.
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 (%):
vides the smallest current that the device is able to resolve.
Linearity (E LIN ). The degree to which the voltage output from
the sensor varies in direct proportion to the primary current
100
?
V IOUT(Q)VCC / V IOUT(Q)3.3V
V CC / 3.3 V ?
{ [ [{
Δ gain × % sat ( V IOUT _full-scale amperes – V IOUT(Q) )
?
?
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–
2 ( V IOUT _half-scale amperes – V IOUT(Q) )
The ratiometric change in sensitivity, ? Sens RAT (%), is defined as:
Sens VCC / Sens 3.3 V
100
V CC / 3.3 V
Output Voltage versus Sensed Current
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 sensor varies in proportion to either a positive
or negative full-scale primary current. The following formula is
used to derive symmetry:
Accuracy at 0 A and at Full-Scale Current
Increasing V IOUT (V)
Accuracy
25°C Only
Average
V IOUT
Accuracy
O v e r Temp erature
? V IOUT(Q) – V IOUT –full-scale amperes
?
V IOUT _+ full-scale amperes – V IOUT(Q )
100
Quiescent output voltage (V IOUT(Q) ). The output of the sensor
when the primary current is zero. For a unipolar supply voltage,
I P (min)
Accuracy
O v e r Temp erature
Accuracy
25°C Only
it nominally remains at V CC ? 2. Thus, V CC = 3.3 V translates
into V IOUT(Q) = 1.65 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 (A)
0A
Full Scale
I P (max)
+I P (A)
Electrical offset voltage (V OE ). The deviation of the device out-
put from its ideal quiescent value of V CC / 2 due to nonmagnetic
causes. To convert this voltage to amperes, divide by the device
sensitivity, Sens.
Accuracy
25°C Only
Accuracy
O v e r Temp erature
Decreasing V IOUT (V)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
11
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
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
ACS750SCA-050 SENSOR CURRENT 50A 5V BI 5-CA
ACS756SCA-100B-PFF-T IC HALL EFFECT SENSOR MOD 5PIN
ACS758KCB-150U-PFF-T IC SENSOR CURRENT 150A UNI 3-CB
相关代理商/技术参数
ACS711KEXLT-15AB-T 制造商:Allegro MicroSystems 功能描述:AC/DC Current 3.3V T/R 制造商:Allegro MicroSystems 功能描述:AC/DC Current 3.3V 12-Pin QFN EP T/R 制造商:ALLEGRO MICROSYSTEMS, LLC 功能描述:SENSOR CURRENT 15.5A 3.3V 12-QFN
ACS711KEXLT-31AB-T 制造商:Allegro MicroSystems LLC 功能描述:AC/DC Current 3.3V 12-Pin QFN EP T/R
ACS711KLCTR-12AB-T 功能描述:SENSOR CURRENT 12.5A 3.3V 8-SOIC RoHS:是 类别:传感器，转换器 >> 电流 系列:- 标准包装:10 系列:*
ACS711KLCTR-25AB-T 功能描述:SENSOR CURRENT 25A 3.3V 8-SOIC RoHS:是 类别:传感器，转换器 >> 电流 系列:- 标准包装:10 系列:*
ACS712 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Fully Integrated, Hall Effect-Based Linear Current Sensor with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS712_06 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Fully Integrated, Hall Effect-Based Linear Current Sensor with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS712_07 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Fully Integrated, Hall Effect-Based Linear Current Sensor with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS712_V13 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Fully Integrated, Hall Effect-Based Linear Current Sensor IC