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参数资料
| 型号： | ACS750SCA-050 |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | SENSOR CURRENT 50A 5V BI 5-CA |
| 标准包装： | 170 |
| 电流 - 感应： | ±50A |
| 精确度： | ±1.5% |
| 灵敏度： | 18.75 ~ 20.75 mV/A |
| 电流 - 电源： | 7mA |
| 传感器类型： | 霍尔效应 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 输出： | 2.5V |
| 频率： | 13kHz |
| 响应时间： | 27µs |
| 电极标记： | 双向 |
| 工作温度： | -20°C ~ 85°C |
| 封装/外壳： | 5-CA 成形引线 |
| 包装： | 散装 |
ACS750xCA-50
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with High Voltage Isolation and a Low-Resistance Current Conductor
Definitions of Accuracy Characteristics
Sensitivity (Sens). The change in device 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/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 IC varies in direct proportion to the primary current through
its full-scale amplitude. Nonlinearity in the output can be attrib-
uted to the saturation of the flux concentrator approaching the
full-scale current. The following equation is used to derive the
Quiescent output voltage (V IOUT(Q) ). The output of the device
when the primary current is zero. For a unipolar supply voltage,
it nominally remains at V CC ? 2. Thus, V CC = 5 V translates into
V IOUT(Q) = 2.5 V. Variation in V OUT(Q) can be attributed to the res-
olution of the Allegro linear IC quiescent voltage trim, magnetic
hysteresis, and thermal drift.
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.
Magnetic offset error (I ERROM ). The magnetic offset is due to
the residual magnetism (remnant field) of the core material. The
magnetic offset error is highest when the magnetic circuit has
been saturated, usually when the device has been subjected to a
full-scale or high-current overload condition. The magnetic offset
is largely dependent on the material used as a flux concentrator.
{ [
linearity:
100 1–
Δ gain × % sat ( V IOUT _full-scale amperes – V IOUT(Q) )
2 ( V IOUT _half-scale amperes – V IOUT(Q) )
[{
The larger magnetic offsets are observed at the lower operating
temperatures.
Accuracy (E TOT ). The accuracy represents the maximum devia-
where
? gain = the gain variation as a function of temperature
changes from 25oC,
% sat = the percentage of saturation of the flux concentra-
tor, which becomes significant as the current being sampled
approaches full-scale ±I P , and
V IOUT_full-scale amperes = the output voltage (V) when the
sampled current approximates full-scale ±I P .
Symmetry (E SYM ). The degree to which the absolute voltage
output from the IC varies in proportion to either a positive or
negative full-scale primary current. The following equation is
used to derive symmetry:
tion of the actual output from its ideal value. This is also known
as the total output error. The accuracy is illustrated graphically in
the output voltage versus current chart on the following page.
Accuracy is divided into four areas:
?? 0 A at 25°C. Accuracy at the zero current flow at 25°C, with-
out the effects of temperature.
?? 0 A over Δ temperature. Accuracy at the zero current flow
including temperature effects.
?? Full-scale current at 25°C. Accuracy at the the full-scale current
at 25°C, without the effects of temperature.
100
?
V IOUT _+ full-scale amperes – V IOUT(Q )
V IOUT(Q) – V IOUT _–full-scale amperes
?
?? Full-scale current over Δ temperature. Accuracy at the full-
scale current flow including temperature effects.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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| ACS750SCA-075 | 功能描述:SENSOR CURRENT 75A 5V BI 5-CA RoHS:否 类别:传感器，转换器 >> 电流 系列:- 标准包装:10 系列:* |
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