ACS750LCA-075 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'ACS750LCA-075' PDF : 12 Pages View PDF
Current Sensor: ACS750xCA-075
Definitions of Dynamic Response Characteristics
Propagation delay (tPROP): The time required for the sensor output to reflect a change in the primary current
signal. Propagation delay is attributed to inductive loading within the linear IC package, as well as in the induc-
tive loop formed by the primary conductor geometry. Propagation delay can be considered as a fixed time offset
and may be compensated.
I (%)
90
Primary Current
Transducer Output
0
t
Propagation Time, tPROP
Response time (tRESPONSE): The time interval between a) when the primary current signal reaches 90% of its
final value, and b) when the sensor reaches 90% of its output corresponding to the applied current.
I (%)
90
Primary Current
Transducer Output
0
t
Response Time, tRESPONSE
Rise time (tr): The time interval between a) when the sensor reaches 10% of its full scale value, and b) when
it reaches 90% of its full scale value. The rise time to a step response is used to derive the bandwidth of the
current sensor, in which ƒ(–3 dB) = 0.35 / tr. Both tr and tRESPONSE are detrimentally affected by eddy current
losses observed in the conductive IC ground plane and, to varying degrees, in the ferrous flux concentrator
within the current sensor package.
I (%)
90
Primary Current
Transducer Output
10
0
t
Rise Time, tr
ACS75075-DS Rev. 7
8
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Worcester, Massachusetts 01615-0036 (508) 853-5000
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