ACS710 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
ACS710
Allegro MicroSystems
'ACS710' PDF : 24 Pages View PDF
ACS710
120 kHz Bandwidth, High-Voltage Isolation
Current Sensor with Integrated Overcurrent Detection
Definitions of Dynamic Response Characteristics
I (%)
Primary Current
Propagation delay (tPROP). The time required for the sensor
output to reflect a change in the primary current signal. Propaga-
tion delay is attributed to inductive loading within the linear IC
package, as well as in the inductive loop formed by the primary
conductor geometry. Propagation delay can be considered as a
fixed-time offset and may be compensated.
90
Transducer Output
0
t
Propagation Time, tPROP
I (%)
90
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.
0
Primary Current
Transducer Output
t
Response Time, tRESPONSE
I (%)
Rise time (tr). The time interval between a) when the sensor
reaches 10% of its full-scale value, and b) when it reaches 90%
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.
10
0
Primary Current
Transducer Output
t
Rise Time, tr
Allegro MicroSystems, LLC
21
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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