ACS756 Allegro MicroSystems, Inc., ACS756 Datasheet - Page 8

• Manufacturer Part Number: ACS756
• Description: Acs756 Fully Integrated, Hall Effect-based Linear Current Sensor With 3 Kvrms Voltage Isolation And A Low-resistance Current Conductor
• Manufacturer: Allegro MicroSystems, Inc.

Power-On Time (t
ing voltage, the device requires a finite time to power its internal
components before responding to an input magnetic field.
Power-On Time, t
voltage to settle within ±10% of its steady state value under an
applied magnetic field, after the power supply has reached its
minimum specified operating voltage, V
chart at right.
Rise time (t
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 / t
current losses observed in the conductive IC ground plane.
ACS756
Definitions of Dynamic Response Characteristics
Propagation delay (t
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.
r
. Both t
I (%)
I (%)
r
90
10
90
). The time interval between a) when the sensor
0
0
r
and t
PO
PO
RESPONSE
Propagation Time, t
, is defined as the time it takes for the output
). When the supply is ramped to its operat-
PROP
Primary Current
Primary Current
Rise Time, t
). The time required for the sensor
Transducer Output
Transducer Output
are detrimentally affected by eddy
PROP
r
3 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
CC
(min), as shown in the
Fully Integrated, Hall Effect-Based Linear Current Sensor with
t
t
–I
P
(A)
Total Output Error at 0 A and at Half-Scale Current
I
P
(min)
Output Voltage versus Sensed Current
O e
O e
Accuracy
v r
v r
Temp erature
Accuracy
25°C Only
Temp erature
25°C Only
Accuracy
Accuracy
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
0 A
Increasing V
Decreasing V
Average
V
IOUT
IOUT
Accuracy
25°C Only
IOUT
(V)
(V)
Half Scale
I
P
(max)
O e
Accuracy
v r
+I
Temp erature
P
(A)
8