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ACS758LCB-100U-PFF-T Datasheet(PDF) 6 Page - Allegro MicroSystems

Part # ACS758LCB-100U-PFF-T
Description  The Allegro ACS758 family of current sensor ICs provides economical and precise solutions for AC or DC current sensing.
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

ACS758LCB-100U-PFF-T Datasheet(HTML) 6 Page - Allegro MicroSystems

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Thermally Enhanced, Fully Integrated, Hall Effect-Based
Linear Current Sensor IC with 100 μΩ Current Conductor
ACS758xCB
6
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
COMMON OPERATING CHARACTERISTICS1 valid at T
OP = –40°C to 150°C and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage2
VCC
3
5.0
5.5
V
Supply Current
ICC
Output open
10
13.5
mA
Power-On Delay
tPOD
TA = 25°C
10
μs
Rise Time3
tr
IP step = 60% of IP+, 10% to 90% rise time, TA = 25°C,
COUT = 0.47 nF
–3–
μs
Propagation Delay Time3
tPROP
TA = 25°C, COUT = 0.47 nF
1
μs
Response Time
tRESPONSE
Measured as sum of tPROP and tr
–4–
μs
Internal Bandwidth4
BWi
–3 dB; TA = 25°C, COUT = 0.47 nF
120
kHz
Output Load Resistance
RLOAD(MIN)
VIOUT to GND
4.7
Output Load Capacitance
CLOAD(MAX)
VIOUT to GND
10
nF
Primary Conductor Resistance
RPRIMARY
TA = 25°C
100
μΩ
Symmetry3
ESYM
Over half-scale of Ip
99
100
101
%
Quiescent Output Voltage5
VIOUT(QBI)
Bidirectional variant, IP = 0 A, TA = 25°C
VCC/2
V
VIOUT(QUNI)
Unidirectional variant, IP = 0 A, TA = 25°C, VIOUT(QUNI) is
ratiometric to VCC
0.6
V
Ratiometry3
VRAT
VCC = 4.5 to 5.5 V
100
%
1Device is factory-trimmed at 5 V, for optimal accuracy.
2Devices are programmed for maximum accuracy at 5.0 V VCC levels. The device contains ratiometry circuits that accurately alter the 0 A Output Volt-
age and Sensitivity level of the device in proportion to the applied VCC level. However, as a result of minor nonlinearities in the ratiometry circuit ad-
ditional output error will result when VCC varies from the 5 V VCC level. Customers that plan to operate the device from a 3.3 V regulated supply should
contact their local Allegro sales representative regarding expected device accuracy levels under these bias conditions.
3See Characteristic Definitions section of this datasheet.
4Calculated using the formula BWi = 0.35 / tr.
5VIOUT(Q) may drift over the lifetime of the device by as much as ±25 mV.


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