Datasheet

Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS714
8
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
x50A PERFORMANCE CHARACTERISTICS over Range L: T
A
= –40°C to 150°C
1
, C
F
= 1 nF, and V
CC
= 5 V, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Optimized Accuracy Range I
P
–50 – 50 A
Sensitivity Sens
Over full range of I
P
, T
A
= 25°C – 40 – mV/A
Over full range of I
P
, T
A
= –40°C to 150°C 37.5 – 42.5 mV/A
Noise V
NOISE(PP)
Peak-to-peak, T
A
= 25°C, 40 mV/A programmed Sensitivity,
C
F
= 47 nF, C
OUT
= open, 2 kHz bandwidth
– 4.5 – mV
Zero Current Output Slope
ΔV
OUT(Q)
T
A
= –40°C to 25°C – –0.35 – mV/°C
T
A
= 25°C to 150°C – –0.08 – mV/°C
Sensitivity Slope
ΔSens
T
A
= –40°C to 25°C – 0.007 – mV/A/°C
T
A
= 25°C to 150°C – –0.002 – mV/A/°C
Electrical Output Voltage V
OE
I
P
= 0 A, T
A
= 25°C –40 – 40 mV
Total Output Error
2
E
TOT
I
P
= ±40 A , T
A
= 25°C – ±1.5 – %
I
P
= ±40 A , T
A
= –40°C to 150°C – ±6 – %
1
Device may be operated at higher primary current levels, I
P
, and ambient temperatures, T
A
, provided that the Maximum Junction Temperature,
T
J
(max), is not exceeded.
2
Percentage of I
P
, with I
P
= 40 A. Output filtered.