Data Sheet

Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with
2.1 kVRMS Isolation and a Low-Resistance Current Conductor
ACS712
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
x05B PERFORMANCE CHARACTERISTICS
1
T
A
= –40°C to 85°C, 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
–5 – 5 A
Sensitivity Sens Over full range of I
P,
T
A
= 25°C 180 185 190 mV/A
Noise V
NOISE(PP)
Peak-to-peak, T
A
= 25°C, 185 mV/A programmed Sensitivity,
C
F
= 47 nF, C
OUT
= open, 2 kHz bandwidth
– 21 – mV
Zero Current Output Slope ∆V
OUT(Q)
T
A
= –40°C to 25°C – –0.26 – mV/°C
T
A
= 25°C to 150°C – –0.08 – mV/°C
Sensitivity Slope ∆Sens
T
A
= –40°C to 25°C – 0.054 – mV/A/°C
T
A
= 25°C to 150°C – –0.008 – mV/A/°C
Total Output Error
2
E
TOT
I
P
=±5 A, T
A
= 25°C – ±1.5 – %
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
= 5 A. Output filtered.
x20A PERFORMANCE CHARACTERISTICS
1
T
A
= –40°C to 85°C, 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
–20 – 20 A
Sensitivity Sens Over full range of I
P,
T
A
= 25°C 96 100 104 mV/A
Noise V
NOISE(PP)
Peak-to-peak, T
A
= 25°C, 100 mV/A programmed Sensitivity,
C
F
= 47 nF, C
OUT
= open, 2 kHz bandwidth
– 11 – mV
Zero Current Output Slope ∆V
OUT(Q)
T
A
= –40°C to 25°C – –0.34 – mV/°C
T
A
= 25°C to 150°C – –0.07 – mV/°C
Sensitivity Slope ∆Sens
T
A
= –40°C to 25°C – 0.017 – mV/A/°C
T
A
= 25°C to 150°C – –0.004 – mV/A/°C
Total Output Error
2
E
TOT
I
P
=±20 A, T
A
= 25°C – ±1.5 – %
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
= 20 A. Output filtered.
x30A PERFORMANCE CHARACTERISTICS
1
T
A
= –40°C to 85°C, 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
–30 – 30 A
Sensitivity Sens Over full range of I
P
, T
A
= 25°C 63 66 69 mV/A
Noise V
NOISE(PP)
Peak-to-peak, T
A
= 25°C, 66 mV/A programmed Sensitivity,
C
F
= 47 nF, C
OUT
= open, 2 kHz bandwidth
– 7 – mV
Zero Current Output Slope ∆V
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 ∆Sens
T
A
= –40°C to 25°C – 0.007 – mV/A/°C
T
A
= 25°C to 150°C – –0.002 – mV/A/°C
Total Output Error
2
E
TOT
I
P
= ±30 A , T
A
= 25°C – ±1.5 – %
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
= 30 A. Output filtered.