Data Sheet

High Bandwidth, Fast Fault Response Current Sensor IC
In Thermally Enhanced Package
ACS709
7
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
X35BB PERFORMANCE CHARACTERISTICS, T
A
Range L, valid at T
A
= – 40°C to 150°C, V
CC
= 5 V, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Optimized Accuracy Range I
P(OA)
–37.5 – 37.5 A
Linear Sensing Range I
P(LIN)
–75 – 75 A
Performance Characteristics at V
CC
= 5 V
Noise
1
V
NOISE(rms)
T
A
= 25°C, Sens = 28 mV/A, C
f
= 0, C
LOAD
= 4.7 nF, R
LOAD
open – 1 – mV
Sensitivity
2,3
Sens
I
P
= 25 A, T
A
= 25°C – 28 – mV/A
I
P
= 25 A, T
A
= 25°C to 150°C 27 – 29.5 mV/A
I
P
= 25 A, T
A
= – 40°C to 25°C 27 – 29.5 mV/A
Electrical Offset Voltage
2
V
OE
I
P
= 0 A, T
A
= 25°C – ±5 – mV
I
P
= 0 A, T
A
= 25°C to 150°C –25 – 25 mV
I
P
= 0 A, T
A
= – 40°C to 25°C –40 – 40 mV
Total Output Error
2,4
E
TOT
Tested at I
P
= 25 A , I
P
applied for 5 ms, T
A
= 25°C to 150°C – ±3 – %
Tested at I
P
= 25 A , I
P
applied for 5 ms, T
A
= – 40°C to 25°C – ±3 – %
1
V
pk-pk
noise (6 sigma noise) is equal to 6 × V
NOISE(rms)
. Lower noise levels than this can be achieved by using C
f
for applications requiring narrower
bandwidth. See Characteristic Performance page for graphs of noise versus C
f
and bandwidth versus C
f
.
2
See Characteristic Performance Data graphs for parameter distribution over ambient temperature range.
3
This parameter can drift by as much as 1.75% over lifetime of the product.
4
This parameter can drift by as much as 2.5% over lifetime of the product.
X20BB PERFORMANCE CHARACTERISTICS, T
A
Range L, valid at T
A
= – 40°C to 150°C, V
CC
= 5 V, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Optimized Accuracy Range I
P(OA)
–20 – 20 A
Linear Sensing Range I
P(LIN)
–37.5 – 37.5 A
Performance Characteristics at V
CC
= 5 V
Noise
1
V
NOISE(rms)
T
A
= 25°C, Sens = 56 mV/A, C
f
= 0, C
LOAD
= 4.7 nF, R
LOAD
open – 1.50 – mV
Sensitivity
2,3
Sens
I
P
= 12.5 A, T
A
= 25°C – 56 – mV/A
I
P
= 12.5 A, T
A
= 25°C to 150°C 54.5 – 58 mV/A
I
P
= 12.5 A, T
A
= – 40°C to 25°C 54.5 – 58.5 mV/A
Electrical Offset Voltage
2
V
OE
I
P
= 0 A, T
A
= 25°C – ±5 – mV
I
P
= 0 A, T
A
= 25°C to 150°C –25 – 25 mV
I
P
= 0 A, T
A
= – 40°C to 25°C –40 – 40 mV
Total Output Error
2,4
E
TOT
Tested at I
P
=12.5 A , I
P
applied for 5 ms, T
A
= 25°C to 150°C – ±2 – %
Tested at I
P
=12.5 A , I
P
applied for 5 ms, T
A
= – 40°C to 25°C – ±3 – %
1
V
pk-pk
noise (6 sigma noise) is equal to 6 × V
NOISE(rms)
. Lower noise levels than this can be achieved by using C
f
for applications requiring narrower
bandwidth. See Characteristic Performance page for graphs of noise versus C
f
and bandwidth versus C
f
.
2
See Characteristic Performance Data graphs for parameter distribution over ambient temperature range.
3
This parameter can drift by as much as 1.75% over lifetime of the product.
4
This parameter can drift by as much as 2.5% over lifetime of the product.