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ACS709
High Bandwidth, Fast Fault Response Current Sensor IC
In Thermally Enhanced Package
COMMON OPERATING CHARACTERISTICS Valid at T A = –40°C to 150°C, V CC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
ELECTRICAL CHARACTERISTICS
Supply Voltage 1
Nominal Supply Voltage
V CC
V CCN
3
–
–
5
5.5
–
V
V
Supply Current
Output Capacitance Load
Output Resistive Load
Magnetic Coupling from Device Conductor
to Hall Element
Internal Filter Resistance 2
I CC
C LOAD
R LOAD
MC HALL
R F(INT)
VIOUT open, ˉFˉ ˉA ˉUˉˉLˉ ˉTˉ pin high
VIOUT pin to GND
VIOUT pin to GND
Current flowing from IP+ to IP– pins
–
–
10
–
–
11
–
–
9.5
1.7
14.5
10
–
–
–
mA
nF
k Ω
G/A
k Ω
Primary Conductor Resistance R PRIMARY
T A = 25°C
–
1.1
–
m Ω
ANALOG OUTPUT SIGNAL CHARACTERISTICS
Full Range Linearity 3
Symmetry 4
E LIN
E SYM
I P = ±I P0A
I P = ±I P0A
–0.75
99.1
±0.25
100
0.75
100.9
%
%
Bidirectional Quiescent Output V OUT(QBI)
I P = 0 A, T A = 25°C
–
V CC ×0.5
–
V
TIMING PERFORMANCE CHARACTERISTICS
VIOUT Signal Rise Time
VIOUT Signal Propagation Time
VIOUT Signal Response Time
VIOUT Large Signal Bandwidth 5
Power-On Time
t r
t PROP
t RESPONSE
f 3dB
t PO
T A = 25°C, Swing I P from 0 A to I P0A ,
no capacitor on FILTER pin, 100 pF from
VIOUT to GND
T A = 25°C, no capacitor on FILTER pin,
100 pF from VIOUT to GND
T A = 25°C, Swing I P from 0 A to I P0A ,
no capacitor on FILTER pin, 100 pF from
VIOUT to GND
–3 dB, T A = 25°C, no capacitor on FILTER
pin, 100 pF from VIOUT to GND
Output reaches 90% of steady-state level,
no capacitor on FILTER pin, T A = 25°C
–
–
–
–
–
3
1
4
120
35
–
–
–
–
–
μ s
μ s
μ s
kHz
μ s
OVERCURRENT CHARACTERISTICS
Setting Voltage for Overcurrent Switchpoint 6
Signal Noise at Overcurrent
Comparator Input
V OC
I NCOMP
V CC ×0.25
–
–
±1
V CC ×0.4
–
V
A
Overcurrent Fault Switchpoint Error 7,8
Overcurrent ˉFˉ ˉA ˉUˉˉLˉ ˉTˉ Pin Output Voltage
Fault Enable (FAULT_EN Pin) Input Low
Voltage Threshold
Fault Enable (FAULT_EN Pin) Input High
Voltage Threshold
Fault Enable (FAULT_EN Pin) Input
Resistance
E OC
V ˉFˉ ˉA ˉUˉˉLˉ ˉTˉ
V IL
V IH
R FEI
Switchpoint in V OC safe operating area;
assumes I NCOMP = 0 A
1 mA sink current at ˉFˉ ˉA ˉUˉˉLˉ ˉTˉ pin
–
–
–
0.8 × V CC
–
±5
–
–
–
1
–
0.4
0.1 × V CC
–
–
%
V
V
V
M Ω
Continued on the next page…
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
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