ACS710KLATR-25CB-T Allegro Microsystems Inc, ACS710KLATR-25CB-T Datasheet

IC, CURRENT SENSOR, 11mA, 16-SOIC

ACS710KLATR-25CB-T

Manufacturer Part Number
ACS710KLATR-25CB-T
Description
IC, CURRENT SENSOR, 11mA, 16-SOIC
Manufacturer
Allegro Microsystems Inc
Series
-r
Datasheet

Specifications of ACS710KLATR-25CB-T

Quiescent Current
11mA
Bandwidth
120kHz
Sensor Case Style
SOIC
No. Of Pins
16
Supply Voltage Range
3V To 5.5V
Operating Temperature Range
-40°C To +125°C
Msl
MSL 3 - 168 Hours
Featured Product
ACS710 Current Sensor IC
Current - Sensing
±25A
Accuracy
±4.05%
Sensitivity
28mV/A
Current - Supply
11mA
Sensor Type
Hall Effect
Voltage - Supply
3 V ~ 5.5 V
Output
2.5V
Frequency
120kHz
Response Time
4µs
Polarization
Bidirectional
Operating Temperature
-40°C ~ 125°C
Package / Case
16-SOIC (0.295", 7.50mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Features and Benefits
▪ Industry-leading noise performance with greatly improved
▪ Small footprint package suitable for space-constrained
▪ 1 mΩ primary conductor resistance for low power loss
▪ High isolation voltage, suitable for line-powered
▪ User-adjustable Overcurrent Fault level
▪ Overcurrent Fault signal typically responds to an
▪ Integrated shield virtually eliminates capacitive coupling
▪ Filter pin capacitor improves resolution in low bandwidth
▪ 3 to 5.5 V, single supply operation
▪ Factory trimmed sensitivity and quiescent output voltage
▪ Chopper stabilization results in extremely stable quiescent
▪ Ratiometric output from supply voltage
Package: 16-pin SOIC Hall Effect IC
Package (suffix LA)
ACS710-DS, Rev. 5
bandwidth through proprietary amplifier and filter design
techniques
applications
applications
overcurrent condition in < 2 μs
from current conductor to die due to high dV/dt voltage
transients
applications
output voltage
I
P
1
2
3
4
5
6
7
8
IP+
IP+
IP+
IP+
IP–
IP–
IP–
IP–
Current Sensor with Integrated Overcurrent Detection
ACS710
FAULT_EN
FILTER
FAULT
VIOUT
VZCR
Approximate Scale 1:1
GND
VOC
VCC
16
15
14
13
12
11
10
9
120 kHz Bandwidth, High Voltage Isolation
Fault_EN
V
IOUT
C
OC
1 nF
A
R
R
R
L
B
H
PU
C
V
F
CC
0.1 μF
Description
The Allegro
precise means for current sensing applications in industrial,
commercial, and communications systems. The device is offered
in a small footprint surface mount package that allows easy
implementation in customer applications.
The ACS710 consists of a precision linear Hall sensor integrated
circuit with a copper conduction path located near the surface
of the silicon die. Applied current flows through the copper
conduction path, and the analog output voltage from the Hall
sensor linearly tracks the magnetic field generated by the
applied current. The accuracy of the ACS710 is maximized
with this patented packaging configuration because the Hall
element is situated in extremely close proximity to the current
to be measured.
High level immunity to current conductor dV/dt and stray
electric fields, offered by Allegro proprietary integrated shield
technology, guarantees low ripple at output and low offset drift
in high-side, high voltage applications.
The voltage on the Overcurrent Input (VOC pin) allows
customers to define an overcurrent fault threshold for the device.
When the current flowing through the copper conduction path
(between the IP+ and IP– pins) exceeds this threshold, the open
drain Overcurrent Fault pin will transition to a logic low state.
Factory programming of the linear Hall sensor inside of the
ACS710 results in exceptional accuracy in both analog and
digital output signals.
The internal resistance of the copper path used for current
sensing is typically 1 mΩ, for low power loss. Also, the current
conduction path is electrically isolated from the low voltage
Continued on the next page…
R
C
H
C
A
B
, R
OC
F
L
®
ACS710 current sensor provides economical and
Sets resistor divider reference for V
Noise and bandwidth limiting filter capacitor
Fault delay setting capacitor, 22 nF maximum
Use of capacitor required
Use of resistor optional, 330 kΩ recommended.
If used, resistor must be connected between
¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ pin and V
CC
.
ACS710
OC

Related parts for ACS710KLATR-25CB-T

ACS710KLATR-25CB-T Summary of contents

Page 1

... ACS710 results in exceptional accuracy in both analog and digital output signals. The internal resistance of the copper path used for current sensing is typically 1 mΩ, for low power loss. Also, the current conduction path is electrically isolated from the low voltage Continued on the next page… ...

Page 2

... Selection Guide I P Part Number (A) ACS710KLATR-6BB-T ±6 ACS710KLATR-12CB-T ±12.5 ACS710KLATR-25CB-T ±25 *Contact Allegro for packing options. Absolute Maximum Ratings Characteristic Supply Voltage Filter Pin Analog Output Pin Overcurrent Input Pin Overcurrent ¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ Pin ...

Page 3

... VCC Supply voltage. Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault 15 VOC threshold. FAULT_EN Enables overcurrent faulting when high. Resets ¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ when low CLK R POR Fault Latch Drain – ...

Page 4

... PO no capacitor on FILTER pin NCOMP Switchpoint in V safe operating area assumes NCOMP sink current at ¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ pin ¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ unless otherwise specified CC Min. Typ. 3 – – – 3.3 V – ...

Page 5

... Fault Enable Delay is designed to avoid false tripping of an Overcurrent (OC) fault at power-up μs (typical) delay will always be needed, every time FAULT_EN is raised from low to high, before the device is ready for responding to any overcurrent event. 120 kHz Bandwidth, High Voltage Isolation (continued) Valid – ...

Page 6

... ACS710 Current Sensor with Integrated Overcurrent Detection PERFORMANCE CHARACTERISTICS Characteristic Symbol X6B CHARACTERISTICS Optimized Accuracy Range 1 I POA Linear Sensing Range I R X6B Characteristics 3 Noise 2 V NOISE(rms) Sensitivity 3 Sens Electrical Offset Voltage Variation Relative OUT(QBI) 5 Total Output Error E TOT X12C CHARACTERISTICS ...

Page 7

... Although the device is accurate over the entire linear range, the device is programmed for maximum accuracy over the range defined by I The reason for this is that in many applications, such as motor control, the start-up current of the motor is approximately three times higher than the running current ...

Page 8

... ACS710 Current Sensor with Integrated Overcurrent Detection ACS710 Bandwidth versus External Capacitor Value, C 1000 100 10 1 0.1 0.01 ACS710x-25C V CC 1000 900 800 700 600 500 400 Capacitance (nF) ACS710x-12C V CC 1600 1400 1200 1000 800 600 400 200 Capacitance (nF) 120 kHz Bandwidth, High Voltage Isolation ...

Page 9

... ACS710 Current Sensor with Integrated Overcurrent Detection Electrical Offset Voltage versus Ambient Temperature -10 -15 -20 -25 –50 - Nonlinearity versus Ambient Temperature 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 -0.35 -0.40 -0.45 –50 - 120 kHz Bandwidth, High Voltage Isolation Characteristic Performance Data ...

Page 10

... ACS710 Current Sensor with Integrated Overcurrent Detection Electrical Offset Voltage versus Ambient Temperature -10 -15 -20 -25 –50 - Nonlinearity versus Ambient Temperature 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 -0.35 –50 - 120 kHz Bandwidth, High Voltage Isolation Characteristic Performance Data Data taken using the ACS710-25CB, V Accuracy Data 29 ...

Page 11

... CC 0 – 0. Sens CC – 0 Sens CC Example: For ACS710KLATR-25CB-T, if required overcurrent fault switchpoint and V required V can be calculated as follows: OC 120 kHz Bandwidth, High Voltage Isolation Setting Overcurrent Fault Switchpoint | Ioc | is the overcurrent fault switchpoint for a bi- directional (AC) current, which means a bi-directional sensor will have two symmetrical overcurrent fault ...

Page 12

... This figure shows different fault set/reset scenarios and how they relate to the voltages on the ¯ F ¯ ¯ A ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯ pin, FAULT_EN pin, and the internal Overcurrent (OC) Fault node, which is invisible to the customer. ...

Page 13

... The ¯ F ¯ ¯ A ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯ pin did not reach the 2 V latch point before the OC fault condition cleared. Because of this, the fixed 3 mA current sink turns off, and the internal PMOS pull-up turns on through the ¯ F ¯ ¯ A ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯ pin. ...

Page 14

... Allegro. 120 kHz Bandwidth, High Voltage Isolation Accuracy is divided into four areas:  25°C. Accuracy of sensing zero current flow at 25°C, without the effects of temperature.  over Δ temperature. Accuracy of sensing zero current flow including temperature effects. ...

Page 15

... The time interval between a) when the sensor r reaches 10% of its full scale value, and b) when it reaches 90% of its full scale value. The rise time to a step response is used to derive the bandwidth of the current sensor, in which ƒ(–3 dB Both t and t are detrimentally affected by eddy ...

Page 16

... ACS710 Current Sensor with Integrated Overcurrent Detection 10.30 ±0. 16X 0.10 C 1.27 BSC 0.51 0.31 For Reference Only; not for tooling use (reference MS-013AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown ...

Page 17

... Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro’s products are not to be used in life support devices or systems failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system affect the safety or effectiveness of that device or system. The in for ma tion in clud ed herein is believed rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use ...

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