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INA181A4IDBVT Datasheet(PDF) 1 Page - Texas Instruments

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Part # INA181A4IDBVT
Description  INAx181 Bidirectional, Low- and High-Side Voltage Output, Current-Sense Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA181A4IDBVT Datasheet(HTML) 1 Page - Texas Instruments

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INA181 (Single-Channel)
Power Supply, VS
2.7 V to 5.5 V
ADC
Microcontroller
Bus Voltage, VCM
Up To 26 V
RSENSE
GND
VS
Load
IN±
IN+
OUT
REF
+
±
CBYPASS
0.1 µF
Copyright © 2017, Texas Instruments Incorporated
INA2181 (Dual-Channel)
Product
Folder
Order
Now
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Documents
Tools &
Software
Support &
Community
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.
INA181, INA2181
SBOS793A – APRIL 2017 – REVISED AUGUST 2017
INAx181 Bidirectional, Low- and High-Side Voltage Output,
Current-Sense Amplifier
1
1 Features
1
Common-Mode Range (VCM): –0.2 V to +26 V
High Bandwidth: 350 kHz
Offset Voltage:
±150 µV (Max) at VCM = 0 V
±500 µV (Max) at VCM = 12 V
Output Slew Rate: 2 V/µs
Bidirectional Current-Sensing Capability
Accuracy:
±1% Gain Error (Max)
1-µV/°C Offset Drift (Max)
Gain Options:
20 V/V (A1 Devices)
50 V/V (A2 Devices)
100 V/V (A3 Devices)
200 V/V (A4 Devices)
Quiescent Current: 260 µA (Max per Channel)
2 Applications
Motor Control
Battery Monitoring
Power Management
Lighting Control
Overcurrent Detection
Solar Inverters
3 Description
The INA181 and INA2181 (INAx181) current sense
amplifiers
are
designed
for
cost-optimized
applications. These devices are part of a family of
bidirectional, current-sense amplifiers (also called
current-shunt monitors) that sense voltage drops
across current-sense resistors at common-mode
voltages from –0.2 V to +26 V, independent of the
supply voltage. The INAx181 family integrates a
matched resistor gain network in four, fixed-gain
device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V.
This matched gain resistor network minimizes gain
error and reduces the temperature drift.
Both the INA181 and INA2181 operate from a single
2.7-V to 5.5-V power supply. The single-channel
INA181 draws a maximum supply current of 260 µA;
whereas,
the
dual-channel
INA2181
draws
a
maximum supply current of 520 µA.
The INA181 is available in a 6-pin, SOT-23 package,
and the INA2181 is available in an 10-pin VSSOP
package. All device options are specified over the
extended operating temperature range of –40°C to
+125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA181
SOT-23 (6)
2.90 mm × 1.60 mm
INA2181(2)
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
(2) INA2181 is preview device.
Typical Application Circuit


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