INA250-Q1 Datasheet, PDF (1/8 Pages) Texas Instruments – Current-Shunt Monitor with Precision Integrated Shunt Resistor

INA250-Q1
SBOS805 – JULY 2016
INA250-Q1, Automotive 36-V, Low- or High-Side, Bidirectional, Zero-Drift
Current-Shunt Monitor with Precision Integrated Shunt Resistor
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C5
• Precision Integrated Shunt Resistor:
– Shunt Resistor: 2 mΩ
– Shunt Resistor Tolerance: 0.1% (Maximum)
– 15 A Continuous from –40°C to +85°C
– 0°C to 125°C Temperature Coefficient:
10 ppm/°C
• High Accuracy:
– Gain Error (Shunt and Amplifier): 0.3%
(Maximum)
– Offset Current: 50 mA (Maximum, INA250A2-
Q1)
• Four Available Gains:
– INA250A1-Q1: 200 mV/A
– INA250A2-Q1: 500 mV/A
– INA250A3-Q1: 800 mV/A
– INA250A4-Q1: 2 V/A
• Wide Common-Mode Range: –0.1 V to 36 V
• Specified Operating Temperature: –40°C to
+125°C
2 Applications
• Body Control Modules
• DC/DC Converter
• Battery Management Systems
• Engine Control Systems
• Suspension Systems
3 Description
The automotive qualified INA250-Q1 is a voltage-
output, current-sensing amplifier family that integrates
an internal precision shunt resistor to enable high-
accuracy current measurements at common-mode
voltages that may vary from 0 V to 36 V, independent
of the supply voltage.
The INA250-Q1 family is available in four output
voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and
2 V/A. This device is fully tested and specified for
continuous currents up to 10 amps at the maximum
temperature of 125°C. The INA250-Q1 device
operates from a single 2.7-V to 36-V supply and
draws a maximum of 300 µA of supply current. All
INA250-Q1 gain versions are specified over the
extended operating temperature range (–40°C to
+125°C), and are available in a TSSOP-16 package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA250-Q1
TSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Power Rail
(0 V to 36 V)
Simplified Schematic
Device Supply
(2.7 V to 36 V)
CBYPASS
0.1 µF
IN+ SH+
VIN+
VS
REF
+
OUT
±
ADC
Microcontroller
IN- SH-
Load
VIN-
GND
ADC
Copyright © 2016, Texas Instruments Incorporated
1
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.