INA220B-Q1_15 Datasheet, PDF (1/40 Pages) Texas Instruments – High- or Low-Side, Bidirectional Current Power Monitor with 2-Wire Interface

INA220B-Q1
www.ti.com
SLOS785A – JUNE 2012 – REVISED JUNE 2012
High- or Low-Side, Bidirectional
Current Power Monitor with 2-Wire Interface
Check for Samples: INA220B-Q1
FEATURES
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• 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 H2
– Device CDM ESD Classification Level C3B
• High- or Low-Side Sensing
• Senses Bus Voltages From 0 V to 26 V
• Reports Current, Voltage, and Power
• 16 Programmable Addresses
• High Accuracy: 0.5% (Max) Over Temperature
(INA220B-Q1)
• User-Programmable Calibration
• Fast (3.4 MHz) 2-Wire Mode
• MSOP-10 Package
DESCRIPTION
The INA220B-Q1 device is a current shunt and power
monitor with an 2-wire interface. The INA220B-Q1
device monitors both shunt drop and supply voltage.
A programmable calibration value, combined with an
internal multiplier, enables direct readouts in
amperes. An additional multiplying register calculates
power in watts. The 2-wire interface features 16
programmable addresses. The separate shunt input
on the INA220B-Q1 device allows it to be used in
systems with low-side sensing.
The INA220B-Q1 device is available in two grades: A
and B. The B grade version has higher accuracy and
higher precision specifications.
The INA220B-Q1 device senses across shunts on
buses that can vary from 0 V to 26 V, useful for low-
side sensing or CPU power supplies. The device
uses a single 3 V to 5.5 V supply, drawing a
maximum of 1 mA of supply current. The INA220B-
Q1 device operates from –40°C to 125°C.
APPLICATIONS
• Automotive
• Servers
• Telecom Equipment
• Notebook Computers
• Power Management
• Battery Chargers
• Power Supplies
• Test Equipment
RELATED PRODUCTS
DESCRIPTION
DEVICE
Current/Power Monitor with Watchdog, Peak-Hold,
and Fast Comparator Functions
INA209
Zero-Drift, Low-Cost, Analog Current Shunt Monitor
Series in Small Package
INA210, INA211,
INA212, INA213,
INA214
Zero-Drift, Bidirectional Current Power Monitor with
2-Wire Interface
INA219
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated