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
1
FEATURES
DESCRIPTION
The INA220B-Q1 device is a current shunt and power
•
•
Qualified for Automotive Applications
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.
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
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.
High Accuracy: 0.5% (Max) Over Temperature
(INA220B-Q1)
•
•
•
User-Programmable Calibration
Fast (3.4 MHz) 2-Wire Mode
MSOP-10 Package
RELATED PRODUCTS
DESCRIPTION
APPLICATIONS
DEVICE
•
•
•
•
•
•
•
•
Automotive
Current/Power Monitor with Watchdog, Peak-Hold,
and Fast Comparator Functions
INA209
Servers
INA210, INA211,
INA212, INA213,
INA214
Telecom Equipment
Notebook Computers
Power Management
Battery Chargers
Power Supplies
Test Equipment
Zero-Drift, Low-Cost, Analog Current Shunt Monitor
Series in Small Package
Zero-Drift, Bidirectional Current Power Monitor with
2-Wire Interface
INA219
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
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