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INA220

Texas Instruments
Part Number INA220
Manufacturer Texas Instruments
Description Bidirectional Current and Power Monitor
Published Dec 26, 2019
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community INA220 SBOS459E – JUNE 2009 – REV...
Datasheet PDF File INA220 PDF File

INA220
INA220

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community INA220 SBOS459E – JUNE 2009 – REVISED JANUARY 2016 INA220 High- or Low-Side, Bidirectional Current and Power Monitor With Two-Wire Interface 1 Features •1 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% (Maximum) Over Temperature (INA220B) • User-Programmable Calibration • Fast (2.
56-MHz) I2C- or SMBUS-Compatible Interface • VSSOP-10 Package 2 Applications • Servers • Telecom Equipment • Notebook Computers • Power Management • Battery Chargers • Automotive • Power Supplies • Test Equipment 3 Description The INA220 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface.
The INA220 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 I2C- or SMBUS-compatible interface features 16 programmable addresses.
The separate shunt input on the INA220 allows it to be used in systems with low-side sensing.
The INA220 is available in two grades: A and B.
The B grade version has higher accuracy and higher precision specifications.
The INA220 senses across shunts on buses that can vary from 0 to 26 V, useful for low-side sensing or CPU power supplies.
The device uses a single 3- to 5.
5-V supply, drawing a maximum of 1 mA of supply current.
The INA220 operates from –40°C to 125°C.
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) INA220 VSSOP (10) 3.
00 mm × 3.
00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet.
Supply (0 to 26V) General Load, Low- or High-Side Sensing CBYPASS 0.
1µF +3.
3V to +5V HighSide Shunt Load LowSide Shunt Bus Voltage Input R2F R1F CF VIN+ V I VIN- GND ADC × Power Register Current Register Voltage Register VS (Sup...


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