´

Power Register

Current Register

I C-/SMBUS-

Compatible

Interface

2

Voltage Register

V

V

S

(Supply Voltage)

A0

A1

Data

CLK

ADC

PGA

INA219

GND

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INA219

SBOS448G – AUGUST 2008 – REVISED DECEMBER 2015

1 Features

3 Description

The INA219 is a current shunt and power monitor

1

•

Senses Bus Voltages from 0 to 26 V

•

Reports Current, Voltage, and Power

device monitors both shunt voltage drop and bus

•

16 Programmable Addresses

supply voltage, with programmable conversion times

and filtering. A programmable calibration value,

•

High Accuracy: 0.5% (Maximum) Over

combined with an internal multiplier, enables direct

Temperature (INA219B)

readouts

of

current

in

amperes.

An

additional

•

Filtering Options

multiplying register calculates power in watts. The

•

Calibration Registers

programmable addresses.

•

SOT23-8 and SOIC-8 Packages

The INA219 is available in two grades: A and B. The

2 Applications

B grade version has higher accuracy and higher

precision specifications.

•

Servers

•

Telecom Equipment

The INA219 senses across shunts on buses that can

vary from 0 to 26 V. The device uses a single 3- to

•

Notebook Computers

5.5-V supply, drawing a maximum of 1 mA of supply

•

Power Management

current. The INA219 operates from –40°C to 125°C.

•

Battery Chargers

Device Information(1)

•

Welding Equipment

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Power Supplies

SOIC (8)

3.91 mm × 4.90 mm

•

Test Equipment

INA219

SOT-23 (8)

1.63 mm × 2.90 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

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. PRODUCTION DATA.