INA223 Monitor Datasheet

INA223 Datasheet, PDF, Equivalent


Part Number

INA223

Description

Analog Output Current Shunt and Voltage Instantaneous Power Monitor

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download INA223 Datasheet


INA223
INA223
www.ti.com
SBOS528 – JUNE 2012
Analog Output Current Shunt and Voltage
Instantaneous Power Monitor
Check for Samples: INA223
FEATURES
1
23 Wide Common-Mode Range: 0 V to 26 V
• ±100 µV Offset (Max, Gain = 300 V/V)
• Accuracy
– ±0.25% Shunt Voltage Gain Error (Max)
– ±0.15% Bus Voltage Gain Error (Max)
– 1.25% Power Error (Max)
– 0.3 μV/°C Offset Drift (Max)
– 50 ppm/°C Gain Drift (Max)
• Programmable Gains
– Current Shunt Voltage Gains: 20, 128, 300
– Bus Voltage Attenuations: 1/10, 1/5, 2/5
• Monitors/Measures/Reports:
– Instantaneous Power
– Bus Voltage
– Load Current
• Quiescent Current: 250 µA (Max)
• Shutdown Current: 1 µA (Max)
APPLICATIONS
• Notebook Computers
• Cell Phones
• Telecom Equipment
• Power Management
DESCRIPTION
The INA223 is a voltage-output device that monitors
the current, bus voltage, and power of a supply line
by sensing a voltage drop across a shunt at common-
mode voltages from 0 V to 26 V. The common-mode
voltage range is independent of the supply voltage.
The low offset of the Zerø-Drift architecture enables
current sensing with maximum drops across the
shunt as low as 10 mV, full-scale.
The INA223 includes a two-wire interface used for
adjusting the configuration settings of the device. The
interface is used to control the signal (current shunt
voltage, bus voltage, or power) that is directed to the
device output. Multiple gain and attenuation settings
can be programmed through the two-wire interface to
allow for application-specific configurations. The
programmable gain feature also allows the device to
be operated over a much wider dynamic current load
range without having to switch the sensing element
used.
A shutdown feature is available to disable the device
and effectively disconnect it from the shunt resistor
and supply voltage, thus reducing the drain on the
battery.
The INA223 operates from a single +2.7-V to +5.5-V
supply, drawing a maximum supply current of 250 µA.
It is specified over the extended temperature range of
–40°C to +105°C, and is offered in an SON-10
package.
Power Supply
(0V to 26V)
RSHUNT
Load
CBYPASS
0.1mF
VS (Supply Voltage)
Attenuator
VIN-
VOUT
RPULLUP
4.7kW
SCL
VIN+
Two-Wire
SDA
Interface
A0
INA223
GND
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.
TransZorb is a trademark of General Instruments, Inc.
2
All other trademarks are the property of their respective owners.
3
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

INA223
INA223
SBOS528 – JUNE 2012
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PRODUCT
INA223
PACKAGE INFORMATION(1)
PACKAGE-LEAD
PACKAGE
DESIGNATOR
SON-10
DSK
PACKAGE
MARKING
P223
(1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet, or visit
the device product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating free-air temperature range, unless otherwise noted.
Supply voltage
Analog inputs,
VIN+, VIN(2)
Differential (VIN+) – (VIN–)
Common-mode (3)
Input current into any pin(3)
Operating temperature
Storage temperature
Junction temperature
Electrostatic
discharge
(ESD)ratings
Human body model (HBM)
Charged-device model (CDM)
Machine model (MM)
INA223
+6
–26 to +26
(GND – 0.3) to +26
5
–55 to +150
–65 to +150
+150
2500
1000
200
UNIT
V
V
V
mA
°C
°C
°C
V
V
V
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) VIN+ and VIN– are the voltages at the +IN and –IN pins, respectively.
(3) Input voltage at any pin may exceed the voltage shown if the current at that pin is limited to 5 mA.
2 Submit Documentation Feedback
Product Folder Link(s): INA223
Copyright © 2012, Texas Instruments Incorporated


Features INA223 www.ti.com SBOS528 – JUNE 201 2 Analog Output Current Shunt and Volt age Instantaneous Power Monitor Check f or Samples: INA223 FEATURES 1 •23 Wi de Common-Mode Range: 0 V to 26 V • 100 µV Offset (Max, Gain = 300 V/V) Accuracy – ±0.25% Shunt Voltage G ain Error (Max) – ±0.15% Bus Voltage Gain Error (Max) – 1.25% Power Error (Max) – 0.3 μV/°C Offset Drift (Ma x) – 50 ppm/°C Gain Drift (Max) • Programmable Gains – Current Shunt Vo ltage Gains: 20, 128, 300 – Bus Volta ge Attenuations: 1/10, 1/5, 2/5 • Mon itors/Measures/Reports: – Instantaneo us Power – Bus Voltage – Load Curre nt • Quiescent Current: 250 µA (Max) • Shutdown Current: 1 µA (Max) APPL ICATIONS • Notebook Computers • Cel l Phones • Telecom Equipment • Powe r Management DESCRIPTION The INA223 is a voltage-output device that monitors the current, bus voltage, and power of a supply line by sensing a voltage drop across a shunt at commonmode voltages from 0 V to 26 V. The common-mode voltage range is independent of the supply .
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