INA223

更新时间： 2024-09-25 11:58:03

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
31页	1263K
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Analog Output Current Shunt and Voltage Instantaneous Power Monitor

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INA223 数据手册

INA223

www.ti.com

SBOS528 –JUNE 2012

Analog Output Current Shunt and Voltage

Instantaneous Power Monitor

Check for Samples: INA223

FEATURES

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.

•

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)

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.

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)

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.

APPLICATIONS

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.

•

Notebook Computers

Cell Phones

Telecom Equipment

Power Management

C_BYPASS

R_SHUNT

0.1mF

Power Supply

(0V to 26V)

Load

V_S(Supply Voltage)

Attenuator

R_PULLUP

4.7kW

V_IN-

V_OUT

SCL

V_IN+

SDA

Two-Wire

Interface

INA223

GND

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.

All other trademarks are the property of their respective owners.

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.

12 3 4 5 6 7...31

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与INA223相关器件

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INA223AIDSKR	TI	获取价格	Analog Output Current Shunt and Voltage Instantaneous Power Monitor
INA223AIDSKT	TI	获取价格	Analog Output Current Shunt and Voltage Instantaneous Power Monitor
INA223EVM	TI	获取价格	INA223EVM Userâs Guide and Software Tutoria
INA225	TI	获取价格	36-V, Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift Series,Current-Shunt Mo
INA225_15	TI	获取价格	36-V, Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift Series,Current-Shunt Mo
INA225AIDGK	TI	获取价格	36-V, Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift Series,Current-Shunt Mo
INA225AIDGKR	TI	获取价格	36-V, Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift Series,Current-Shunt Mo
INA225AIDGKT	TI	获取价格	36-V, Programmable-Gain, Voltage-Output, Bidirectional, Zero-Drift Series,Current-Shunt Mo
INA225AQDGKRQ1	TI	获取价格	具有四个引脚可选增益设置的 AEC-Q100、36V 双向电流感应放大器 \| DGK \|
INA225-Q1	TI	获取价格	具有四个引脚可选增益设置的 AEC-Q100、36V 双向电流感应放大器

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