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INA226

更新时间： 2024-11-13 11:08:27
品牌 Logo 应用领域
德州仪器 - TI 监控监视器
页数 文件大小 规格书
30页 445K
描述
High-or Low-Side Measurement, Bi-Directional CURRENT/POWER MONITOR with I2C Interface

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INA226 数据手册

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INA226  
www.ti.com  
SBOS547 –JUNE 2011  
High-or Low-Side Measurement,  
Bi-Directional CURRENT/POWER MONITOR with I2C™ Interface  
Check for Samples: INA226  
1
FEATURES  
DESCRIPTION  
The INA226 is a current shunt and power monitor  
with an I2C interface. The INA226 monitors both a  
shunt voltage drop and bus supply voltage.  
Programmable calibration value, conversion times,  
and averaging, combined with an internal multiplier,  
enable direct readouts of current in amperes and  
power in watts.  
23  
•
SENSES BUS VOLTAGES FROM 0V TO +36V  
HIGH- OR LOW-SIDE SENSING  
REPORTS CURRENT, VOLTAGE, AND POWER  
HIGH ACCURACY:  
•
•
•
–
–
0.1% Gain Error (Max)  
10μV Offset (Max)  
•
•
•
•
CONFIGURABLE AVERAGING OPTIONS  
16 PROGRAMMABLE ADDRESSES  
OPERATES FROM 2.7 to 5.5V POWER SUPPLY  
MSOP-10 PACKAGE  
The INA226 senses current on buses that can vary  
from 0V to +36V, while the device obtains its power  
from a single +2.7V to +5.5V supply, drawing a  
typical of 330μA of supply current. The INA226 is  
specified over the operating temperature range  
of –40°C to +125°C. The I2C interface features 16  
programmable addresses.  
APPLICATIONS  
•
•
•
•
•
•
•
SERVERS  
TELECOM EQUIPMENT  
COMPUTERS  
POWER MANAGEMENT  
BATTERY CHARGERS  
POWER SUPPLIES  
TEST EQUIPMENT  
RELATED PRODUCTS  
DESCRIPTION  
DEVICE  
Current/Power Monitor with Watchdog, Peak-Hold,  
and Fast Comparator Functions  
INA209  
INA210, INA211,  
INA212, INA213,  
INA214  
Zerø-Drift, Low-Cost, Analog Current Shunt Monitor  
Series in Small Package  
Zerø-Drift, Bi-Directional Current Power Monitor with  
INA219  
INA220  
Two-Wire Interface  
High or Low Side, Bi-Directional Current/Power  
Monitor with Two-Wire Interface  
Power Supply  
(0V to 36V)  
CBYPASS  
0.1mF  
VS  
VBUS  
High-  
Side  
Shunt  
(Supply Voltage)  
INA226  
SDA  
SCL  
Power Register  
´
Load  
V
I
I2C  
Interface  
Current Register  
ADC  
Low-  
Side  
Shunt  
Alert  
Voltage Register  
A0  
A1  
Alert Register  
GND  
High-or Low-Side Sensing  
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.  
2
3
I2C is a trademark of NXP Semiconductors.  
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.  
Copyright © 2011, Texas Instruments Incorporated  
 
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