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INA149AMDREP PDF预览

INA149AMDREP

更新时间： 2024-11-21 12:21:35
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德州仪器 - TI 放大器
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26页 1813K
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HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER

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INA149AMDREP 数据手册

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INA149-EP  
www.ti.com  
SBOS608A –MARCH 2012–REVISED APRIL 2012  
HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER  
1
FEATURES  
2
•
•
•
Common-Mode Voltage Range: ±275 V  
Minimum CMRR: 84 dB from –55°C to +125°C  
DC Specifications:  
SUPPORTS DEFENSE, AEROSPACE,  
AND MEDICAL APPLICATIONS  
•
•
•
•
Controlled Baseline  
One Assembly/Test Site  
One Fabrication Site  
–
–
–
Maximum Offset Voltage: 3500 μV  
Maximum Gain Error: 0.047%  
Available in Military (–55°C/125°C)  
Temperature Range(1)  
Maximum Gain Nonlinearity: 0.001% FSR at  
25°C  
•
•
•
Extended Product Life Cycle  
Extended Product-Change Notification  
Product Traceability  
•
•
•
AC Performance:  
–
–
Bandwidth: 500 kHz  
Typical Slew Rate: 5 V/μs  
Wide Supply Range: ±2.0 V to ±18 V  
120  
INA149  
Competitor A  
–
–
Maximum Quiescent Current: 1100 μA  
110  
100  
90  
Output Swing on ±15-V Supplies: ±13.5 V  
Input Protection:  
–
–
Common-Mode: ±500 V  
Differential: ±500 V  
80  
70  
APPLICATIONS  
60  
•
•
•
•
•
High-Voltage Current Sensing  
Battery Cell Voltage Monitoring  
Power-Supply Current Monitoring  
Motor Controls  
50  
40  
10  
100  
1k  
10k  
100k  
Frequency (Hz)  
Replacement for Isolation Circuits  
(1) Additional temperature ranges available - contact factory  
DESCRIPTION  
The INA149 is a precision unity-gain difference amplifier with a very high input common-mode voltage range. It is  
a single, monolithic device that consists of a precision op amp and an integrated thin-film resistor network. The  
INA149 can accurately measure small differential voltages in the presence of common-mode signals up to  
±275 V. The INA149 inputs are protected from momentary common-mode or differential overloads of up to  
500 V.  
In many applications, where galvanic isolation in not required, the INA149 can replace isolation amplifiers. This  
ability can eliminate costly isolated input side power supplies and the associated ripple, noise, and quiescent  
current. The excellent 0.0005% nonlinearity and 500-kHz bandwidth of the INA149 are superior to those of  
conventional isolation amplifiers.  
The INA149 is pin-compatible with the INA117 and INA148 type high common-mode voltage amplifiers and  
offers improved performance over both devices. The INA149 is available in the SOIC-8 package with operation  
specified over the military temperature range of –55°C to +125°C.  
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
All 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 © 2012, Texas Instruments Incorporated  
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INA149AMDREP 替代型号

型号 品牌 替代类型 描述 数据表
INA149AIDR TI

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