Datasheet > INA149AIDR

INA149AIDR

更新时间： 2024-11-03 11:08:27

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
24页	1786K
描述
High Common-Mode Voltage Difference Amplifier

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INA149AIDR 数据手册

INA149

www.ti.com

SBOS579A –SEPTEMBER 2011–REVISED NOVEMBER 2011

High Common-Mode Voltage Difference Amplifier

FEATURES

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.

•

Common-Mode Voltage Range: ±275 V

Minimum CMRR: 90 dB from –40°C to +125°C

DC Specifications:

–

Maximum Offset Voltage: 1100 μV

Maximum Offset Voltage Drift: 15 μV/°C

Maximum Gain Error: 0.02%

Maximum Gain Error Drift: 10 ppm/°C

Maximum Gain Nonlinearity: 0.001% FSR

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.

•

AC Performance:

–

Bandwidth: 500 kHz

Typical Slew Rate: 5 V/μs

Wide Supply Range: ±2.0 V to ±18 V

–

Maximum Quiescent Current: 900 μA

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 extended industrial

temperature range of –40°C to +125°C.

Output Swing on ±15-V Supplies: ±13.5 V

Input Protection:

–

Common-Mode: ±500 V

Differential: ±500 V

APPLICATIONS

120

INA149

•

High-Voltage Current Sensing

Battery Cell Voltage Monitoring

Power-Supply Current Monitoring

Motor Controls

110

100

Competitor A

Replacement for Isolation Circuits

100

10k

100k

Frequency (Hz)

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.

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.

12 3 4 5 6 7...24

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INA149AIDR 替代型号

型号	品牌	替代类型	描述	数据表
INA149AMDREP	TI	类似代替	HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER
INA149AID	TI	类似代替	High Common-Mode Voltage Difference Amplifier

与INA149AIDR相关器件

型号	品牌	获取价格	描述	数据表
INA149AMDREP	TI	获取价格	HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER
INA149-EP	TI	获取价格	HIGH COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER
INA152	BB	获取价格	Single-Supply DIFFERENCE AMPLIFIER
INA152	TI	获取价格	Single-Supply DIFFERENCE AMPLIFIER
INA152EA	BB	获取价格	Single-Supply DIFFERENCE AMPLIFIER
INA152EA/250	TI	获取价格	Single-Supply DIFFERENCE AMPLIFIER
INA152EA/250G4	TI	获取价格	Single-Supply Difference Amplifier 8-VSSOP -40 to 85
INA152EA/2K5	TI	获取价格	Single-Supply DIFFERENCE AMPLIFIER
INA152EA/2K5G4	TI	获取价格	OP-AMP, 1500uV OFFSET-MAX, PDSO8, GREEN, MSOP-8
INA152EA250	BB	获取价格	Single-Supply DIFFERENCE AMPLIFIER

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