Datasheet > INA2290A3IDGKT

INA2290A3IDGKT

更新时间： 2024-09-26 02:48:43

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
32页	1965K
描述
INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier

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INA2290A3IDGKT 数据手册

INA290, INA2290

www.ti.com

SBOS961B – JUNE 2020 – REVISED DECEMBER 2020

INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier

1 Features

3 Description

•

Wide common-mode voltage:

– Operational voltage: 2.7 V to 120 V

– Survival voltage: −20 V to +122 V

Excellent CMRR:

– 160-dB DC

– 85-dB AC at 50 kHz

Accuracy

The INAx290 is an ultra-precise current sense

amplifier that can measure voltage drops across shunt

resistors over a wide common-mode range from 2.7 V

to 120 V. The ultra-precise current measurement

accuracy is achieved thanks to the combination of an

ultra-low offset voltage of ±12 µV (maximum), a small

gain error of ±0.1% (maximum), and a high DC CMRR

of 160 dB (typical). The INAx290 is not only designed

for DC current measurement, but also for high-speed

applications (like fast overcurrent protection, for

example) with a high bandwidth of 1.1 MHz (at gain of

20 V/V) and an 85-dB AC CMRR (at 50 kHz).

– Gain:

•

Gain error: ±0.1% (maximum)

Gain drift: ±5 ppm/°C (maximum)

– Offset:

•

Offset voltage: ±12 µV (maximum)

Offset drift: ±0.2 µV/°C (maximum)

The INAx290 provides the capability to make ultra-

precise current measurements by sensing the voltage

drop across a shunt resistor over a wide common-

mode range from 2.7 V to 120 V. The INAx290

devices come in highly space-efficient packages. The

single channel INA290 device is featured in the SC-70

package while the dual channel INA2290 device is

available in the VSSOP-8 package.

•

Available gains:

– A1 devices: 20 V/V

– A2 devices: 50 V/V

– A3 devices: 100 V/V

– A4 devices: 200 V/V

– A5 devices: 500 V/V

High bandwidth: 1.1 MHz

Slew rate: 2 V/µs

The INAx290 operates from a single 2.7-V to 20-V

supply with the single channel device only drawing

370-µA supply current per channel (typical). The

devices are available with five gain options: 20 V/V,

50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset

of the zero-drift architecture enables current sensing

with low ohmic shunts as specified over the extended

operating temperature range (−40 °C to +125 °C).

•

Quiescent current: 370 µA(per channel)

2 Applications

•

Active antenna system mMIMO (AAS)

Macro remote radio unit (RRU)

48-V rack server

48-V merchant network & server power supply

Test and measurement

Device Information

PART NUMBER

INA290

INA2290

PACKAGE⁽¹⁾

BODY SIZE (NOM)

2.00 mm × 1.25 mm

3.00 mm × 3.00 mm

SC-70 (5)

VSSOP (8)

V_S

V_CM

INA2290 (dual channel)

INA290 (single channel)

(1) For all available packages, see the package option

addendum at the end of the data sheet.

I_SENSE

IN+

Current

Feedback

R_SENSE

Bias

OUT

INœ

Buffer

SAR

ADC

Load

GND

Typical Application

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product Folder Links: INA290 INA2290

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与INA2290A3IDGKT相关器件

型号	品牌	获取价格	描述	数据表
INA2290A4IDGKR	TI	获取价格	INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier
INA2290A4IDGKT	TI	获取价格	INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier
INA2290A5IDGKR	TI	获取价格	INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier
INA2290A5IDGKT	TI	获取价格	INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier
INA229AIDGSR	TI	获取价格	INA229 85-V, 20-Bit, Ultra-Precise Power/Energy/Charge Monitor With SPI Interface
INA229AIDGST	TI	获取价格	INA229 85-V, 20-Bit, Ultra-Precise Power/Energy/Charge Monitor With SPI Interface
INA229AQDGSRQ1	TI	获取价格	INA229-Q1 AEC-Q100, 85-V, 20-Bit, Ultra-Precise Power/Energy/Charge Monitor With SPI Inter
INA229-Q1	TI	获取价格	INA229-Q1 AEC-Q100, 85-V, 20-Bit, Ultra-Precise Power/Energy/Charge Monitor With SPI Inter
INA229-Q1_V01	TI	获取价格	INA229-Q1 AEC-Q100, 85-V, 20-Bit, Ultra-Precise Power/Energy/Charge Monitor With SPI Inter
INA230	TI	获取价格	High- or Low-Side Measurement

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