Datasheet > INA4290A5IRGVT

INA4290A5IRGVT

更新时间： 2024-11-19 02:48:51

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
37页	2270K
描述
INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise, Current-Sense Amplifier

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INA4290A5IRGVT 数据手册

INA290, INA2290, INA4290

SBOS961C – JUNE 2020 – REVISED JUNE 2021

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 (such as 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, the dual-channel INA2290 device

is available in the MSOP-8 package, and the quad-

channel INA4290 device is available in the 4 mm x 4

mm QFN 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

•

Quiescent current: 370 µA (per channel)

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).

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

V_S

Device Information⁽¹⁾

INA4290 (quad channel)

V_CM

INA2290 (dual channel)

INA290 (single channel)

PART NUMBER

INA290

PACKAGE

BODY SIZE (NOM)

2.00 mm × 1.25 mm

3.00 mm × 3.00 mm

4.00 mm × 4.00 mm

SC-70 (5)

I_SENSE

IN+

INA2290

INA4290

VSSOP (8)

QFN (16)

Current

Feedback

R_SENSE

Bias

OUT

INœ

Buffer

SAR

ADC

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

addendum at the end of the data sheet.

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.

12 3 4 5 6 7...37

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