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INA2290

ACTIVE

Dual-channel, 2.7-V to 120-V, 1.1-MHz, ultra-precise current sense amplifier

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Data sheet

INA2290

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 120 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 12, 15, 20, 25 Input offset drift (±) (typ) (µV/°C) 0.2 Voltage gain (V/V) 20, 50, 100, 500 CMRR (min) (dB) 140 Bandwidth (kHz) 800, 850, 900, 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 1.2 Number of channels 2 Comparators (#) 0 Gain error (%) 0.1, 0.15 Gain error drift (±) (max) (ppm/°C) 5 Slew rate (V/µs) 2 Features Dual Channel, Ultra precise Rating Catalog Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 120 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 12, 15, 20, 25 Input offset drift (±) (typ) (µV/°C) 0.2 Voltage gain (V/V) 20, 50, 100, 500 CMRR (min) (dB) 140 Bandwidth (kHz) 800, 850, 900, 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 1.2 Number of channels 2 Comparators (#) 0 Gain error (%) 0.1, 0.15 Gain error drift (±) (max) (ppm/°C) 5 Slew rate (V/µs) 2 Features Dual Channel, Ultra precise Rating Catalog Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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
    • 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)
  • 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)
  • 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
    • 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)
  • 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 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).

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.

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).

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).

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.

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).
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Type Title Date
* Data sheet INAx290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. C) 29 Jun 2021
Application brief Current Sensing Applications in Communication Infrastructure Equipment (Rev. C) PDF | HTML 08 Aug 2023
Application brief Improving Power Amplifier Efficiency With Current Monitors (Rev. B) PDF | HTML 24 Jul 2023
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
EVM User's guide INA2290EVM User's Guide (Rev. A) PDF | HTML 17 Dec 2020
Certificate INA2290EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) 02 Dec 2020
Technical article How current sensors help monitor and protect the world’s wireless infrastructure PDF | HTML 30 Dec 2019

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