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INA280-Q1

ACTIVE

AEC-Q100, 2.7-V to 120-V, 1.1-Mhz current sense amplifier in small (SC-70) package

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Data sheet

INA280-Q1

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) 150 Input offset drift (±) (typ) (µV/°C) 1 Features High precision Rating Automotive Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 120 Bandwidth (kHz) 800, 850, 900, 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.6 Number of channels 1 Comparators (#) 0 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 20 Slew rate (V/µs) 2 TI functional safety category Functional Safety-Capable 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) 150 Input offset drift (±) (typ) (µV/°C) 1 Features High precision Rating Automotive Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 120 Bandwidth (kHz) 800, 850, 900, 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.6 Number of channels 1 Comparators (#) 0 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 20 Slew rate (V/µs) 2 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: 2.7 V to 120 V
    • Survival voltage: −20 V to +122 V
  • Excellent CMRR:
    • 120-dB DC (minimum)
    • 85-dB AC at 50 kHz
  • Accuracy
    • Gain:
      • Gain error: ±0.5% (maximum)
      • Gain drift: ±20 ppm/°C (maximum)
    • Offset:
      • Offset voltage: ±150 µV (maximum)
      • Offset drift: ±1 µV/°C (maximum)
  • Available gains:
    • INA280A1-Q1: 20 V/V
    • INA280A2-Q1: 50 V/V
    • INA280A3-Q1: 100 V/V
    • INA280A4-Q1: 200 V/V
    • INA280A5-Q1: 500 V/V
  • High bandwidth: 1.1 MHz
  • Slew rate: 2 V/µs
  • Quiescent current: 370 µA
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: 2.7 V to 120 V
    • Survival voltage: −20 V to +122 V
  • Excellent CMRR:
    • 120-dB DC (minimum)
    • 85-dB AC at 50 kHz
  • Accuracy
    • Gain:
      • Gain error: ±0.5% (maximum)
      • Gain drift: ±20 ppm/°C (maximum)
    • Offset:
      • Offset voltage: ±150 µV (maximum)
      • Offset drift: ±1 µV/°C (maximum)
  • Available gains:
    • INA280A1-Q1: 20 V/V
    • INA280A2-Q1: 50 V/V
    • INA280A3-Q1: 100 V/V
    • INA280A4-Q1: 200 V/V
    • INA280A5-Q1: 500 V/V
  • High bandwidth: 1.1 MHz
  • Slew rate: 2 V/µs
  • Quiescent current: 370 µA

The INA280-Q1 is a current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.0 mm × 2.1 mm. The current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±150 µV (maximum), a small gain error of ±0.5% (maximum), and a high DC CMRR of 140 dB (typical). The INA280-Q1 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).

The INA280-Q1 operates from a single 2.7-V to 20-V supply and draws a 370-µA supply current (typical). The INA280-Q1 available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset and drift of the INA280-Q1 enables accurate current sensing over the extended operating temperature range of −40 °C to +125 °C.

The INA280-Q1 is a current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.0 mm × 2.1 mm. The current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±150 µV (maximum), a small gain error of ±0.5% (maximum), and a high DC CMRR of 140 dB (typical). The INA280-Q1 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).

The INA280-Q1 operates from a single 2.7-V to 20-V supply and draws a 370-µA supply current (typical). The INA280-Q1 available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset and drift of the INA280-Q1 enables accurate current sensing over the extended operating temperature range of −40 °C to +125 °C.
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Technical documentation

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* Data sheet INA280-Q1AEC-Q100, 2.7-V to 120-V, 1.1-MHz, High Precision Current Sense Amplifier in Small (SC-70) Package datasheet PDF | HTML 20 Nov 2020
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 07 Apr 2023
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Application brief High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) PDF | HTML 23 Feb 2021
Functional safety information INA2x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 17 Nov 2020

Design & development

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Evaluation board

INA280EVM — INA280 current sensing evaluation module

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Calculation tool

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Calculation tool

CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

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