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INA300

ACTIVO

Comparador de detección de corriente de 36 V

Detalles del producto

Product type Analog output with integrated comparator Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 650 Input offset drift (±) (typ) (µV/°C) 0.1 Features Alert Function, Low-side Capable Rating Catalog CMRR (min) (dB) 100 Iq (max) (mA) 0.15 Number of channels 1 Comparators (#) 1 Operating temperature range (°C) -40 to 125
Product type Analog output with integrated comparator Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 650 Input offset drift (±) (typ) (µV/°C) 0.1 Features Alert Function, Low-side Capable Rating Catalog CMRR (min) (dB) 100 Iq (max) (mA) 0.15 Number of channels 1 Comparators (#) 1 Operating temperature range (°C) -40 to 125
VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm) WSON (DSQ) 10 4 mm² (2 mm × 2 mm)
  • Wide Common-Mode Range: 0 V to 36 V
  • Selectable Response Times:
    • 10 µs, 50 µs, 100 µs
  • Programmable Threshold:
    • Adjust Using Single Resistor
    • Programmable From 0 mV to 250 mV
  • Accuracy:
    • Offset Voltage: ±500 µV (Maximum)
    • Offset Voltage Drift: 0.5 µV/°C (Maximum)
  • Selectable Hysteresis:
    • 2 mV, 4 mV, 8 mV
  • Active Quiescent Current: 135 µA (Maximum)
  • Selectable Disable Mode
    • Disabled Quiescent Current: 3.5 µA (Maximum)
    • Disabled Input Bias Current: 500 nA (Maximum)
  • Open-Drain Output With Latch Mode Available
  • Wide Common-Mode Range: 0 V to 36 V
  • Selectable Response Times:
    • 10 µs, 50 µs, 100 µs
  • Programmable Threshold:
    • Adjust Using Single Resistor
    • Programmable From 0 mV to 250 mV
  • Accuracy:
    • Offset Voltage: ±500 µV (Maximum)
    • Offset Voltage Drift: 0.5 µV/°C (Maximum)
  • Selectable Hysteresis:
    • 2 mV, 4 mV, 8 mV
  • Active Quiescent Current: 135 µA (Maximum)
  • Selectable Disable Mode
    • Disabled Quiescent Current: 3.5 µA (Maximum)
    • Disabled Input Bias Current: 500 nA (Maximum)
  • Open-Drain Output With Latch Mode Available

Designed for overcurrent protection applications, the INA300 is a current-sensing comparator that detects overcurrent by measuring the voltage developed across a shunt resistor, and comparing that voltage to the threshold voltage input level. The device measures this differential voltage signal on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage. The INA300 device features an adjustable threshold range that is set using a single external limit-setting resistor. A selectable hysteresis feature enables adjustable operation of the comparator to accommodate the wide input signal range of 0 mV to 250 mV.

An open-drain alert output on the device can be configured to operate in either a transparent mode where the output status follows the input state, or in a latched mode where the alert output is cleared when the latch is cleared. The device response time setting is selectable, which enables overcurrent alerts to be issued in as fast as 10 µs.

The INA300 device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 135 µA. The INA300 device is specified over the extended operating temperature range of –40°C to +125°C, and is available in WSON-10 and VSSOP-10 packages.

Designed for overcurrent protection applications, the INA300 is a current-sensing comparator that detects overcurrent by measuring the voltage developed across a shunt resistor, and comparing that voltage to the threshold voltage input level. The device measures this differential voltage signal on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage. The INA300 device features an adjustable threshold range that is set using a single external limit-setting resistor. A selectable hysteresis feature enables adjustable operation of the comparator to accommodate the wide input signal range of 0 mV to 250 mV.

An open-drain alert output on the device can be configured to operate in either a transparent mode where the output status follows the input state, or in a latched mode where the alert output is cleared when the latch is cleared. The device response time setting is selectable, which enables overcurrent alerts to be issued in as fast as 10 µs.

The INA300 device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 135 µA. The INA300 device is specified over the extended operating temperature range of –40°C to +125°C, and is available in WSON-10 and VSSOP-10 packages.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos INA300 Overcurrent-Protection, Current-Sense Comparator datasheet (Rev. C) PDF | HTML 18/06/2021
Nota sobre la aplicación Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) PDF | HTML 27/04/2026
Nota sobre la aplicación Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18/11/2024
Libro electrónico An Engineer's Guide to Current Sensing (Rev. B) 12/04/2022
Application brief Measuring Current To Detect Out-of-Range Conditions (Rev. D) PDF | HTML 10/03/2022
Application brief Measuring Current for Handle Multiple Out-of-Range Conditions (Rev. C) PDF | HTML 4/10/2021
Guía de selección Current Sense Amplifiers (Rev. E) 20/09/2021
Application brief Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D) 6/03/2019
Circuit design Overcurrent event detection circuit 31/07/2018
Application brief Low-Drift, Low-Side Current Measurements for Three-Phase Systems (Rev. B) 5/09/2017
Informe Overcurrent protection enables more efficient and reliable systems 16/05/2016
Artículo técnico How to get started with current sense amplifiers – part 3 PDF | HTML 9/07/2015
Artículo técnico What are you sensing? Re-thinking system efficiency and reliability - part 1 PDF | HTML 27/05/2015
Artículo técnico How to get started with current sense amplifiers – part 2 PDF | HTML 26/05/2015
Más documentación Over-Current Detection Products Brochure 14/08/2014

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

INA300EVM — Módulo de evaluación de INA300

The INA300 is a high common-mode, precision, bidirectional, current-sensing comparator that can be configured to detect over current conditions through the voltage developed across a shunt resistor.  Operating from a single power supply from 2.7 V to 5.5 V, the INA300 can be configured to (...)

Guía del usuario: PDF
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Modelo de simulación

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SBOM880A.TSC (1606 KB) - Diseño de referencia TINA-TI
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SBOM879A.ZIP (9 KB) - Modelo TINA-TI Spice
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TIDA-00302 — Diseño de referencia del monitor de derivación de corriente con solidez transitoria

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
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