INA209

AKTIV

Überwachungsmodul für Strom/Spannung/Leistung, 26 V, 12 Bit, I2C-Ausgang, mit Analog-Komparator

Produktdetails

Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Iq (max) (mA) 1.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 1 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Iq (max) (mA) 1.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 1 Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • SENSES BUS VOLTAGES FROM 0V TO +26V
  • REPORTS CURRENT, VOLTAGE, AND POWER; STORES PEAKS
  • TRIPLE WATCHDOG LIMITS:
    • Lower Warning with Delay
    • Upper Over-limit, No Delay
    • Fast Analog Critical
  • HIGH ACCURACY: 1% MAX OVER TEMP
  • APPLICATIONS
    • SERVERS
    • TELECOM EQUIPMENT
    • AUTOMOTIVE
    • POWER MANAGEMENT
    • BATTERY CHARGERS
    • WELDING EQUIPMENT
    • POWER SUPPLIES
    • TEST EQUIPMENT

I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

  • SENSES BUS VOLTAGES FROM 0V TO +26V
  • REPORTS CURRENT, VOLTAGE, AND POWER; STORES PEAKS
  • TRIPLE WATCHDOG LIMITS:
    • Lower Warning with Delay
    • Upper Over-limit, No Delay
    • Fast Analog Critical
  • HIGH ACCURACY: 1% MAX OVER TEMP
  • APPLICATIONS
    • SERVERS
    • TELECOM EQUIPMENT
    • AUTOMOTIVE
    • POWER MANAGEMENT
    • BATTERY CHARGERS
    • WELDING EQUIPMENT
    • POWER SUPPLIES
    • TEST EQUIPMENT

I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

The INA209 is a high-side current shunt and power monitor with an I2C interface. The INA209 monitors both shunt drop and shunt bus voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The INA209 features two separate, onboard watchdog capabilities: a warning comparator and an over-limit comparator. The warning comparator is useful for monitoring lower warning limits and incorporates a user-defined delay. The over-limit comparator assists with monitoring upper limits that could require immediate system shutdown.

The INA209 also includes an analog comparator and a programmable digital-to-analog converter (DAC) that combine to provide the fastest possible responses to current overload conditions.

The INA209 can be used together with hot swap controllers that already use a current sense resistor. The INA209 full-scale range can be selected to be either within the hot-swap controller sense limits, or wide enough to include them.

The INA209 senses across shunts on buses that can vary from 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1.5mA of supply current. It is specified for operation from -25°C to +85°C.

The INA209 is a high-side current shunt and power monitor with an I2C interface. The INA209 monitors both shunt drop and shunt bus voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The INA209 features two separate, onboard watchdog capabilities: a warning comparator and an over-limit comparator. The warning comparator is useful for monitoring lower warning limits and incorporates a user-defined delay. The over-limit comparator assists with monitoring upper limits that could require immediate system shutdown.

The INA209 also includes an analog comparator and a programmable digital-to-analog converter (DAC) that combine to provide the fastest possible responses to current overload conditions.

The INA209 can be used together with hot swap controllers that already use a current sense resistor. The INA209 full-scale range can be selected to be either within the hot-swap controller sense limits, or wide enough to include them.

The INA209 senses across shunts on buses that can vary from 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1.5mA of supply current. It is specified for operation from -25°C to +85°C.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt High-Side Measurement, Bi-Directional Current/Power Monitor with I2C Interface datasheet (Rev. B) 27.03.2009
Anwendungshinweis Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) PDF | HTML 27.04.2026
Anwendungshinweis Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18.11.2024
Application brief Measuring Current for Handle Multiple Out-of-Range Conditions (Rev. C) PDF | HTML 04.10.2021
Anwendungshinweis Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 30.09.2021
Application brief Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) PDF | HTML 28.09.2021
Anwendungshinweis Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 02.09.2021
Anwendungshinweis Understanding the I2C Bus PDF | HTML 30.06.2015
Benutzerhandbuch USB DIG Platform User's Guide (Rev. A) 14.02.2010
Weitere Dokumente INA209EVM Quick-Start Guide (Video) (Rev. A) 17.04.2008

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Codebeispiel oder Demo

SBOC251 — INA209EVM Source Code

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Treiber oder Bibliothek

INA209SW-LINUX — Linux-Treiber für INA209

The Linux driver supports the INA209 Current/Power Monitor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • ina209
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