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INA3221AQRGVRQ1 +BOM

AEC-Q100, 26V, triple channel, 13-bit, i2c output current/voltage monitor w/alerts

INA3221AQRGVRQ1 Information

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INA3221AQRGVRQ1

Description

The Texas Instruments INA3221AQRGVRQ1 is a high-accuracy, low-power current shunt monitor IC designed for automotive and industrial applications. It measures bus voltages from 0V to 26V and reports both shunt and bus voltage with high accuracy. The device features AEC-Q100 qualification for automotive use, functional safety capabilities, and programmable addresses and alert outputs. Its small VQFN package and low power consumption make it suitable for space-constrained applications. The INA3221AQRGVRQ1 is commonly used in power management systems, industrial automation, battery management systems, and power distribution systems to measure multiple channels with high accuracy and low power consumption.

Features

The INA3221AQRGVRQ1 features include:

  • Qualified for automotive applications (AEC-Q100)
  • Functional Safety-Capable with documentation available
  • Senses bus voltages from 0V to 26V
  • Reports shunt and bus voltage
  • High accuracy: ±80µV offset voltage, 0.25% gain error
  • Configurable averaging options
  • Four programmable addresses
  • Programmable alert and warning outputs
  • Power-supply operation: 2.7V to 5.5V

These features make it suitable for use in automotive systems, industrial automation, battery management systems, and power distribution systems that require high accuracy and low power consumption.

Package

The package type of INA3221AQRGVRQ1 is VQFN EP-16.

Pinout

The INA3221AQRGVRQ1 has a pin count of 16.

Here's a concise overview of its pins:

  • VCC: Power supply input (2.7V to 5.5V)
  • GND: Ground
  • SDA: I2C data line
  • SCL: I2C clock line
  • SHDN: Shutdown pin (active-high)
  • ALERT: Alert output (open-drain)
  • VBUS: Bus voltage input (0V to 26V)
  • SHUNT: Shunt current input (0A to 16A)

The INA3221AQRGVRQ1 is a high-accuracy, low-power current shunt monitor with I2C interface. It measures bus voltages and shunt currents, providing accurate readings for power management applications.

Manufacturer

The manufacturer of the INA3221AQRGVRQ1 is Texas Instruments (TI), a leading semiconductor company that designs, manufactures, and tests semiconductors and related technologies. TI is a global technology leader in developing innovative products and solutions for various industries, including automotive, industrial, medical, and consumer electronics.

Applications

According to the product information, the application areas of INA3221AQRGVRQ1 are:

  • Automotive systems for monitoring voltage and current in power management applications
  • Industrial automation
  • Battery management systems
  • Power distribution systems

These applications utilize the device's high accuracy, low power consumption, and configurable features.

Equivalent

Based on TI's product offerings and market trends, some equivalent products to the INA3221AQRGVRQ1 are:

  • Texas Instruments' own INA219, which is a more general-purpose current shunt monitor
  • Maxim Integrated's MAX1702, which also measures current and voltage with high accuracy
  • Analog Devices' AD conversions of i2c current sensors, such as the ADXL100, which offers similar features

Please note that these products might have slightly different specifications or use cases.

INA3221AQRGVRQ1

Specifications

Category Integrated Circuits (ICs)Power Management (PMIC)Current Regulation/Management Function Current/Voltage Monitor
Sensing Method High/Low-Side Accuracy ±0.25%
Voltage - Input 0V ~ 26V Current - Output -
Operating Temperature -40°C ~ 125°C Mounting Type Surface Mount
Base Product Number INA3221 Common-mode voltage (max) (V) 26
Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 80
Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1
Voltage gain (V/V) 1 CMRR (min) (dB) 110
Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7
Iq (max) (mA) 0.35 Digital interface I2C, SMBus
Gain error (%) 0.25 Gain error drift (±) (max) (ppm/°C) 50
Features Alert Function, Bi-directional, Bidirectional, Low-side Capable Number of channels 3
Resolution (Bits) 13 Power measurement accuracy (%) 0.5
TI functional safety category Functional Safety-Capable Rating Automotive
Operating temperature range (°C) -40 to 125 Package/Case VQFN-16

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