INA234

ACTIVO

Monitor de corriente, tensión y potencia de salida I2C de 28 V y 12 bits con alerta en WCSP

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Hoja de datos

document-pdfAcrobat INA234 28V , 12-Bit , Current, Voltage, and Power Monitor With an I2 C Interface datasheet (Rev. D) (Inglés) PDF | HTML

INA234

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Common-mode voltage (max) (V)

28

Common-mode voltage (min) (V)

-0.3

Digital interface

I2C

Resolution (Bits)

12

Input offset (±) (max) (µV)

100

Input offset drift (±) (max) (µV/°C)

0.5

Voltage gain (V/V)

1

CMRR (min) (dB)

100

Iq (max) (mA)

0.5

Gain error (%)

0.5

Gain error drift (±) (max) (ppm/°C)

50

Features

Alert Function, Bidirectional, Integrated Power Monitor, Low-side Capable

Number of channels

1

Power measurement accuracy (%)

1

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Common-mode voltage (max) (V)

28

Common-mode voltage (min) (V)

-0.3

Digital interface

I2C

Resolution (Bits)

12

Input offset (±) (max) (µV)

100

Input offset drift (±) (max) (µV/°C)

0.5

Voltage gain (V/V)

1

CMRR (min) (dB)

100

Iq (max) (mA)

0.5

Gain error (%)

0.5

Gain error drift (±) (max) (ppm/°C)

50

Features

Alert Function, Bidirectional, Integrated Power Monitor, Low-side Capable

Number of channels

1

Power measurement accuracy (%)

1

Rating

Catalog

Operating temperature range (°C)

-40 to 125

DSBGA (YBJ)

8

0.2316 mm² (1.2 mm × 0.193 mm)

High-side or low-side current sensing
Operates from a 1.7V to 5.5V power supply
Reports current, voltage and power
Programmable full scale range: 20mV / 80mV
Input common mode range: –0.3V to 28V
Current monitoring accuracy:
- 12-bit ADC resolution
- 0.5% gain error (maximum)
- 100µV offset (maximum)
Low input bias current: 10nA (maximum)
Configurable averaging options
General call addressing allows conversion synchronization among devices
Alert limits for over and under current events
1.2V compliant I2C, SMBus interface
Two device address options with a 4-pin selectable address
DSBGA-8 Package (0.745mm × 1.508mm)
Operating temperature: –40°C and +125°C

High-side or low-side current sensing
Operates from a 1.7V to 5.5V power supply
Reports current, voltage and power
Programmable full scale range: 20mV / 80mV
Input common mode range: –0.3V to 28V
Current monitoring accuracy:
- 12-bit ADC resolution
- 0.5% gain error (maximum)
- 100µV offset (maximum)
Low input bias current: 10nA (maximum)
Configurable averaging options
General call addressing allows conversion synchronization among devices
Alert limits for over and under current events
1.2V compliant I2C, SMBus interface
Two device address options with a 4-pin selectable address
DSBGA-8 Package (0.745mm × 1.508mm)
Operating temperature: –40°C and +125°C

The INA234 device is a 12-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with a wide range of digital bus voltages such as 1.2V, 1.8V, 3.3V, and 5V. The device monitors the voltage across an external sense resistor and reports values for current, bus voltage, and power.

The INA234 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN– pin and can alert on overcurrent and undercurrent conditions as well as overvoltage and undervoltage conditions. High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA234 senses current on common-mode bus voltages that can vary from –0.3V to 28V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 300µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2µA.

The INA234 device is a 12-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with a wide range of digital bus voltages such as 1.2V, 1.8V, 3.3V, and 5V. The device monitors the voltage across an external sense resistor and reports values for current, bus voltage, and power.

The INA234 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN– pin and can alert on overcurrent and undercurrent conditions as well as overvoltage and undervoltage conditions. High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA234 senses current on common-mode bus voltages that can vary from –0.3V to 28V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 300µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2µA.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	INA234 28V , 12-Bit , Current, Voltage, and Power Monitor With an I2 C Interface datasheet (Rev. D)	PDF \| HTML	27/08/2025
	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	Aliasing and Prevention in Some Capacitively Coupled Current Sense Amplifiers	PDF \| HTML	6/11/2025
	Nota sobre la aplicación	Closed Loop Constant Power Drive to Simplify Heater Element Control and Extend Battery Life	PDF \| HTML	29/01/2025
	Nota sobre la aplicación	Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers	PDF \| HTML	18/11/2024
	Nota sobre la aplicación	Digital Interfaces for Current Sensing Devices (Rev. A)	PDF \| HTML	30/09/2021
	Application brief	Integrating the Current Sensing Signal Path (Rev. B)	PDF \| HTML	29/09/2021
	Application brief	Integrated, Current Sensing Analog-to-Digital Converter (Rev. A)	PDF \| HTML	28/09/2021
	Nota sobre la aplicación	Getting Started with Digital Power Monitors (Rev. A)	PDF \| HTML	2/09/2021
	Nota sobre la aplicación	Understanding the I2C Bus	PDF \| HTML	30/06/2015

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

INA234_236EVM — Módulo de evaluación INA232, INA234 e INA236 para monitores de corriente/tensión/potencia.

Este módulo de evaluación (EVM) es una plataforma fácil de usar para evaluar las funciones principales y el rendimiento de INA232, INA234 o INA236. El EVM dispone de una interfaz gráfica de usuario para leer y escribir registros de dispositivo.

Guía del usuario: PDF | HTML