INA234

AKTIV

Überwachungsmodul für Strom/Spannung/Leistung, 28 V, 12 Bit, I²C-Ausgang, mit Alarm in WCSP

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Datenblatt

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

INA234

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

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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Technische Dokumentation

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	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

Design und Entwicklung

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

Evaluierungsplatine

INA234_236EVM — Evaluierungsmodul INA232, INA234 und INA236 für Strom-/Spannungs-/Leistungsmonitore

Dieses Evaluierungsmodul (EVM) ist eine benutzerfreundliche Plattform zum Evaluieren der Hauptfunktionen und der Leistung des INA232, INA234 oder INA236. Das EVM verfügt über GUI-Unterstützung zum Lesen und Schreiben von Bausteinregister.

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