INA219

現行

26-V 12 位元 I2C 輸出數位電源監控器

立即訂購

產品規格表

document-pdfAcrobat INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface datasheet (Rev. G) (英文) PDF | HTML

INA219

現行

產品規格表

立即訂購

產品詳細資料

Common-mode voltage (max) (V)

26

Common-mode voltage (min) (V)

0

Digital interface

I2C, SMBus

Resolution (Bits)

12

Input offset (±) (max) (µV)

50, 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)

100

Iq (max) (mA)

1

Gain error (%)

0.3, 0.5

Gain error drift (±) (max) (ppm/°C)

83, 167

Features

Bidirectional, Intergrated Power Monitor, Programmable Gain

Number of channels

1

Power measurement accuracy (%)

0.8, 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)

50, 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)

100

Iq (max) (mA)

1

Gain error (%)

0.3, 0.5

Gain error drift (±) (max) (ppm/°C)

83, 167

Features

Bidirectional, Intergrated Power Monitor, Programmable Gain

Number of channels

1

Power measurement accuracy (%)

0.8, 1

Rating

Catalog

Operating temperature range (°C)

-40 to 125

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

SOT-23 (DCN)

8

4.64 mm² (2.9 mm × 1.6 mm)

Senses Bus Voltages from 0 to 26 V
Reports Current, Voltage, and Power
16 Programmable Addresses
High Accuracy: 0.5% (Maximum) Over
Temperature (INA219B)
Filtering Options
Calibration Registers
SOT23-8 and SOIC-8 Packages

Senses Bus Voltages from 0 to 26 V
Reports Current, Voltage, and Power
16 Programmable Addresses
High Accuracy: 0.5% (Maximum) Over
Temperature (INA219B)
Filtering Options
Calibration Registers
SOT23-8 and SOIC-8 Packages

The INA219 is a current shunt and power monitor with an I²C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I²C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.

The INA219 is a current shunt and power monitor with an I²C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I²C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.

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INA232

現行

具有警示功能的 48-V、16 位元高精密 I²C 輸出數位電源監控器 Improved performance, but requires software changes to accomodate increased bit depth.

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重要文件	類型	標題	格式選項	日期
*	資料表	INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface datasheet (Rev. G)	PDF \| HTML	2014/10/11
	應用說明	Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A)	PDF \| HTML	2026/4/27
	應用說明	Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers	PDF \| HTML	2024/11/18
	Application brief	How to optimize PoE systems using discrete current sensing	PDF \| HTML	2023/1/27
	使用指南	Migration From INA219 to INA232	PDF \| HTML	2023/1/24
	Application brief	Current Sensing in Mobile Robots	PDF \| HTML	2022/11/29
	電子書	An Engineer's Guide to Current Sensing (Rev. B)		2022/4/12
	應用說明	Digital Interfaces for Current Sensing Devices (Rev. A)	PDF \| HTML	2021/9/30
	Application brief	Integrating the Current Sensing Signal Path (Rev. B)	PDF \| HTML	2021/9/29
	Application brief	Integrated, Current Sensing Analog-to-Digital Converter (Rev. A)	PDF \| HTML	2021/9/28
	應用說明	Getting Started with Digital Power Monitors (Rev. A)	PDF \| HTML	2021/9/2
	選擇指南	Power Management Guide 2018 (Rev. R)		2018/6/25
	Application brief	Energy and Power Monitoring with Digital Current Sensors		2017/5/25
	應用說明	Understanding the I2C Bus	PDF \| HTML	2015/6/30