INA226 Texas instruments

INA226

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INA226

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Описание

The INA226 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts. The INA226 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical of 330 µA of supply current. The device is specified over the operating temperature range between 40°C and 125\xC2°C and features up to 16 programmable addresses on the I2C-compatible interface.

Senses Bus Voltages From 0 V to 36 V
High-Side or Low-Side Sensing
Reports Current, Voltage, and Power
High Accuracy:
- 0.1% Gain Error (Max)
- 10 µV Offset (Max)
Configurable Averaging Options
16 Programmable Addresses
Operates from 2.7-V to 5.5-V Power Supply
10-Pin, DGS (VSSOP) Package

Common-mode voltage (max) (V)	36
Common-mode voltage (min) (V)	0
Input offset (±) (max) (µV)	10
Input offset drift (±) (max) (µV/°C)	0.02
Input offset drift (±) (typ) (µV/°C)	0.02
Voltage gain (V/V)	1
CMRR (min) (dB)	126
Bandwidth (kHz)	3.5
Supply voltage (max) (V)	5.5
Supply voltage (min) (V)	2.7
Iq (max) (mA)	0.42
Digital interface	I2C, SMBus
Gain error (%)	0.1
Gain error drift (±) (max) (ppm/°C)	50
Features	Alert Function, Bi-directional, Integrated Power Monitor, Low-side Capable, Ultra precise
Number of channels	1
Resolution (Bits)	16
Power measurement accuracy (%)	0.2
Rating	Catalog
Operating temperature range (°C)	-40 to 125