INA233 Texas instruments

INA233

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INA233

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Описание

The INA233 device is a current, voltage, and power monitor with an I2C-, SMBus-, and PMBus-compatible interface that is compliant with digital bus voltages from 1.8 V to 5.0 V. The device monitors and reports values for current, voltage, and power. The integrated power accumulator can be used for energy or average power calculations. Programmable calibration value, conversion times, and averaging when combined with an internal multiplier enable direct readouts of current in amperes and power in watts.The INA233 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 supply current of 310 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is only 2 µA. The device is specified over the operating temperature range between –40°C and +125°C and features up to 16 programmable addresses.

Senses Bus Voltages From 0 V to 36 V
High-Side or Low-Side Sensing
Reports Current, Voltage, and Power
Integrated Power Accumulator for Energy and Average Power Monitoring
High Accuracy:
- 0.1% Gain Error (Max)
- 10-µV Offset (Max)
Configurable Averaging Options
Independent Alert Limits for Current, Bus Voltage, and Power
1.8-V Compliant I²C, SMBus, PMBus Interface
16 Programmable Addresses
Operates From a 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)	0.1
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)	0.4
Digital interface	I2C, PMBus, SMBus
Gain error (%)	0.1
Gain error drift (±) (max) (ppm/°C)	25
Features	Alert Function, Bi-directional, Integrated Power Accumulator, Integrated Power Monitor, Low-side Capable, PMBus, Ultra precise
Number of channels	1
Resolution (Bits)	16
Rating	Catalog
Operating temperature range (°C)	-40 to 125