Zero-drift bidirectional current/power monitor with I²C interface
The INA219 is a current shunt and power monitor with an I
2C- 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 I
2C- or SMBUS-compatible interface features 16 programmable addresses
Key Features
Measures bus voltages from 0 V to 26 V
Calculates and reports current, voltage, and power
Bidirectional current sensing capability
I²C / SMBus-compatible interface
Up to 16 programmable I²C addresses
High accuracy version (INA219B) with 0.5% maximum error over temperature
Programmable conversion time and digital filtering
Internal calibration register for direct current measurement in amperes
Internal power calculation register for direct power readout in watts
Single supply operation from 3 V to 5.5 V
Low supply current consumption (typically less than 1 mA)
Operating temperature range: −40°C to +125°C
Available in SOIC-8 (DR package) and SOT23-8 package options.
#CommonPartsLibrary #IntegratedCircuit #PowerManagement
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