FEATURES
• HIGH- or LOW-SIDE SENSING
• SENSES BUS VOLTAGES FROM 0V TO +26V
• REPORTS CURRENT, VOLTAGE, AND POWER
• 16 PROGRAMMABLE ADDRESSES
• HIGH ACCURACY: 1% (Max) OVER
TEMPERATURE
• USER PROGRAMMABLE CALIBRATION
• FAST (3.4MHz) TWO-WIRE MODE
• MSOP-10 PACKAGE
APPLICATIONS
• SERVERS
• TELECOM EQUIPMENT
• NOTEBOOK COMPUTERS
• POWER MANAGEMENT
• BATTERY CHARGERS
• AUTOMOTIVE
• POWER SUPPLIES
• TEST EQUIPMENT
DESCRIPTION
The INA220 is a current shunt and power monitor with an Two-Wire interface. The INA220 monitors both shunt drop and supply voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in
amperes. An additional multiplying register
calculates power in watts. The Two-Wire
interface features 16 programmable addresses.
The separate shunt input on the INA220
allows it to be used in systems with
low-side sensing.
INA220 Register Block Diagram