Zero-Drift, Bi-directional Current/Power Monitor in SOT23 - INA219

INA219 (ACTIVE)

Zero-Drift, Bi-directional Current/Power Monitor in SOT23

Recommended alternative parts

  • INA3221  -  Triple channel voltage and current monitor
  • INA220  -  Low side capable digital current/power monitor
  • INA209  -  More featured and also includes 3 watchdog limits for underlimit, overlimit, and critical warnings.
  • INA210  -  Also offers Zero Drift performance, but with voltage output and SC-70 pkg.
  • INA226  -  10uV offset digital current/power monitor with alert

Description

The INA219 is a high-side current shunt and power monitor with an I2C interface. The INA219 monitors both shunt drop and supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The I2C 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 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1mA of supply current. The INA219 operates from –40°C to +125°C.

Features

  • SENSES BUS VOLTAGES FROM 0V TO +26V
  • REPORTS CURRENT, VOLTAGE, AND POWER
  • 16 PROGRAMMABLE ADDRESSES
  • HIGH ACCURACY: 0.5% (Max) OVER TEMPERATURE (INA219B)
  • FILTERING OPTIONS
  • CALIBRATION REGISTERS
  • SOT23-8 AND SO-8 PACKAGES

View more

Parametrics Compare all products in Current Shunt Monitor Digital Output

 
Input Offset (+/-) (Max) (uV)
Input Offset Drift (+/-) (Typ) (uV/Degrees Celsius)
Iq (Max) (mA)
Gain (V/V)
Gain Error (%)
Small-Signal Bandwidth (Typ) (MHz)
CMRR (Min) (dB)
Vs (Min) (V)
Vs (Max) (V)
Common Mode Range (Min)
Common Mode Range (Max)
Special Features
Rating
Operating Temperature Range (C)
Approx. Price (US$)
INA219
50    
0.1    
1    
1
0.5
0.25
0.125    
0.2    
0.011    
120    
3    
5.5    
0    
26    
Bi-directional
Low-side Capable
I2C    
Catalog    
-25 to 85
-40 to 125    
0.80 | 1ku    

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