INA220 26V, Bi-Directional, Low-/High-Side, I2C Out Current/Power Monitor | TI.com

INA220 (ACTIVE)

26V, Bi-Directional, Low-/High-Side, I2C Out Current/Power Monitor

26V, Bi-Directional, Low-/High-Side, I2C Out Current/Power Monitor - INA220
 

Description

The INA220 is a current shunt and power monitor with an I2C- or SMBUS-compatible 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 I2C- or SMBUS-compatible interface features 16 programmable addresses. The separate shunt input on the INA220 allows it to be used in systems with low-side sensing.

The INA220 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA220 senses across shunts on buses that can vary from 0 to 26 V, useful for low-side sensing or CPU power supplies. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA220 operates from –40°C to 125°C.

Features

  • High- or Low-Side Sensing
  • Senses Bus Voltages from 0 V to 26 V
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • High Accuracy: 0.5% (Maximum) Over
    Temperature (INA220B)
  • User-Programmable Calibration
  • Fast (2.56-MHz) I2C- or SMBUS-Compatible
    Interface
  • VSSOP-10 Package
  • APPLICATIONS
    • Servers
    • Telecom Equipment
    • Notebook Computers
    • Power Management
    • Battery Chargers
    • Automotive
    • Power Supplies
    • Test Equipment

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Parametrics Compare all products in Current / Voltage / Power Monitors

 
Common Mode Voltage (Max) (V)
Common Mode Voltage (Min) (V)
Input Offset (+/-) (Max) (uV)
Input Offset Drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain Error (%)
Gain Error Drift (Max) (ppm/°C)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Digital Interface
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
INA220 INA219 INA220-Q1
26     26     26    
0     0     0    
50
100    
50
100    
50    
0.16     0.1     0.16    
1
0.5
0.25
0.125    
1
0.5
0.25
0.125    
1
0.5
0.25
0.125    
0.5
0.3    
0.5
0.3    
0.5    
83     83     33    
120     120     120    
5.5     5.5     5.5    
5.5     5.5     5.5    
3     3     3    
1     1     1    
I2C
SMBus    
I2C
SMBus    
I2C
SMBus    
Bi-directional
Low-side Capable
Programmable Gain    
Bi-directional
Programmable Gain    
Bi-directional
Low-side Capable
Programmable Gain    
Catalog     Catalog     Automotive    
-40 to 125     -40 to 125
to    
-40 to 125    
VSSOP     SOIC
SOT-23    
VSSOP    
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)     8SOIC: 29 mm2: 6 x 4.9(SOIC)
8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)    

Other qualified versions of INA220

Version Part Number Definition
Automotive INA220-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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INA220 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
3 ≤ 
V ≤ 5.5
0 ≤ 
V ≤ 26
-40 ≤ 
C ≤ 125