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

 

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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INA220 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125

Parametrics

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Part number Order 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 Order now 26     0     50
100    
0.16     1
0.5
0.25
0.125    
0.5
0.3    
83     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Low-side Capable
Programmable Gain    
Catalog     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
INA219 Order now 26     0     50
100    
0.1     1
0.5
0.25
0.125    
0.5
0.3    
83     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Programmable Gain    
Catalog     -40 to 125     SOIC | 8
SOT-23 | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
INA220-Q1 Order now 26     0     50     0.16     1
0.5
0.25
0.125    
0.5     33     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Low-side Capable
Programmable Gain    
Automotive     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)