INA3221-Q1 AEC-Q100, 26V, Triple, Bi-Directional, Low-/High-Side, I2C Out Current/Voltage Monitor w/Alerts | TI.com

INA3221-Q1
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AEC-Q100, 26V, Triple, Bi-Directional, Low-/High-Side, I2C Out Current/Voltage Monitor w/Alerts

 

Description

The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.

The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40°C to +125°C. The I2C- and SMBUS-compatible interface features four programmable addresses.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C
      to 125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Senses Bus Voltages From 0 V to 26 V
  • Reports Shunt and Bus Voltage
  • High Accuracy:
    • Offset Voltage: ±80 µV (max)
    • Gain Error: 0.25% (max)
  • Configurable Averaging Options
  • Four Programmable Addresses
  • Programmable Alert and Warning Outputs
  • Power-Supply Operation: 2.7 V to 5.5 V

INA3221-Q1 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)
INA3221-Q1 Order now 26     0     80     0.1     1     0.25     50     110     3.5     5.5     2.7     0.35     I2C
SMBus    
Alert Function
Bi-directional
Low-side Capable    
Automotive     -40 to 125     VQFN | 16     16VQFN: 16 mm2: 4 x 4 (VQFN | 16)