• Changed Critical Alert section text for clarity. .................................................................................................. 12

• Added Summation Control Function section.................................................................................................... 12

• Changed external "RPU" to "RPU_ext" in Figure 20............................................................................................ 13

• Changed Multiple Channel Monitoring section text for clarity. .........................................................................17

• Added X and Y axis labels to Figure 25........................................................................................................... 18

• Changed "bidirectional" to "I/O" in second paragraph of Bus Overview section.............................................. 20

• Changed VS+ to VS in Table 1..........................................................................................................................20

• Changed references in Figure 30 to point to correct notes.............................................................................. 21

• Changed Figure 31...........................................................................................................................................22

• Changed values in Table 2, Bus Timing Definitions ........................................................................................ 22

• Added data valid time to Table 2, Bus Timing Definitions ................................................................................22

• Changed fall time to split data and clock times in Table 2, Bus Timing Definitions ......................................... 22

• Deleted rise time for data in Table 2, Bus Timing Definitions .......................................................................... 22

• Deleted trace from SDA to SCL, and added missing connector dot to VS in Figure 52 .................................. 37

Changes from Revision * (May 2012) to Revision A (June 2013)

Page

• Changed Shunt voltage input range parameter values in Electrical Characteristics table................................. 5

• Updated Figure 19............................................................................................................................................13

• Changed second paragraph of Serial Bus Address section............................................................................. 20

• Updated Figure 27 and note (1)....................................................................................................................... 21

• Updated Figure 28 and note (1)....................................................................................................................... 21

• Updated Figure 29 and note (1)....................................................................................................................... 21

• Updated Figure 30 and note (1)....................................................................................................................... 21

• Changed bit D15 in Power Valid Upper Limit Register..................................................................................... 35

• Changed bit D15 in Power Valid Lower Limit Register..................................................................................... 35

11 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most

current data available for the designated devices. This data is subject to change without notice and revision of

this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

www.ti.com

INA3221

SBOS576C – MAY 2012 – REVISED SEPTEMBER 2025

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