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INA3221AIRGVT Datasheet(PDF) 26 Page - Texas Instruments

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Part # INA3221AIRGVT
Description  Triple-Channel, High-Side Measurement, Shunt and Bus Voltage Monitor
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA3221AIRGVT Datasheet(HTML) 26 Page - Texas Instruments

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INA3221
SBOS576 – MAY 2012
www.ti.com
Critical Alert Channel 3 Limit Register (Address = 0Bh, Read/Write)
BIT
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
NAME
C3L12
C3L11
C3L10
C3L9
C3L8
C3L7
C3L6
C3L5
C3L4
C3L3
C3L2
C3L1
C3L0
POR
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
VALUE
This register contains the value used to compare to each shunt voltage conversion on channel 3 to detect fast
overcurrent events.
Warning Alert Channel 3 Limit Register (Address = 0Ch, Read/Write)
BIT
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
NAME
W3L12
W3L11
W3L10
W3L9
W3L8
W3L7
W3L6
W3L5
W3L4
W3L3
W3L2
W3L1
W3L0
POR
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
VALUE
This register contains the value used to compare to the averaged shunt voltage value of channel 3 to detect a
longer duration overcurrent event.
Shunt Voltage Sum Register (Address = 0Dh, Read-Only)
BIT
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
NAME
SIGN
SV13
SV12
SV11
SV10
SV9
SV8
SV7
SV6
SV5
SV4
SV3
SV2
SV1
SV0
POR
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VALUE
This register contains the sum of the single conversion shunt voltages of the selected channels based on the
summation control bits 12, 13, and 14 in the Mask/Enable Register.
This register is updated with the most recent sum following each complete cycle of all selected channels. The
Shunt Voltage Sum Register LSB value is 40 µV.
Shunt Voltage Sum Limit Register (Address = 0Eh, Read/Write)
BIT
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
NAME
SIGN
SVL13
SVL12
SVL11
SVL10
SVL9
SVL8
SVL7
SVL6
SVL5
SVL4
SVL3
SVL2
SVL1
SVL0
POR
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
VALUE
This register contains the value used to compare the Shunt Voltage following each completed cycle of all
selected channels to detect for system overcurrent events. The Shunt Voltage Sum Limit Register LSB value is
40 µV.
26
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): INA3221


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