Datasheet

INA3221
SBOS576A –MAY 2012–REVISED JUNE 2013 www.ti.com
Channel 2 Shunt Voltage Register (Address = 03h, Read-Only)
Full-scale range = 163.8 mV (decimal = 7FF8); LSB (SD0): 40 μV. This register contains the averaged shunt
voltage measurement for channel 2.
BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
NAME SIGN SD11 SD10 SD9 SD8 SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 — — —
POR
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VALUE
This register stores the current shunt voltage reading, V
SHUNT
, for channel 2.
Channel 2 Bus Voltage Register (Address = 04h, Read-Only)
(1)
Full-scale range = 32.76 V
(1)
(decimal = 7FF8); LSB (BD0) = 8 mV.
BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
NAME SIGN BD11 BD10 BD9 BD8 BD7 BD6 BD5 BD4 BD3 BD2 BD1 BD0 — — —
POR
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VALUE
(1) While the input range is 26 V, the full-scale range of the ADC scaling is 32.76 V. Do not apply more than 26 V.
This register stores the bus voltage reading, V
BUS
, for channel 2.
Channel 3 Shunt Voltage Register (Address = 05h, Read-Only)
Full-scale range = 163.8 mV (decimal = 7FF8); LSB (SD0): 40 μV. This register contains the averaged shunt
voltage measurement for channel 3.
BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
NAME SIGN SD11 SD10 SD9 SD8 SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 — — —
POR
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VALUE
This register stores the current shunt voltage reading, V
SHUNT
, for channel 3.
Channel 3 Bus Voltage Register (Address = 06h, Read-Only)
(1)
Full-scale range = 32.76 V
(1)
(decimal = 7FF8); LSB (BD0) = 8 mV.
BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
NAME SIGN BD11 BD10 BD9 BD8 BD7 BD6 BD5 BD4 BD3 BD2 BD1 BD0 — — —
POR
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VALUE
(1) While the input range is 26 V, the full-scale range of the ADC scaling is 32.76 V. Do not apply more than 26 V.
This register stores the bus voltage reading, V
BUS
, for channel 3.
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