ina219 datasheet

INA219
www.ti.com SBOS448G –AUGUST 2008–REVISED DECEMBER 2015
4. Complement the binary result : 000 0010 1111 1111
5. Add 1 to the Complement to create the Two’s Complement formatted result → 000 0011 0000 0000
6. Extend the sign and create the 16-bit word: 1000 0011 0000 0000 = 8300h (Remember to extend the sign to
all sign-bits, as necessary based on the PGA setting.)
At PGA = /8, full-scale range = ±320 mV (decimal = 32000). For V
SHUNT
= +320 mV, Value = 7D00h; For V
SHUNT
= –320 mV, Value = 8300h; and LSB = 10µV.
Figure 20. Shunt Voltage Register at PGA = /8
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SD14_ SD13_ SD12_ SD11_ SD10_
SIGN SD9_8 SD8_8 SD7_8 SD6_8 SD5_8 SD4_8 SD3_8 SD2_8 SD1_8 SD0_8
8 8 8 8 8
At PGA = /4, full-scale range = ±160 mV (decimal = 16000). For V
SHUNT
= +160 mV, Value = 3E80h; For V
SHUNT
= –160 mV, Value = C180h; and LSB = 10µV.
Figure 21. Shunt Voltage Register at PGA = /4
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SD13_ SD12_ SD11_ SD10_
SIGN SIGN SD9_4 SD8_4 SD7_4 SD6_4 SD5_4 SD4_4 SD3_4 SD2_4 SD1_4 SD0_4
4 4 4 4
At PGA = /2, full-scale range = ±80 mV (decimal = 8000). For V
SHUNT
= +80 mV, Value = 1F40h; For V
SHUNT
=
–80 mV; Value = E0C0h; and LSB = 10µV.
Figure 22. Shunt Voltage Register at PGA = /2
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SD12_ SD11_ SD10_
SIGN SIGN SIGN SD9_2 SD8_2 SD7_2 SD6_2 SD5_2 SD4_2 SD3_2 SD2_2 SD1_2 SD0_2
2 2 2
At PGA = /1, full-scale range = ±40 mV (decimal = 4000). For V
SHUNT
= +40 mV, Value = 0FA0h; For V
SHUNT
=
–40 mV, Value = F060h; and LSB = 10µV.
Figure 23. Shunt Voltage Register at PGA = /1
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SD11_ SD10_
SIGN SIGN SIGN SIGN SD9_1 SD8_1 SD7_1 SD6_1 SD5_1 SD4_1 SD3_1 SD2_1 SD1_1 SD0_1
1 1
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