Datasheet

INA219
www.ti.com SBOS448F –AUGUST 2008– REVISED SEPTEMBER 2011
CALIBRATION REGISTER
Calibration Register 05h (Read/Write)
Current and power calibration are set by bits D15 to D1 of the Calibration Register. Note that bit D0 is not used in
the calculation. This register sets the current that corresponds to a full-scale drop across the shunt. Full-scale
range and the LSB of the current and power measurement depend on the value entered in this register. See the
Programming the INA219 Power Measurement Engine section. This register is suitable for use in overall system
calibration. Note that the '0' POR values are all default.
BIT # D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
(1)
BIT
FS15 FS14 FS13 FS12 FS11 FS10 FS9 FS8 FS7 FS6 FS5 FS4 FS3 FS2 FS1 FS0
NAME
POR
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VALUE
(1) D0 is a void bit and will always be '0'. It is not possible to write a '1' to D0. CALIBRATION is the value stored in D15:D1.
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REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (September 2010) to Revision F Page
• Changed values in text. ...................................................................................................................................................... 24
• Changed step 5 and step 6 values in Table 3 .................................................................................................................... 24
Changes from Revision D (September 2010) to Revision E Page
• Updated Packaging Information table ................................................................................................................................... 2
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