Datasheet

IN3
IN+3
GND
VS
IN+1
IN1
PV
Critical
1
2
3
4
12
11
10
9
VPU IN+2 IN2
TC
16 15 14 13
A0
SCL
SDA
Warning
5 6 7 8
INA3221
www.ti.com SBOS576A –MAY 2012–REVISED JUNE 2013
PIN CONFIGURATIONS
RGV PACKAGE
QFN-16
(Top View)
PIN DESCRIPTIONS
PIN
ANALOG OR DIGITAL
INPUT/OUTPUT
NAME NO DESCRIPTION
Address pin. Connect to GND, SCL, SDA, or V
S
.
A0 5 Digital input
Table 7 shows pin settings and corresponding addresses.
Critical 9 Digital output Conversion-triggered critical alert; open-drain output.
GND 3 Analog Ground
Connect to load side of the channel 1 shunt resistor.
IN–1 11 Analog input
Bus voltage is the measurement from this pin to ground.
IN+1 12 Analog input Connect to supply side of the channel 1 shunt resistor.
Connect to load side of the channel 2 shunt resistor.
IN–2 14 Analog input
Bus voltage is the measurement from this pin to ground.
IN+2 15 Analog input Connect to supply side of the channel 2 shunt resistor.
Connect to load side of the channel 3 shunt resistor.
IN–3 1 Analog input
Bus voltage is the measurement from this pin to ground.
IN+3 2 Analog input Connect to supply side of the channel 3 shunt resistor.
PV 10 Digital output Power valid alert; open-drain output.
SCL 6 Digital input Serial bus clock line; open-drain input.
SDA 7 Digital I/O Serial bus data line; open-drain input/output.
TC 13 Digital output Timing control alert; open-drain output.
VPU 16 Analog input Pull-up supply voltage used to bias power valid output circuitry.
VS 4 Analog Power supply, 2.7 V to 5.5 V.
Warning 8 Digital output Averaged measurement warning alert; open-drain output.
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