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INA220AIDGSR Datasheet(PDF) 5 Page - Texas Instruments

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Part # INA220AIDGSR
Description  High- or Low-Side, Bidirectional Current and Power Monitor
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA220AIDGSR Datasheet(HTML) 5 Page - Texas Instruments

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5
INA220
www.ti.com
SBOS459E – JUNE 2009 – REVISED JANUARY 2016
Product Folder Links: INA220
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
(1)
BRNG is bit 13 of the Configuration Register 00h (see Figure 19).
(2)
This parameter only expresses the full-scale range of the ADC scaling. In no event should more than 26 V be applied to this device.
(3)
Referred-to-input (RTI)
(4)
Indicates improved specifications of the INA220B.
(5)
The input impedance of this pin may vary approximately ±15%.
(6)
Input leakage is positive (current flowing into the pin) for the conditions shown at the top of the table. Negative leakage currents can
occur under different input conditions.
(7)
SMBus timeout in the INA220 resets the interface any time SCL or SDA is low for more than 28 ms.
7.5 Electrical Characteristics
at TA = 25°C, VS = 3.3 V, VIN+ = 12 V, VSHUNT = (VIN+ – VIN–) = 32 mV, VVBUS = 12 V, PGA = /1, and BRNG
(1) = 1, unless
otherwise noted.
TEST CONDITIONS
INA220A
INA220B
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
INPUT
Full-scale current sense (input) voltage
range
VSHUNT
PGA = /1
0
±40
0
±40
mV
PGA = /2
0
±80
0
±80
mV
PGA = /4
0
±160
0
±160
mV
PGA = /8
0
±320
0
±320
mV
Bus voltage (input voltage)(2)
BRNG = 1
0
32
0
32
V
BRNG = 0
0
16
0
16
V
Common-mode rejection
VIN+ = 0 to 26 V
100
120
100
120
dB
Offset Voltage,
RTI(3)
VOS
PGA = /1
±10
±100
±10
±50(4)
μV
PGA = /2
±20
±125
±20
±75(4)
μV
PGA = /4
±30
±150
±30
±75(4)
μV
PGA = /8
±40
±200
±40
±100(4)
μV
TA = –40°C to 85°C
0.16
0.16
μV/°C
versus power
supply
PSRR
VS = 3 to 5.5 V
10
10
μV/V
Current sense gain error
±40
±40
m%
TA = –40°C to 85°C
1
1
m%/°C
IN+ pin input impedance
Active mode
20
20
μA
IN– pin input impedance
Active mode
20
20
μA
VBUS pin input impedance(5)
Active mode
320
320
k
IN+ pin input leakage(6)
Power-down mode
0.1
±0.5
0.1
±0.5
μA
IN– pin input leakage(6)
Power-down mode
0.1
±0.5
0.1
±0.5
μA
DC ACCURACY
ADC basic resolution
12
12
bits
Shunt voltage
1-LSB step size
10
10
μV
Bus voltage
1-LSB step size
4
4
mV
Current measurement error
±0.2%
±0.5%
±0.2%
±0.3%(4)
over Temperature
TA = –40°C to 85°C
±1%
±0.5%(4)
Bus voltage measurement error
VBUS = 12 V
±0.2%
±0.5%
±0.2%
±0.5%
over Temperature
TA = –40°C to 85°C
±1%
±1%
Differential nonlinearity
±0.1
±0.1
LSB
ADC TIMING
ADC conversion time
12-bit
532
586
532
586
μs
11-bit
276
304
276
304
μs
10-bit
148
163
148
163
μs
9-bit
84
93
84
93
μs
Minimum convert input low time
4
4
μs
SMBus
SMBus timeout(7)
28
35
28
35
ms


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