Texas Instruments INA219BID

Reference Designs (14)

Attributes

Part Number
Manufacturer
Datasheet
Prefix
U
Approved Alternate Part Number
Category
Amplifiers, Buffers
Category
Operational Amplifiers (General Purpose)
Category
Semiconductors and Actives
Digikey Description
Digikey Part Number
Imported From Octopart
yes
Lead Free
Yes
Mfg Package Ident
D (R-PDSO-G8)
Mouser Part Number
Octopart Part Number
d4921cb8a0350b55
Package
SOIC8
RoHS
Yes
Temperature Range High
Temperature Range Low
Verified Attributes
true
Verified Geometry
true
Verified Pad Assignment
true
Verified Pin Names
true
Supply Current
500 uA

Pins

1
A1
2
A0
3
SDA
4
SCL
5
VS
6
GND
7
VIN-
8
VIN+

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Contributors

Datasheet Preview

´
PowerRegister
CurrentRegister
I C
Interface
2
VoltageRegister
V
IN+
V
IN-
V
S
(SupplyVoltage)
A0
A1
Data
CLK
ADC
PGA
INA219
GND
INA219
www.ti.com
SBOS448F AUGUST 2008 REVISED SEPTEMBER 2011
Zerø-Drift, Bi-Directional
CURRENT/POWER MONITOR with I
2
C Interface
Check for Samples: INA219
1
FEATURES
DESCRIPTION
The INA219 is a high-side current shunt and power
23
SENSES BUS VOLTAGES FROM 0V TO +26V
monitor with an I
2
C interface. The INA219 monitors
REPORTS CURRENT, VOLTAGE, AND POWER
both shunt drop and supply voltage, with
16 PROGRAMMABLE ADDRESSES
programmable conversion times and filtering. A
programmable calibration value, combined with an
HIGH ACCURACY: 0.5% (Max) OVER
internal multiplier, enables direct readouts in
TEMPERATURE (INA219B)
amperes. An additional multiplying register calculates
FILTERING OPTIONS
power in watts. The I
2
C interface features 16
CALIBRATION REGISTERS
programmable addresses.
SOT23-8 AND SO-8 PACKAGES
The INA219 is available in two grades: A and B. The
B grade version has higher accuracy and higher
APPLICATIONS
precision specifications.
SERVERS
The INA219 senses across shunts on buses that can
vary from 0V to 26V. The device uses a single +3V to
TELECOM EQUIPMENT
+5.5V supply, drawing a maximum of 1mA of supply
NOTEBOOK COMPUTERS
current. The INA219 operates from 40°C to +125°C.
POWER MANAGEMENT
BATTERY CHARGERS RELATED PRODUCTS
DESCRIPTION DEVICE
WELDING EQUIPMENT
Current/Power Monitor with Watchdog,
INA209
POWER SUPPLIES
Peak-Hold, and Fast Comparator Functions
TEST EQUIPMENT
Zerø-Drift, Low-Cost, Analog Current Shunt INA210, INA211, INA212,
Monitor Series in Small Package INA213, INA214
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2I
2
C is a trademark of NXP Semiconductors.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 20082011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
INA219
SBOS448F AUGUST 2008 REVISED SEPTEMBER 2011
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
Table 1. PACKAGING INFORMATION
(1)
PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR PACKAGE MARKING
SO-8 D I219A
INA219A
SOT23-8 DCN A219
SO-8 D I219B
INA219B
SOT23-8 DCN B219
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or visit the
INA219 product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
(1)
Over operating free-air temperature range (unless otherwise noted).
INA219 UNIT
Supply Voltage, V
S
6 V
Differential (V
IN+
) (V
IN
)
(2)
26 to +26 V
Analog Inputs,
V
IN+
, V
IN
Common-Mode -0.3 to +26 V
SDA GND 0.3 to +6 V
SCL GND 0.3 to V
S
+ 0.3 V
Input Current Into Any Pin 5 mA
Open-Drain Digital Output Current 10 mA
Operating Temperature 40 to +125 °C
Storage Temperature 65 to +150 °C
Junction Temperature +150 °C
Human Body Model 4000 V
ESD Ratings Charged-Device Model 750 V
Machine Model (MM) 200 V
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) V
IN+
and V
IN
may have a differential voltage of 26V to +26V; however, the voltage at these pins must not exceed the range 0.3V to
+26V.
2 Submit Documentation Feedback Copyright © 20082011, Texas Instruments Incorporated
Product Folder Link(s): INA219
INA219
www.ti.com
SBOS448F AUGUST 2008 REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS: V
S
= +3.3V
Boldface limits apply over the specified temperature range, T
A
= 25°C to +85°C.
At T
A
= +25°C, V
IN+
= 12V, V
SENSE
= (V
IN+
V
IN
) = 32mV, PGA = ÷ 1, and BRNG
(1)
= 1, unless otherwise noted.
INA219A INA219B
PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT
INPUT
Full-Scale Current Sense (Input) Voltage Range 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) Range
(2)
BRNG = 1 0 32 0 32 V
BRNG = 0 0 16 0 16 V
Common-Mode Rejection CMRR V
IN+
= 0V to 26V 100 120 100 120 dB
Offset Voltage, RTI
(3)
V
OS
PGA = ÷ 1 ±10 ±100 ±10 ±50
(4)
μV
PGA = ÷ 2 ±20 ±125 ±20 ±75 μV
PGA = ÷ 4 ±30 ±150 ±30 ±75 μV
PGA = ÷ 8 ±40 ±200 ±40 ±100 μV
vs Temperature 0.1 0.1 μV/°C
vs Power Supply PSRR V
S
= 3V to 5.5V 10 10 μV/V
Current Sense Gain Error ±40 ±40 m%
vs Temperature 1 1 m%/°C
Input Impedance Active Mode
V
IN+
Pin 20 20 μA
V
IN
Pin 20 || 320 20 || 320 μA || k
Input Leakage
(5)
Power-Down Mode
V
IN+
Pin 0.1 ±0.5 0.1 ±0.5 μA
V
IN
Pin 0.1 ±0.5 0.1 ±0.5 μA
DC ACCURACY
ADC Basic Resolution 12 12 Bits
1 LSB Step Size
Shunt Voltage 10 10 μV
Bus Voltage 4 4 mV
Current Measurement Error ±0.2 ±0.5 ±0.2 ±0.3 %
over Temperature ±1 ±0.5 %
Bus Voltage Measurement Error ±0.2 ±0.5 ±0.2 ±0.5 %
over Temperature ±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
(1) BRNG is bit 13 of the Configuration Register.
(2) This parameter only expresses the full-scale range of the ADC scaling. In no event should more than 26V be applied to this device.
(3) Referred-to-input (RTI).
(4) Shaded cells indicate improved specifications of the INA219B.
(5) 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.
Copyright © 20082011, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): INA219
INA219
SBOS448F AUGUST 2008 REVISED SEPTEMBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS: V
S
= +3.3V (continued)
Boldface limits apply over the specified temperature range, T
A
= 25°C to +85°C.
At T
A
= +25°C, V
IN+
= 12V, V
SENSE
= (V
IN+
V
IN
) = 32mV, PGA = ÷ 1, and BRNG
(1)
= 1, unless otherwise noted.
INA219A INA219B
PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT
SMBus
SMBus Timeout
(6)
28 35 28 35 ms
DIGITAL INPUTS
(SDA as Input, SCL, A0, A1)
Input Capacitance 3 3 pF
Leakage Input Current 0 V
IN
V
S
0.1 1 0.1 1 μA
Input Logic Levels:
V
IH
0.7 (V
S
) 6 0.7 (V
S
) 6 V
V
IL
0.3 0.3 (V
S
) 0.3 0.3 (V
S
) V
Hysteresis 500 500 mV
OPEN-DRAIN DIGITAL OUTPUTS (SDA)
Logic '0' Output Level I
SINK
= 3mA 0.15 0.4 0.15 0.4 V
High-Level Output Leakage Current V
OUT
= V
S
0.1 1 0.1 1 μA
POWER SUPPLY
Operating Supply Range +3 +5.5 +3 +5.5 V
Quiescent Current 0.7 1 0.7 1 mA
Quiescent Current, Power-Down Mode 6 15 6 15 μA
Power-On Reset Threshold 2 2 V
TEMPERATURE RANGE
Specified Temperature Range 25 +85 25 +85 °C
Operating Temperature Range 40 +125 40 +125 °C
Thermal Resistance
(7)
θ
JA
SOT23-8 142 142 °C/W
SO-8 120 120 °C/W
(6) SMBus timeout in the INA219 resets the interface any time SCL or SDA is low for over 28ms.
(7) θ
JA
value is based on JEDEC low-K board.
4 Submit Documentation Feedback Copyright © 20082011, Texas Instruments Incorporated
Product Folder Link(s): INA219