4 Pin Configuration and Functions

1

OUT

2

GND

3

IN+

4

IN±

5

Vs

Not to scale

Figure 4-1. INA281A: DBV Package 5-Pin SOT-23

Top View

1

OUT

2

GND

3

Vs

4

IN+

5

IN±

Not to scale

Figure 4-2. INA281B: DBV Package 5-Pin SOT-23

Top View

Table 4-1. Pin Functions

PIN

TYPE

DESCRIPTION

NAME

INA281A

INA281B

GND

2

2

Ground

Ground

IN–

4

5

Input

Shunt resistor negative sense input

IN+

3

4

Input

Shunt resistor positive sense input

OUT

1

1

Output

Output voltage

Vs

5

3

Power

Power supply

5 Specifications

5.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)

MIN

MAX

UNIT

Supply Voltage

(VS)

–0.3

22

V

Analog Inputs,

VIN+, VIN– (2)

Differential (VIN+) – (VIN–), INA281A5, INA281B5

–6

6

V

Differential (VIN+) – (VIN–), All others

–12

12

Common-mode

–20

120

Output

GND – 0.3

VS + 0.3

V

TA

Operating temperature

–55

150

°C

TJ

Junction temperature

150

°C

Tstg

Storage temperature

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress

ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated

under Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device

reliability.

(2)

VIN+ and VIN– are the voltages at the IN+ and IN– pins, respectively.

5.2 ESD Ratings

VALUE

UNIT

V(ESD)

Electrostatic discharge

Human body model (HBM), per ANSI/ESDA/

JEDEC JS-001, all pins(1)

±2000

V

Charged device model (CDM), per JEDEC

specification JESD22-C101, all pins(2)

±1000

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

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INA281

SBOSA29A – JUNE 2020 – REVISED NOVEMBER 2023

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