1

IN±

8

IN+

2

GND

7

NC

3

PRE OUT

6

V

4

BUF IN

5

OUT

(1)

S

3

INA270A-Q1, INA271A-Q1

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SBOS401C – JULY 2007 – REVISED APRIL 2016

Product Folder Links: INA270A-Q1 INA271A-Q1

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5 Device Comparison Table

DEVICE

GAIN

INA270A-Q1

14 V/V

INA271A-Q1

20 V/V

(1)

A = Analog, AI = Analog input, AO = Analog output

6 Pin Configuration and Functions

D Package

8-Pin SOIC

Top View

(1)

NC – No internal connection

Pin Functions

PIN

DESCRIPTION

NAME

NO.

BUF IN

4

AI

Buffer Input. Connect to output of filter from PRE OUT

GND

2

A

Ground

IN–

1

AI

Negative input. Connect to load side of shunt resistor.

IN+

8

AI

Positive input. Connect to supply side of shunt resistor.

NC

7

—

Not internally connected. Connect to ground.

PRE OUT

3

AO

Pre Amplifier Output. Connect to input of filter to BUF IN.

OUT

5

AO

Output

6

AI

Power supply, 2.7 V to 18 V

(1)

Stresses beyond those listed under Absolute Maximum Ratings 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 Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7 Specifications

7.1 Absolute Maximum Ratings

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

(1)

MIN

MAX

UNIT

Supply voltage

18

V

–18

18

V

–16

80

V

Analog output voltage range (OUT and PRE OUT)

(GND – 0.3)

V

Input current (any pin)

5

mA

Maximum junction temperature

150

°C

Operating free-air temperature

–40

125

°C

Storage temperature

–65

150

°C