GND

OUT

ALERT

IN+

IN-

Load

Supply

(0 V to 36 V)

+2.7 V to 5.5 V

10 k

RESET

+

INA301

0.1 2F

LIMIT

GPIO

GPIO

ADC

DAC

Microcontroller

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

INA301

SBOS713 – SEPTEMBER 2015

INA301

36-V, Low- or High-Side, High-Speed, Zero-Drift, Voltage-Output, Current-Shunt Monitor

with High-Speed, Overcurrent Comparator

1 Features

3 Description

The INA301 includes both a high common-mode

1

•

Wide Common-Mode Input Range: 0 V to 36 V

current-sensing amplifier as well as a high-speed

•

Dual Output: Amplifier and Comparator Output

precision comparator configured to detect overcurrent

•

High Accuracy Amplifier:

conditions through measuring the voltage developed

across a current-sensing or shunt resistor. This

–

Offset Voltage: 100 µV

current shunt monitor can measure this differential

–

Offset Voltage Drift: 0.5 µV/°C

voltage signal on common-mode voltages that can

–

Gain Error: 0.15%

vary from 0 V up to 36 V, independent of the supply

voltage. The device features an adjustable threshold

–

Gain Error Drift: 10 ppm/°C

range that is set using a single external limit-setting

•

Available Amplifier Gains:

resistor.

–

INA301A1: 20 V/V

An open-drain alert output on the device can be

–

INA301A2: 50 V/V

configured to operate in either a transparent mode

–

INA301A3: 100 V/V

where the output status follows the input state or in a

latched mode where the alert output is cleared when

•

Programmable Threshold Set Through a Single

the latch is reset. The device alert response time is

Resistor

issued in under 1 µs to allow for quick detection of

•

Total Alert Response Time: 1 µs

overcurrent events.

•

Open-Drain Output With Latching Mode

This device operates from a single 2.7-V to 5.5-V

•

Package: MSOP-8

supply, drawing a maximum supply current of 700 µA.

The device is specified over the extended operating

2 Applications

temperature

range

(–40°C

to

+125°C),

and

is

available in an MSOP-8 package.

•

Overcurrent Protection

•

Power-Supply Protection

Device Information

•

Circuit Breakers

PART NUMBER

PACKAGE

BODY SIZE

•

Computers and Servers

INA301

MSOP (8)

3.0 mm × 3.0 mm

•

Telecom Equipment

•

Battery Management

Typical Application

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.