Product
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INA301-Q1
  • INA301-Q1
  • INA301-Q1

INA301-Q1

ACTIVE

AEC-Q100, 36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator

Texas Instruments INA301-Q1 Product Info

1 April 2026 4

Parameters

Product type

Analog output with integrated comparator

Common-mode voltage (max) (V)

36

Common-mode voltage (min) (V)

0

Input offset (±) (max) (µV)

35, 50, 125

Input offset drift (±) (typ) (µV/°C)

0.1

Features

Alert Function, High precision, Low-side Capable

Rating

Automotive

Voltage gain (V/V)

20, 50, 100

CMRR (min) (dB)

100

Bandwidth (kHz)

450, 500, 550

Supply voltage (max) (V)

5.5

Supply voltage (min) (V)

2.7

Iq (max) (mA)

0.7

Number of channels

1

Comparators (#)

1

Gain error (%)

0.1, 0.15, 0.2

Gain error drift (±) (max) (ppm/°C)

10

Slew rate (V/µs)

4

TI functional safety category

Functional Safety-Capable

Operating temperature range (°C)

-40 to 125

Package

VSSOP (DGK)-8-14.7 mm² 3 x 4.9

Features

  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C6
  • Functional Safety-Capable
  • Wide common-mode input range: 0 V to 36 V
  • Dual output: amplifier and comparator output
  • High accuracy amplifier:
    • Offset voltage: 35 µV (maximum)
    • Offset voltage drift: 0.5 µV/°C (maximum)
    • Gain error: 0.1% (maximum)
    • Gain error drift: 10 ppm/°C
  • Available amplifier gains:
    • INA301A1-Q1: 20 V/V
    • INA301A2-Q1: 50 V/V
    • INA301A3-Q1: 100 V/V
  • Programmable alert threshold set through a single resistor
  • Total alert response time: 1 µs
  • Open-drain output with both transparent and latching modes
  • Package: VSSOP-8
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C6
  • Functional Safety-Capable
  • Wide common-mode input range: 0 V to 36 V
  • Dual output: amplifier and comparator output
  • High accuracy amplifier:
    • Offset voltage: 35 µV (maximum)
    • Offset voltage drift: 0.5 µV/°C (maximum)
    • Gain error: 0.1% (maximum)
    • Gain error drift: 10 ppm/°C
  • Available amplifier gains:
    • INA301A1-Q1: 20 V/V
    • INA301A2-Q1: 50 V/V
    • INA301A3-Q1: 100 V/V
  • Programmable alert threshold set through a single resistor
  • Total alert response time: 1 µs
  • Open-drain output with both transparent and latching modes
  • Package: VSSOP-8

Description

The INA301-Q1 includes both a high common-mode, current-sensing amplifier and a high-speed comparator configured to provide overcurrent protection by measuring the voltage developed across a current-sensing or current-shunt resistor and comparing that voltage to a defined threshold limit. This device features an adjustable limit-threshold range that is set using a single external limit-setting resistor. This current-shunt monitor measures differential voltage signals on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage.

The open-drain alert output can be configured to operate in either a transparent mode, where the output status follows the input state, or in a latched mode, where the alert output is cleared when the latch is reset. The device alert response time is under 1 µs, allowing for quick detection of overcurrent events.

This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 700 µA. The device is specified over the extended operating temperature range of –40°C to +125°C, and is available in an 8-pin VSSOP package.

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