INA301-Q1 Texas instruments

INA301-Q1

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INA301-Q1

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Описание

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.

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
- Documentation available to aid functional safety system design
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

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
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
Features	Alert Function, High precision, Low-side Capable
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 125