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.
Feature
- 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
- Wide Common-Mode Input Range: 0 V to 36 V
- Dual Output: Amplifier and Comparator Output
- High Accuracy Amplifier:
- Offset Voltage: 35 μV (Max)
- Offset Voltage Drift: 0.5 μV/°C (Max)
- Gain Error: 0.1% (Max)
- 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
