INA301-Q1 36-V, Automotive, High-Speed, Zero-Drift, Voltage-Output Current-Shunt Monitor With High-Speed, Overcurrent Protection Comparator
1 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
2 Applications
- Solenoid Control
- Low-Side Motor Monitoring
- Electronic Power Steering
- Power Seats
- Power Windows
- Body Control Modules
- Electronic Control Units
- Overcurrent Protection
- eFuses
3 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.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| INA301-Q1 | VSSOP (8) | 3.00 mm × 3.00 mm |
Typical Application