INA301A1IDGKR

The INA301 includes both a high common-mode, current-sensing amplifier and a high-speed comparator configured to detect overcurrent conditions through measuring the voltage developed across a current-sensing or current-shunt resistor and comparing that voltage to a defined threshold limit. The device features an adjustable limit threshold range that is set using a single external limit-setting resistor. This current-shunt monitor can measure 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 (-40°C to +125°C), and is available in an 8-pin VSSOP package.

Applications

• Overcurrent Protection
• Power-Supply Protection
• Circuit Breakers
• Computers and Servers
• Telecom Equipment
• Battery Management

Key features

• 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: 20 V/V
• INA301A2: 50 V/V
• INA301A3: 100 V/V
• Programmable Alert Threshold Set Through a Single Resistor
• Total Alert Response Time: 1 μs
• Open-Drain Output With Latching Mode
• Package: VSSOP-8