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INA301: INA301

Part Number: INA301


Nowhere do I find output impedance of the amp.

For testing purposes, we are trying to look at the output. It is very noisy in lab environment because we are measuring 60 Hz current. I would like to put across the output a low impedance to cut the pickups.

So how much current can the output stage drive?

Current being sensed through  AAL024-10 device- which is a 2.4 kOhm bridge- a proximity sensor. NULL point moves with magnetic field. The diff  voltage across the bridge is what gets amplified with CM at 2.5V

Our output will never be higher than 500 mV.

can we put 100 Ohms on the output?


  • Robin,

    Output current limitations are shown in figure 16 of the datasheet:

    If this 100 ohms were driven directly to ground, then the expected load current for a Vout of 500mV would be 5mA. The above curve shows that the device can source 5mA up to nearly Vs-0.5V, so this should be fine.  You can find additional information on how to interpret these curves here