Current-Triggered Hall Switch?

johny radio

Expert 1280 points

Other Parts Discussed in Thread: TMCS1101

Hello,

We need a Hall switch that will trigger when a 1 Mhz AC signal exceeds a current threshold.

We need to be able to set the threshold, between 0.5A and 4.5A.

Our voltage range is 0 to 5 V.. Max current: 5 A.

Thank you

over 2 years ago

0 Cierra Cowley over 2 years ago

TI__Intellectual 1235 points

Hi Johny,

Unfortunately, we do not have an Hall-effect current sensor with a 1MHz bandwidth available at this time.

TMCS1101 (BW = 80kHz) is the highest BW Hall-effect current sensor offering currently.

Thanks,

Cierra

0 johny radio over 2 years ago in reply to Cierra Cowley

Expert 1280 points

How about an AMR device?

0 Carolus Andrews over 2 years ago in reply to johny radio

TI__Mastermind 24205 points

Johny,

Cierra is out today so I will try to assist here. We also do not make AMR devices at this time. It sounds like you're looking for non-invasive options, but with the voltage range you need to measure here, your best bet may be to examine high speed options using a shunt to measure the 1 MHz current. Is the signal sinusoidal? If it is, we do have the INA296, which has a BW of 1.1MHz that would work here, but it is a shunt based device.

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Current-Triggered Hall Switch?