AMC1100: AMC1100

Amruta Bhujbal67

Part Number: AMC1100
Other Parts Discussed in Thread: AMC1311,

Hello,

I want to sense 3 Ph voltage and also display that voltage on LCD.I am go through the data sheet of AMC1100 but I have doubt so I am post this question.Can I go ahead with this IC or an other option for this.Also I have to check Phase sequence of 3 Ph corect or not. Please give suggestion.

Thank You

over 6 years ago

0 Tom Hendrick over 6 years ago

TI__Guru**** 168445 points

Hi Amruta,

The AMC1100 is an isolation amplifier which was designed primarily for current sensing operations using a small value shunt. While you can measure voltage with the device using a resistive divider to get down to the +/-250mV input range of the AMC1100, you might want to look at the AMC1311 instead - it has a larger input voltage range and is better suited for doing voltage measurements. Of coarse to display voltages on an LCD, you would have to digitize the output and do a little post processing in a micro.

0 Andy Reigle over 6 years ago in reply to Tom Hendrick

Prodigy 40 points

Is there a reference design showing the AMC1311 used for phase voltage measurement?

0 Tom Hendrick over 6 years ago in reply to Andy Reigle

TI__Guru**** 168445 points

Hi Andy,

Use this link and scroll down to 'Reference Designs': www.ti.com/.../toolssoftware

0 Andy Reigle over 6 years ago in reply to Tom Hendrick

Prodigy 40 points

Thanks Tom.

I've only seen the 1311 used in the datasheet and reference designs for monitoring the DC bus. I'd like to use the 1311 for phase to DC minus voltage measurement or would another TI part be better suited for that?

Regards,
Andy

0 Tom Hendrick over 6 years ago in reply to Andy Reigle

TI__Guru**** 168445 points

Hi Andy,

We'll have a bipolar input device coming out later this year, if you'd like more detail on that, let me know and I'll send you a note offline.

0 Andy Reigle over 6 years ago in reply to Tom Hendrick

Prodigy 40 points

Yes. Thanks!

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AMC1100: AMC1100