OPA1654: Digital filter for 8 channel.

airton bento

Part Number: OPA1654
Other Parts Discussed in Thread: TLV320ADC6140, TLV320ADC3140, TLV320ADC5140

I need to implement a digital filter after amplifier opa1654 circuit, do you have a sugestion what DSP component can I use?

over 4 years ago

0 Michael Hartshorne over 4 years ago

TI__Genius 14545 points

Hello Airton,

From the basic description you have given here, my first estimate is that you will likely need an ADC that can handle 4 inputs along with digital filtering, such as TLV320ADC6140. I'm going to move this post into the ADC forum.

Best Regards,
Mike

0 Carson Allen over 4 years ago in reply to Michael Hartshorne

TI__Genius 13610 points

Is this for Audio purposes?

0 airton bento over 4 years ago in reply to Carson Allen

Prodigy 180 points

Good morning Carson!

I receive a senoidal signal , between 5 a 15 Khz, and I need analyze the amplitude and fase variation, removing noise, I need improve de signal gain and reject noise.

0 Carson Allen over 4 years ago in reply to airton bento

TI__Genius 13610 points

So where is the digital signal coming from? or do you need to convert to digital then filter then reconvert to analog?

0 airton bento over 4 years ago in reply to Carson Allen

Prodigy 180 points

I need to convert to digital, filter and analyze the result, meassure the variations of fase and amplitude of the signal.

0 Carson Allen over 4 years ago in reply to airton bento

TI__Genius 13610 points

Hello,

Let me browse for a device that could suite these needs and I will reply back in 48 hours.

Best Regards,

Carson

0 Carson Allen over 4 years ago in reply to Carson Allen

TI__Genius 13610 points

Hello,

Best options here are TLV320ADC3140, TLV320ADC5140, or TLV320ADC6140 with them all being same except SNR improves as the first digit goes from 3 to 5 to 6. They have most filtering capability of our ADCs.

Best Regards,

Carson