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ADCs [message #77450]

Thu, 08 August 2013 17:47

gofar99
Messages: 1955
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi Everyone, anyone out there have some suggestions for a not too costly ADC. Line in to USB out. I have some now, but in one way or another they are all deficient. An M Audio and Berringer are noisy, a Creative 5.1 is flaky and uses a lot of CPU power. The best of the lot is a 10 year old Creative SB Live External (BTW it has to be an external). It has Cirrus chips and uses fewest resources. It claims 24/96 but I suspect it is no where near the performance of things made in the past few years.

Good Listening
Bruce

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Re: ADCs [message #77455 is a reply to message #77450]

Fri, 09 August 2013 12:44

Wayne Parham
Messages: 18793
Registered: January 2001

Illuminati (33rd Degree)

My favorite is the Linear LTC2378-20. But I'm probably kind of old-school on digital stuff, 'cause I just like the Nyquist stuff. Delta-Sigma is all the rage now, but I prefer successive approximation analog->digital and ladder digital->analog. So all the ADCs I've ever designed with were successive approximation devices. Their speed and resolution is great for instrumentation and audio use.

You might ping Keith Larson at Smith & Larson. He comes to LSAF most years and is my go-to guy for the latest digital techniques. He worked as an engineer for TI back when the transition from Nyquist to Delta-Sigma was happening, so he's very familiar with both approaches. Uses them in his speaker measurement gear.

Keith is very approachable, and you'll make a new life-long friend, so reach out to him. Tell him I sent you.

Smith & Larson

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