32 bit adc

Neat, though no data sheet and no indication as to whether it is completely monotonic. Perhaps they don't need it for audio though...

Regards,

Chris

Huh? 32 bit interface is commonplace in the audio DAC/ADC. The 120dB performance is decent yet this is inferior to the current state of the art.

Vladimir Vassilevsky DSP and Mixed Signal Design Consultant

Does it have to be burned-in ?:-) ...Jim Thompson

-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

Obama says, "I AM NOT a cry baby, Fox REALLY IS out to get me!"

On a sunny day (Thu, 05 Nov 2009 10:03:21 -0800) it happened John Larkin wrote in :

mm they have a 32 bit DAC too, prices at 98 cent for 10,000.

Just too lazy or sceptical to see, n owait, thsi is fun, they claim 2 Vrms out, that makes 5.65 Vpp, divided by 2^32 = 1.317 nV per step. Yes nano nano nano, wonder how much noise is allowed on the supply, or in a one kilomter (mile for the Yankees) radius?

Only if you are counting single electrons

-- Dirk

You can get that today--just add a PRBS!

Cheers

Phil Hobbs

-- Dr Philip C D Hobbs Principal ElectroOptical Innovations

Yes, there are some chips with 32 bit interfaces. But the webpage is a bit misleading (I guess some marketing people wrote it :-) because -120 dB THD is 19.93 bits.

Take a good 24 bitter and add 8 random bits on the bottom and you'd likely do as well.

Assume 10V in.

Whats the band width for audio?

Lets say 10KHz to make the math real easy

Without even bringing in the sqrt(12) factor that usually shows up about here, this looks like pure specsmanship.

They claim 120dB of pure THD, not SINAD. The 120dB THD figure probably implies the signal level of no higher then -20dBFS, and they still should have ~20 bits of resolution at this level. Your assertion about

Vladimir Vassilevsky DSP and Mixed Signal Design Consultant

Just wondering how they have measured the THD.

At least with oversampled _audio_ DACs running at 192 kHz the THD is usually measured only in the 0-20 kHz audio band.

Paul

Pieces of 7 - parroty error.

rofl

Cheers

Phil Hobbs

The same way they measured the quality in oxygen free Monster speaker wire!

Hmmm. Test for monotonicity of a 32-bit converter takes, at 1 MHz, about an hour. Test for monotonicity of a 64-bit converter takes half a million years. They already built the 64-bit converter, the assembly line will spit out the first tested unit ... any day now.

You miss a point: effective you get 20 bit and add a few random Bits. Later you upgrade the random Bits to zero bist and sell this as a feature, that improves the compressability without artefacts.

;-)

Marte

And that requires over 1 Ampere full scale.