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RE: Contradiction! CD player has lower TDH than its chip

Hi,

First, the Datasheet numbers are obtained using the precise circuit given in the Datasheet and/or implemented on the Evaluation Board. The datasheet and associated schematics/evaluation circuits illustrate the IC manufacturers system used to characterise the IC and give you a platform that will allow you to replicate the IC manufacturer's results reliably, they are not prophetic words set in stone that shall never be altered or challenged.

An actual design, by an actual designers is likely to have variations for many reasons. A poor designer or one with specific design objectives may fail to attain the Datasheet stated DAC IC Performance, while another who may be especially capable or one with specific design objectives may exceed the Datasheet stated DAC IC performance, often quite significantly.

Second, the difference you note is fairly small. Just a slightly cleaner clock than found on the CS4396 Eval Board may cause this sort of variation.

Ciao T

At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to untolerable pain. Really, what more could we need?


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  • RE: Contradiction! CD player has lower TDH than its chip - Thorsten 19:44:20 02/27/17 (0)

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