Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

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

Posted by Thorsten on February 27, 2017 at 19:44:20:
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.