WM8590GEDSSLASHV datasheet(8/51 Pages) WOLFSON

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WM8590

Pre-Production

PP Rev 3.3 September 2005

TERMINOLOGY

Signal-to-noise ratio (dB) – SNR is a measure of the difference in level between the full scale output and the output

with no signal applied. (No Auto-zero or Automute function is employed in achieving these results).

Dynamic range (dB) – DNR is a measure of the difference between the highest and lowest portions of a signal.

Normally a THD+N measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB

to it. (e.g. THD+N @ -60dB= -32dB, DR= 92dB).

THD (dB) – THD is a ratio, of the rms values, of Distortion/Signal.

Stop band attenuation (dB) – Is the degree to which the frequency spectrum is attenuated (outside audio band).

Channel Separation (dB) – Also known as Cross-Talk. This is a measure of the amount one channel is isolated from

the other. Normally measured by sending a full scale signal down one channel and measuring the other.

Pass-Band Ripple – Any variation of the frequency response in the pass-band region.

The WM8590 employs CMOS switching levels on the digital interface input. Logic 0

VIL. Logic 1

VIH.

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