WM8976 datasheet(9/83 Pages) WOLFSON

部件名	WM8976

功能描述	Low Power CODEC With Speaker Driver

PDF	83 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

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9 / 83 page

Preliminary Technical Data

WM8976

PTD Rev 2.0 February 2005

Dynamic range (dB) – DR 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+N (dB) – THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal.

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.

10. The maximum output voltage can be limited by the speaker power supply.

If OUT3BOOST, OUT4BOOST or

SPKBOOST is set then SPKVDD should be 1.5xAVDD to prevent clipping taking place in the output stage (when

PGA gains are set to 0dB).

WM8976 数据表(PDF) 9 Page - Wolfson Microelectronics plc