CS42526 datasheet(82/93 Pages) CIRRUS

Part #	CS42526

Description	114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver

PDF	93 Pages

Scroll/Zoom	100%

Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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82 / 93 page

DS585F1

CS42526

10.1.4

Circuit Board Layout

Board layout and capacitor choice affect each other and determine the performance of the PLL. Figure

30 illustrates a suggested layout for the PLL filter components and for bypassing the analog supply volt-

age. The 10 µF bypass capacitor is an electrolytic in a surface-mount case A or thru-hole package. RFILT,

CFILT, CRIP, and the 0.1 µF decoupling capacitor are in an 0805 form factor. The 0.01 µF decoupling

capacitor is in the 0603 form factor. The traces are on the top surface of the board with the IC so that there

is no via inductance. The traces themselves are short to minimize the inductance in the filter path. The

VARX and AGND traces extend back to their origin and are shown only in truncated form in the drawing.

CFILT

CRIP

0.1 µF

0.01 µF

10 µF

= via to ground plane

Figure 30. Recommended Layout Example

CS42526 Datasheet(PDF) 82 Page - Cirrus Logic