CS42428-CQZ Cirrus Logic Inc, CS42428-CQZ Datasheet - Page 63

• Manufacturer Part Number: CS42428-CQZ
• Description: IC CODEC 8CH PLL 192KHZ 64-LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Audio Codecr

Specifications of CS42428-CQZ

• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 8
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 114 / 114
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.13 V ~ 5.25 V
• Operating Temperature: -10°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 8
• No. Of Input Channels: 2
• No. Of Output Channels: 15
• Adc / Dac Resolution: 24bit
• Sampling Rate: 192kSPS
• Ic Interface Type: I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1499 - BOARD EVAL FOR CS42428 CODEC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 598-1031

CS42428
9.1.3
Circuit Board Layout
Board layout and capacitor choice affect each other and determine the performance of the PLL. Figure
26 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
VA and AGND traces extend back to their origin and are shown only in truncated form in the drawing.
0.01 µF
CRIP
0.1 µF
CFILT
10 µF
= via to ground plane
Figure 26. Recommended Layout Example
DS605F1
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