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kxmx_kaugummi_4.0

4 months ago 93
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Description

A CS42448 multi-channel audio codec breakout board for the Teensy 4.0

note This PCB does not provide any analog filtering or biasing for the input and output signals and must be done externally. Please refer to the CS42448 data sheet for more info.

This board breaks out the 6 input and 8 output differential audio signal pairs of the CS42448. The digital signaling (TDM) and control (I2C) are routed to the Teensy. The CS42448 is outfitted with bypass capacitors as recommended in the Data sheet, although MLCC ceramics were used in place of electrolytics in several cases.

The small size of this board required a significant amount of routing directly under the codec. Do not expect superior noise performance.

Documents

kaugummi_4.0

kxmx_kaugummi_4.0

BOM

ID Name Designator Footprint Quantity
1 10uF C8,C6,C15,C20 0603 4
2 100nF C3,C9,C16,C21,C2,C1,C18,C5,C11 0603 9
3 100uF C19,C14,C13,C7 1206 4
4 TEENSY 4.0 W. USB ONLY MCU2 TEENSY 4.0 W. USB ONLY 1
5 CS42448 U2 LQFP64-10X10 1
6 Header-2.54_1x5 H2,H1 HDR-5X1/2.54 2
7 Header-2.54_1x16 P2,P1 HDR-16X1/2.54 2
8 22uF C12 0603 1
9 CAT811TTBI-GT3 U1 SOT-143 1
10 2K R2,R1 0603 2
11 100pF C4,C10,C17,C22 0603 4
12 220Ω L1 0805 1

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