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Audio Mix Module

Four audio mix modules are used in the prototype mixer unit. Figure 83 shows the silkscreen/assembly layer for this PC board. Table 6 shows the bill of materials for the audio mix board. Figures 84 and 85 show the top and bottom routing layers for this board. Note the presence of surface-mount components on the top routing layer.

Figure 83: Audio mix module PCB, silkscreen/assembly drawing.
\begin{figure}
\psfig{file=pcb/mix-silk.eps,width=5.5in,height=6.5in}
\end{figure}


Table 6: Audio Mix Module, bill of materials.
REFDES QTY DESCRIPTION
R1 - R8 8 10K 1% metal film
C1 - C10 10 0.1uF monolithic
C11,C12 2 10uF electrolytic
U1 - U4 4 SSM2163 (SOIC-28)
U5 1 GAL16V8
U6 1 74LS373
U7 1 74LS04
J1 - J4, J7 - J9 8 16-pin DIP header
J5 1 Molex Mini-Fit Jr. 8-circuit right angle
J6 1 20-pin DIP header


Figure 84: Audio mix module PCB, component-side routing.
\begin{figure}
\psfig{file=pcb/mix-top.eps,width=5.5in,height=6.5in}
\end{figure}

Figure 85: Audio mix module PCB, solder-side routing.
\begin{figure}
\psfig{file=pcb/mix-btm.eps,width=5.5in,height=6.5in}
\end{figure}


next up previous contents
Next: Bus Combiner and Switcher Up: Mixer Unit Previous: Audio Input Module   Contents
Steve Richardson 2000-07-06
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