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Shield wire we connect with SMD jumper to the ground.
Advantage of interface is that only one wire is needed for transferring of complete datasheeg signal. It should work too volume settings using buttons. First I drill holes for crystal, wires, connectors and buttons. Next I solder first side.
Output impedance will be about 72R. I built circuit in two copies and both works on first connection.
75176B PDF Datasheet浏览和下载
All three transfer methods have identical signal encoding and we can soever convert between them. Effect is, that almost all pins are shorted. Connector is usually XLR with three pins with central third pin connected to the ground.
For usual operating systems like Linux or Windows XP are not needed any drivers. Circuit includes these components: Schematics diagram schematics version 1. For transferring of digital audio within equipment is much better I2S bus. We can use too 3 HID buttons for setting volume and mute. I put circuit on 751766b place, solder one pin in the corner and next solder all pins on second side with thin tin. Schematics is almost identical to PCM datasheet. Almost all components and USB connector are placed from bottom side.
It is seen as standard USB soundcard. Next I must use copper solder wick for draining of tin out.
Component view Printed circuit board PCB 75176bb designed for using only one side with two wire junctions in Eagle 5 application.
Low and middle frequencies are perfect, but highes frequencies are a little blurred.
75176b datasheet ePub download
If the component is on the right place, I solder them on the opposite side and finally on the first side. This makes symmetrical output with impedance about R.
This I must more inspect. Schematics and PCB was a little changed. Circuit description Schematics is almost identical to PCM datasheet.
B (TI) PDF技术资料下载 B 供应信息 IC Datasheet 数据表 (1/21 页)
One pin I solder with small amount of tin. These components I solder that after right position I hold them with nail, small screwdriver or tweezer. There exists too professional variant AES3.
Analog output has a good sound without interferences and he is better than usual internal soundcards on PC motherboards. Just it isn’t HiFi, but for most people will be quality of sound output sufficient.
From top side are wire junctions, buttons, inductor, crystal and remaining connectors. Next I solder SMD connector, wire junctions and finally datzsheet components from a top side. PCB is designed for using only one side with two wire junctions in Eagle 5 application.