- on Audio/Video/Photography
- Published in issue 12/2002 on page 0
USB Audio Codec with S/PDIF
record digital audio with your PC
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CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1,R3 = 6k?49
R2,R4 = 3k?92
R5 = 4-way 1k?5 SIL array
R6,R7 = 22?
R8 = 1M?
R9,R16 = 5k?76
R10,R17 = 6k?81
R11,R18 = 6k?65
R12,R19 = 20k?0
R13,R20 = 10k?0
R14,R21 = 100?
R15,R22,R25 = 100k?
R23 = 4?7
R24 = 8k?2
R26 = 33k?
R27 = 1k?5
C1,C2,C14,C21 = 3µF3 50V, MKT (Siemens), lead pitch 5 or 7.5mm
C3,C4 = 22pF
C5,C12,C13 = 10µF 63V radial
C6,C23,C24,C28 = 100nF ceramic, lead pitch 5mm
C7,C8 = 33pF
C9,C16 = 1nF5 1% *
C10,C17 = 1nF 1% *
C11,C18 = 470pF 1% *
C15,C22 = 47pF
C19,C20,C25,C26 = 1µF 25V, SMD case 0805 (e.g., Farnell # 317-640)
C27 = 100µF 10V radial
*) polypropylene or polystyrene (EMZ) Inductors:
L1,L2 = BLM31A601S, SMD case 1206 (e.g., Farnell #. 581-094)
L3,L4 = 47µH
D1 = LED, red, high efficiency
T1 = BC557B
IC1 = PCM2902 (Texas Instruments/Burr-Brown)
IC2 = OPA2353UA (Texas Instruments/Burr-Brown)
IC3 = TORX173 (Toshiba)
IC4 = TOTX173 (Toshiba)
IC5 = LE33CZ (ST) (e.g., Farnell # 302-4568)
JP1,JP2 = 3-way SIL pinheader with jumper
JP3,JP4,JP5 = 2-way SIL pinheader
K1,K2 = 3.5mm stereo jack socket, PCB mount (Conrad Electronics # 73 28 93-88)
K3 = USB connector, PCB mount, type B
X1 = 12 MHz quartz crystal, parallel resonance, (Cload = 30pF)
PCB, order code 020178-1