- on Microcontrollers
- Published in issue 12/2000 on page 0
A mini PC Sound Card
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD 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 = 1k?5
R2,R3,R4 = 22?
R5 = 1M?
R6 = 470?
R7 = 680?
R8,R9,R13,R14 = 10k?0 1%
R10,R15 = 8k?25 1%
R11,R16 = 100?
R12,R17 = 220k?
C1,C6,C10,C20 = 10µF 63V radial
C2,C5,C7,C8,C9,C11,C19,C21 = 100nF ceramic, lead pitch 5mm
C3,C4 = 18pF
C12,C15 = 1nF5 1% polystyrene/polypropylene
C13,C16 = 270pF 1% polystyrene/polypropylene
C14,C17 = 3µF3 MKT (Siemens), lead pitch 5 or 7.5mm
C18 = 470nF, lead pitch 5mm
C22 = 470µF 25V radial
C23-C26 = 22nF ceramic, lead pitch 5mm
D1,D2 = 1N4148
D3 = green high-efficiency LED
D4 = red high-efficiency LED
B1 = B80C1500 (80V piv, 1.5A peak), round case
T1,T2 = BC557B
IC1 = PCM2702E (SSOP-28 case) (Burr-Brown)
IC2 = OPA2353UA (SO-8 case) (Burr-Brown)
IC3 = 78L05
K1 = USB connector, receptacle style B (PCB mount)
X1 = 12MHz quartz crystal
PCB, order code 000169-1