Software Defined Radio
With USB interface
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Materials
Gerber file
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 the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Component list
R1,R7,R19 = 100?
R2,R3 = 330?
R4 = 100?
R5,R8,R13,R17,R20 = 100k?
R6,R10,R14,R22 = 10k?
R9,R21 = 4k?7
R11,R23 = 27k?
R12,R15,R18 = 470?
R16 = 1M?
R24 = 1k?
R25 = 4?7
Capacitors
C1,C2,C5,C6,C7,C10,C11,C16,C17,C19,C20,C21,C25-C28,C30,C32,C33,C34,C36,C38,C39,C40 = 100nF
C3,C4,C9,C15 = 4µF7 16V radial
C8,C18 = 10nF
C12,C13 = 10pF
C14 = 470µF 16V radial
C22,C24,C35,C37 = 2nF2
C29 = 220pF
C31 = 100pF
Semiconductors
IC1 = 74AC74
IC2,IC7 = 74HC4066
IC3 = CY27EE16 (Cypress)
IC4 = FT232R (FTDI)
IC5 = TL084CN with socket (see text)
IC6 = 74HC4051
T1 = BF245
Inductors
L1-L4 = 10µH
L5 = 47µH
L6 = 2.2mH
Miscellaneous
K1 = USB-B socket, PCB mount
K2 = stereo jack socket, 3.5mm, PCB mount
K3 = 2-way PCB terminal block, lead pitch 5mm
PC1 = solder pin
X1 = 10MHz quartz crystal
Ready-populated and tested PCB, order code 070039-91
Project software, free download 070039-11
Supplementary document, free download
PCB, bare, ref. 070039-1 from www.thepcbshop.com

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