HardLabs

Frequency Reference Distribution

molendijk·Frequency-Reference

Frequency Reference Distribution PCB layout, top view — open source board by molendijk

About the Frequency Reference Distribution PCB

Frequency Reference Distribution is an open source PCB design by molendijk, published on GitHub. It is a 2-layer board measuring 85.3 × 115 mm, with 100 components from 41 distinct parts.

Other key parts include the 551MLFT, LT1085-ADJ and 74LVC74. By type, the board carries 34 resistors, 31 capacitors, 13 connectors, 7 ICs, 4 test points and 2 transistors.

It belongs with the rf & radio and dev boards & breakouts designs in this gallery.

From the project

KiCad Design of a 10MHz Frequency reference distributor and derived 25MHz distributor.

This hardware project is intended for people posessing a 10MHz sinusoidal reference oscillator (GPS DO / Rubidium Source) but require a 25MHz reference for use with an SDR (Adalm-Pluto), ADF4351 (Evaluation board) or a LNB (modified Bulls-Eye).

https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/adalm-pluto.html https://github.com/molendijk/QO100LOADF4351_Loader https://3b8mars.org/wp-content/uploads/2023/10/Bulleye-LNB-modification-for-external-clocking-updated-Oct2023.pdf

Frequency Reference Distribution, from the project README
From the project README

Main components on the Frequency Reference Distribution

551MLFTLT1085-ADJ74LVC74

Frequency Reference Distribution bill of materials (BOM)

100 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
551MLFT
U1, U8, U9
3
LT1085-ADJ
U2, U3, U6
1
74LVC74
U7
2
2N2222
Q1, Q2
3
MHz 10
J1, J2, J3
1
MHz 10 Source
J4
1
MHz 10 LPF
J5
1
CONN_02X07_ODD_EVEN
Conn_02x07_Odd_Even
J6
1
MHz 50 LPF
J7
1
Jack-DC
J8
4
MHz 25
J9, J10, J11, J12
1
MHz 50
J13
1
MHZ50_A
TP1
2
Gnd
TP2, TP3
1
MHZ50_B
TP4
1
Gnd
TP_GND1
1
+3.3V
TP_P3V3
1
+5V
TP_P5V1
1
+15V
TP_P15V1
1
+16V
TP_VBUS1
Show 21 more
QtyPartRefs
2
LED
D1, D2
2
TCCH-80+
L1, L2
4
10NF
10nF
C1, C14, C15, C16
4
100NF
100nF
C2, C19, C21, C23
14
39NF
39nF
C3, C4, C5, C8, C12, C18, C20, C22 +6
3
47UF
47uF
C6, C11, C24
3
22UF
22uF
C7, C9, C10
2
1UF
1uF
C13, C17
1
10UF
10uF
C25
1
220R
R1
1
330R
R2
4
100
R3, R6, R21, R30
13
30
R4, R7, R8, R11, R25, R26, R27, R28 +5
2
5k
R5, R23
2
5K1
5k1
R9, R24
3
00
R10, R14, R22
2
500R
R12, R17
3
120R
R13, R16, R18
1
2k
R15
1
300
R19
1
160
R20

Frequency Reference Distribution design files

The KiCad project lives in the molendijk/Frequency-Reference repository on GitHub; these links point at the commit this page was built from.

Frequency Reference Distribution: common questions

How big is the Frequency Reference Distribution PCB?

The Frequency Reference Distribution measures 85.3 × 115 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Frequency Reference Distribution?

100 components, from 41 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Frequency Reference Distribution design files?

From the molendijk/Frequency-Reference repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Frequency Reference Distribution design in my own project?

The repository has no license, so all rights stay with molendijk. Use it as a reference, and ask the author before reusing the design.

More boards in Frequency-Reference

Similar boards