Difference between revisions of "Si5351 Oscillator Breakout Board"
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# VFO2 | # VFO2 | ||
| − | == | + | == Test Setup == |
| + | |||
| + | === Test Hardware ==== | ||
| − | |||
* [[Arduino Pro Mini]] | * [[Arduino Pro Mini]] | ||
** 3.3V/8MHz | ** 3.3V/8MHz | ||
| Line 39: | Line 40: | ||
* Mini-360 Voltage regulator (in case) | * Mini-360 Voltage regulator (in case) | ||
** 5-24 VDC input | ** 5-24 VDC input | ||
| + | |||
| + | === Test Software === | ||
| + | |||
| + | * [https://github.com/land-boards/lb-Arduino-Code/tree/master/LBCards/I2C-VFO3 I2C-VFO3 Arduino Code on GitHub] | ||
== Measurements == | == Measurements == | ||
Revision as of 16:04, 10 March 2021
Contents
Features
- I2C Daisy-chain connector
- 3 outputs
- 25 or 27 MHz crystal (Rev 1)
- 27 MHz TCXO (Rev 3)
- Can be used as a heat shrinked assembly with cables
Pinout
J1 - Daisy-chained I2C
- SCL
- SDA
- +3.3V
- GND
J2 - VFO Outputs
- VFO out / GND Pairs
- VFO0
- VFO1
- VFO2
Test Setup
Test Hardware =
- Arduino Pro Mini
- 3.3V/8MHz
- Rotary Encoder/Breakout Board
- 128x32 OLED
- Breadboard Power Supply
- 3.3V operation
- Mini-360 Voltage regulator (in case)
- 5-24 VDC input
Test Software
Measurements
- 10 MHz FFT
- Square wave has high odd harmonic content
Revision History
Rev 3
- TXCO
- Fixed solder mask clearance
Rev 2
- TXCO instead of crystal
- Insufficient solder mask (too big a clearance)
Rev 1
- Used crystal
Assembly Sheet
| Qty | Value | RefDes | Qty | Value | RefDes | |
|---|---|---|---|---|---|---|
| 2 | 0.1uF | C1,C2 | 1 | Header, Right Angle, 2x3 | J2 | |
| 2 | 2.2K | R1,R2 | 1 | Header, Right Angle, 2x4 | J1 | |
| 1 | TCXO, 27 MHz ASE-xxxMHz | U2 | ||||
| 1 | Si5351A | U1 |
