Revision 1.3.5

No major changes to the PCB

• Updated to KiCAD 7
• Updated Footprints
• Added CI pipeline
• Removed design files from repository. These can now be found attached to the relevant release.

Full Changelog: v1.3.4...v1.3.5

Revision 1.3.4

• Move Demod_In connector in order to avoid collision with DDS rotary encoder
• Move trim pot from PCB edge to avoid tilted mounting
• Update connector labels

Revision 1.3.3

• Complete assembly information
• Use OPA695 in SOT-23-6 version

Revision 1.3.2

• Add front panel and case

• Move DDS mount to case

• Minor fixes at the detection module

• Update to KiCad 6.0

Revision 1.3.1

Add DDS mounting holes

Revision 1.3

Add the error signal generation to the modulation board. This includes a variable photodiode amplifier, a phase detector, and an 4th-order output filter.

Additional fixes and features:

• Update to KiCad 6
• High-speed input amplifiers (OPA695) with optional gain for all inputs and the RF output
• HMC1031 multiplier set to fix value of 1
• Modified power supply:
  • Remove 3.3V LDO and supply HMC1031 with 3V VCO supply
  • Replace LT3032-5 by LT3045 and LT3094
  • Conncetors for +/-15V and +/-5V supplies
  • TVS diodes
  • clamping diode for LT3045

Revision 1.2

• Add a diode and series resistance to the VCO tuning port in order to avoid negative bias.
• Add LDO for negative DDS supply.
• Replace solder pads with a connector for DDS power supply
• Fix footprint of C18
• Fix KiCad symbols and use latest footprints

Revision 1.2

First non-prototype release. Do not use earlier revisions.
-Single 12V supply for BUF602 (U9)
-Add diode and series resistance to VCO tuning port in order to aviod negative bias
-Add LDO for negative DDS supply
-Replace solder pads with connector for DDS power supply
-Use a dual OpAmp for the demodulation buffer
-Fix KiCad symbols and use latest footprints