2019-06 Aivon produces S/N 20 and beyond
As of June 2019 more than 20 pcs of the FDA/PDA design have been produced. So far the design is stable and performance has been sufficient for many users.
2019-01 Sync Technology - planning commercial production of PDA/FDA
added by Anders Wallin on 2019-01-04 08:10:21.937351
Sync Technology from China has plans to produce the PDA/FDA http://www.synctechnology.cn/EN_detaile.aspx?id=153
2018-12 FDA performace testing
added by Anders Wallin on 2018-12-09 18:03:20.839771
14-hour runs on FDA S/N 16 from Aivon LTD now in Aders' blog:
The conclusion is that it is quite hard to measure the performance of the amplifier, because the instrument noise-floor usually dominates!
2018-12 Narrow version of FDA-board
added by Anders Wallin on 2018-12-09 18:00:31.751561
Here's a modification of the FDA PCB design to fit in an enclosure that
takes a 160mm wide board:
design-files to be added here.
2018-02 Aivon LTD announces commercial availability of 1:8 PDA/FDA
added by Anders Wallin on 2018-02-15 09:45:52.290643
Aivon LTD is now commercially producing the 1:8 PDA/FDA design in a 1U 19" form-factor.
2018-02 Draft datasheet now in git-repo
added by Anders Wallin on 2018-02-15 09:42:23.503318
A draft datasheet with performance measurements is now available in the
If you have measurement capability and interest we welcome contributions and corrections to the datasheet!
2018-01 Enclosure notes and design-files added
added by Anders Wallin on 2018-01-03 08:25:40.600183
Enclosure notes with dimensions and part numbers.
Schaeffer front-panel designer design-files for example front and back panels. Note front-panel is either for SMA or BNC connectors.
Trimmer-cap modification for output-skew tuning on PDA
added by Anders Wallin on 2017-10-21 16:34:31.701439
The pulse-distribution amplifier output skew can be tuned close to zero by the addition of a trimmer-cap on the input of the output-buffer. See initial results in Anders' blog http://www.anderswallin.net/2017/09/delay-tuning-with-trimmer-caps/
Initial commit of KiCad designs to the git repo
added by Anders Wallin on 2017-10-21 16:18:41.017320
PDA and FDA designs including kicad schematic, pcb, BOM, and gerbers have been committed to the git repo.
S/N005 phase-noise measurement at 10 MHz
added by Anders Wallin on 2017-08-18 06:38:16.076162
Phase-noise measurements show a flat spur-free phase-noise and AM-noise
floor of -162 dBc/Hz at >100 Hz offset from a 10 MHz carrier.
Measurements at 5 MHz to follow.
See wiki for results.
S/N005 assembled and tested
added by Anders Wallin on 2017-08-16 13:29:13.497624
Amplifier S/N 005 was assembled and tested, housing PDA2017.07 and
Initial phase-noise tests show good performance, similar to the previous generation of the board.
The new PDA2017.07 design using IDT5PB1108 has very fast rise-time (to be measured), possibly a quite low output-impedance (to be fixed?) and a preliminary channel-to-channel output skew of max 250 ps.
Project created on ohwr.org
added by Anders Wallin on 2017-08-12 14:10:11.508425
The project was created on ohwr.org in August 2017.