| | 1 | '''6/11/18''' Laser pulse multiplex |
| | 2 | |
| | 3 | A laser will be triggered at 80 MHz. The optical output will be split and delayed producing a combined optical pulse stream at 160 MHz. They require an analog demux to route alternate pulses from a PMT to two digitizers, with the demux toggling between outputs at 80MHz. |
| | 4 | |
| | 5 | They have already purchased these mini-circuits RF switches: |
| | 6 | |
| | 7 | * https://www.minicircuits.com/pdfs/ZFSWA-2-46.pdf |
| | 8 | * https://www.minicircuits.com/pdfs/ZFSWA-2-46.pdf |
| | 9 | |
| | 10 | And also this PLL eval board: |
| | 11 | |
| | 12 | * http://www.analog.com/media/en/technical-documentation/user-guides/UG-075.pdf |
| | 13 | |
| | 14 | The AD board can provide an 80MHz 50% duty cycle clock with 3.3V CMOS, LVDS or LVPECL outputs. |
| | 15 | |
| | 16 | What is needed is a fast level shifter circuit to drive the enable for the mini-circuits which is -5 to -8V. |
| | 17 | |
| | 18 | Possibly useful parts: |
| | 19 | |
| | 20 | * 74LVC1G53 - analog mux/demux with 1ns switching at 5V. But, control signal is 5V also so no big gain. |
| | 21 | * DPU01M-05 - 12V in, +/-5V out DC/DC converter (isolated) |
| | 22 | * TLV71333 - 3.3V LDO regulator |
| | 23 | * SWI5-12-N-P5 - 12V wall wart |
