Fast amp for driving multiple T/Hs...

[Clifford Heath]

On 5/9/20 12:20 am, Phil Hobbs wrote:

Turns out the EL5167 + SAV-581 approach with a FIN1002 and 1PS10SB82
Schottky driving the gate works very well--the aperture time is well
under 100 ps.  The FIN1002 has a fall time of 170 ps, and it only has to
slew a volt or so to turn off the pHEMT.


Signal   |\\ EL5167ICZ
0--------|-\\
         |  >-*------*-----*    *----------------*--0  Sampled output
      *--|+/  |      |   S |    | D              |
      |  |/   |      R     --t-----             CCC
      |       |      R       |                  CCC
      *--RRRR-*      R 1k    |                   |
        402          |       |      30k         GND
                     *--|<|--*--*--RRRR-+5
                     1N4148     |
                                |
                                |
             /                  |
__r----    _/          FIN1002  |
                     |\\         |
0-----RRRR---*-------|-\\        |
      50     |       |  >--|<|--*
            CCC  Vt--|+/   1PS10SB82
       200p CCC      |/
             |
            GND

How well does that fast CFB EL5167ICZ work with that positive feedback?

 

[Phil Hobbs]

On 2020-09-06 18:24, Clifford Heath wrote:

On 5/9/20 12:20 am, Phil Hobbs wrote:
Turns out the EL5167 + SAV-581 approach with a FIN1002 and 1PS10SB82
Schottky driving the gate works very well--the aperture time is well
under 100 ps.  The FIN1002 has a fall time of 170 ps, and it only has
to slew a volt or so to turn off the pHEMT.


Signal   |\\ EL5167ICZ
0--------|-\\
          |  >-*------*-----*    *----------------*--0  Sampled output
       *--|+/  |      |   S |    | D              |
       |  |/   |      R     --t-----             CCC
       |       |      R       |                  CCC
       *--RRRR-*      R 1k    |                   |
         402          |       |      30k         GND
                      *--|<|--*--*--RRRR-+5
                      1N4148     |
                                 |
                                 |
              /                  |
__r----    _/          FIN1002  |
                      |\\         |
0-----RRRR---*-------|-\\        |
       50     |       |  >--|<|--*
             CCC  Vt--|+/   1PS10SB82
        200p CCC      |/
              |
             GND

How well does that fast CFB EL5167ICZ  work with that positive feedback?

Yo\' momma.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com