Gain...

[Phil Hobbs]

LM wrote:

On Sun, 2 Jan 2022 15:04:19 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

High performance front ends, not so much. A couple of CPH3910s, or a
SAV-551+ cascoded with a BFP640, can do things no available IC can
touch, even with no high voltage requirement.
OT: There are no CPH3910s in stock at Digikey. First microcontrollers
and now this.

I have 30k of them in stock.

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

 

[Clifford Heath]

On 31/12/21 11:03 am, John Larkin wrote:

On Thu, 30 Dec 2021 21:34:27 -0000, \"Kevin Aylward\"
kevinRemoveandReplaceATkevinaylward.co.uk> wrote:
Why anyone would use a discrete transistor stage today is indeed a
mystery...

Some of the RF people are ashamed to admit they are selling
transistors. They label the pins RF IN and RF OUT and GROUND.

Sometimes a transistor is just what you need.

TBF most MMICs that have only a Darlington in the signal path also have
an op-amp circuit that controls the bias around the designed operating
current, and may also have impedance matching for the input & output.

Bias stabilisation is worth having on-die because they can
temperature-compensate it using the die temperature.

CH

 

[John S]

On 1/3/2022 2:56 PM, Phil Hobbs wrote:

LM wrote:
On Sun, 2 Jan 2022 15:04:19 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

High performance front ends, not so much.  A couple of CPH3910s, or a
SAV-551+ cascoded with a BFP640, can do things no available IC can
touch, even with no high voltage requirement.
OT: There are no CPH3910s in stock at Digikey. First microcontrollers
and now this.


I have 30k of them in stock.

Cheers

Phil Hobbs

And Mouser has over 1,000 in stock.

 

[LM]

On Wed, 5 Jan 2022 07:52:53 -0600, John S <Sophi.2@invalid.org> wrote:

On 1/3/2022 2:56 PM, Phil Hobbs wrote:
LM wrote:
On Sun, 2 Jan 2022 15:04:19 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

High performance front ends, not so much.  A couple of CPH3910s, or a
SAV-551+ cascoded with a BFP640, can do things no available IC can
touch, even with no high voltage requirement.
OT: There are no CPH3910s in stock at Digikey. First microcontrollers
and now this.


I have 30k of them in stock.

Cheers

Phil Hobbs


And Mouser has over 1,000 in stock.

This comes late but Digikey has them with NSVJ3910SB3T1G name.