XOPA818--2.7 GHz FET op amp with 2.2 nV 1-Hz noise

P

Phil Hobbs

Guest
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT

Decompensated, gain >=7, but pretty cool.

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
 
On 7/26/19 9:31 PM, Phil Hobbs wrote:
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT

Decompensated, gain >=7, but pretty cool.

Cheers

Phil Hobbs
Click to expand...
It's cheaper than I thought it was going to be; I guessed 15 bucks in
singles.
 
On Friday, July 26, 2019 at 9:31:38 PM UTC-4, Phil Hobbs wrote:
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT
Click to expand...
That page sucked..(wanted info)
here's the product page.
https://www.ti.com/store/ti/en/p/product/?p=XOPA818IDRGT
I think.
GH
Decompensated, gain >=7, but pretty cool.

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
Click to expand...
 
On a sunny day (Fri, 26 Jul 2019 22:18:43 -0400) it happened bitrex
<user@example.net> wrote in <7wO_E.77403$7s1.37738@fx44.iad>:

On 7/26/19 9:31 PM, Phil Hobbs wrote:
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT

Decompensated, gain >=7, but pretty cool.

Cheers

Phil Hobbs

It's cheaper than I thought it was going to be; I guessed 15 bucks in
singles.
Click to expand...

For a gain of 10 it is dead above 20 MHz?
Use a tranny
;-)
 
On 27.07.19 2:31 AM, Phil Hobbs wrote:
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT

Decompensated, gain >=7, but pretty cool.
Click to expand...

Yep; cf. Win's x-chapters thread. Current consumption is a bit on the
high end though, as to be expected given the specs.

They mention it using SiGe in the datasheet; I wonder what the
technology distribution is across fast op-amps.

Have you tried some samples yet?

– David
 
On 7/29/19 8:56 AM, David Nadlinger wrote:
On 27.07.19 2:31 AM, Phil Hobbs wrote:
https://samples.ti.com/store/samples/en/p/product/?p=XOPA818IDRGT

Decompensated, gain >=7, but pretty cool.

Yep; cf. Win's x-chapters thread. Current consumption is a bit on the
high end though, as to be expected given the specs.

They mention it using SiGe in the datasheet; I wonder what the
technology distribution is across fast op-amps.

Have you tried some samples yet?

 – David
Click to expand...

Not yet. They're going into a fast, low noise VCA for that
cathodoluminescence product. It needs a fair amount of gain at up to 40
MHz, so an OPA818 with a series RC from the SJ to ground is the
ticket--that'll stabilize it at unity gain, and the corner frequency can
be up around 350 MHz where I don't care about the noise very much.

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
 
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