OP AMP query

[Raghu]

Hi folks:

I am very new to this group. Can anybody tell me some opamp with a
noise figure of 3 nv/sqrt-Hz. any manufactures...

regards

Raghu

 

[clicliclic]

raghu_mallya@yahoo.co.in (Raghu) wrote in message news:<9f6c7bef.0411162212.32149502@posting.google.com>...

Hi folks:

I am very new to this group. Can anybody tell me some opamp with a
noise figure of 3 nv/sqrt-Hz. any manufactures...

regards

Raghu

How about these Linear Technology products:
LT1028: 1nV/Hz^(1/2), 50MHz, 11V/us, 5V/uV, unstable as follower
LT1128: 1nV/Hz^(1/2), 12MHz, 5V/us, 5V/uV, stable as follower

Other Linear products: LT1007 (2.5nV/Hz^(1/2)), LT1115; some Analog
products: AD797/622, SSM2015/2016/2017/2019, MAT02/03;
Burr-Brown/Texas: INA103/163/217; an obsolete Harris/Intersil
product: HA-5101 (3nV/Hz^(1/2)).

Some may be worse than 3nV/Hz^(1/2).

Martin.

 

[Glenn Gundlach]

clicliclic@freenet.de (clicliclic) wrote in message news:<8b226cfb.0411171044.62ec8f2a@posting.google.com>...

raghu_mallya@yahoo.co.in (Raghu) wrote in message news:<9f6c7bef.0411162212.32149502@posting.google.com>...
Hi folks:

I am very new to this group. Can anybody tell me some opamp with a
noise figure of 3 nv/sqrt-Hz. any manufactures...

regards

Raghu

How about these Linear Technology products:
LT1028: 1nV/Hz^(1/2), 50MHz, 11V/us, 5V/uV, unstable as follower
LT1128: 1nV/Hz^(1/2), 12MHz, 5V/us, 5V/uV, stable as follower

Other Linear products: LT1007 (2.5nV/Hz^(1/2)), LT1115; some Analog
products: AD797/622, SSM2015/2016/2017/2019, MAT02/03;
Burr-Brown/Texas: INA103/163/217; an obsolete Harris/Intersil
product: HA-5101 (3nV/Hz^(1/2)).

Some may be worse than 3nV/Hz^(1/2).

Martin.

Analog Devices--everything they make <3nV/Hz^(1/2)

http://www.analog.com/dynamic/parametric/scResultsDisplay.asp?SearchType=PSS&ProductLine=OPA

Try and National Semi in addition to what Martin said.
GG

 

[clicliclic]

stratus46@yahoo.com (Glenn Gundlach) wrote in message news:<acb22b57.0411172153.5829f7b7@posting.google.com>...

clicliclic@freenet.de (clicliclic) wrote in message news:<8b226cfb.0411171044.62ec8f2a@posting.google.com>...
raghu_mallya@yahoo.co.in (Raghu) wrote in message news:<9f6c7bef.0411162212.32149502@posting.google.com>...
Hi folks:

I am very new to this group. Can anybody tell me some opamp with a
noise figure of 3 nv/sqrt-Hz. any manufactures...

regards

Raghu

How about these Linear Technology products:
LT1028: 1nV/Hz^(1/2), 50MHz, 11V/us, 5V/uV, unstable as follower
LT1128: 1nV/Hz^(1/2), 12MHz, 5V/us, 5V/uV, stable as follower

Other Linear products: LT1007 (2.5nV/Hz^(1/2)), LT1115; some Analog
products: AD797/622, SSM2015/2016/2017/2019, MAT02/03;
Burr-Brown/Texas: INA103/163/217; an obsolete Harris/Intersil
product: HA-5101 (3nV/Hz^(1/2)).

Some may be worse than 3nV/Hz^(1/2).

Martin.

Analog Devices--everything they make <3nV/Hz^(1/2)

http://www.analog.com/dynamic/parametric/scResultsDisplay.asp?SearchType=PSS&ProductLine=OPA

Try and National Semi in addition to what Martin said.
GG

.... if you don't want to pay much: the Analog Devices OP-27GP comes
close (3.2nV/Hz^(1/2), 8MHz, 2.8V/us, 1.5V/uV) and may be had for USD
2.00. The OP-37GP is faster, but unstable at unity gain.

Martin.