need an opamp..

jim, students dont have money :)..

can u elaborate pl?

i tried dong calculations and design according to the allen and holberg book, according to baker book, but it does not work...:(

Sure. How much money ya got ?:-)

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

A trivial amount of gain.

...Jim Thompson

Students should do their own homework, otherwise you never learn ;-)

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

Depends on the specs... maybe $5K if completely wrung out over power supply, temperature and process-corner variations.

...Jim Thompson

wrote

holberg

Are you trying to achieve 60dB of gain in just one stage of amplification? I'm certainly no expert on this, but even the theoretical open loop voltage gain of many op-amps (that mere mortals might use) is "only" around 60dB(1,000,000) and that would be only at DC. Any higher frequencies and the gain would rapidly decline as the frequency went up. Even three 20dB stages might be pushing it, depending upon your frequency requirements and funding.

dc-1Hz or more?

martin

Whats the going price for doing something like that?

martin

Oops, I'm thinking of power gain and not voltage gain.

LOL !

Any moment now expect Don Bowey to come along and preach how dBs can only be used for power calculations !

Graham ;-)

CA3130 or 3140 ?

Graham

Correction. They include bipolars.

TLC272 ?

Graham

As you well know, you blatant liar, I have never posted anything which would even imply that I believe such as you allude.

Don ;-)