High voltage High gain OP AMP ?

[Cuda]

Hello,

I would like find an OP AMP to use in this amp but with more voltage rails

Do you know an High voltage and High gain OP AMP ?

Thanks a lot !!

[pacificblue]

http://focus.ti.com/paramsearch/docs...ODE_STRY_PGE_T

[Cuda]

These amps are only 40dB at 20kH

[CBS240]

Bootstrap the power supply rails.

Example...

[janneman]

Originally Posted by Cuda

Hello,

I would like find an OP AMP to use in this amp but with more voltage rails

Do you know an High voltage and High gain OP AMP ?

Thanks a lot !!

You can just supply the opamp from +/-12 or 15V and the rest of the amp of a higher voltage. Just make sure the transistor max voltage is not exceeded.

jd

[Cuda]

In fact I have two 2*24V transformer

[Cuda]

Originally Posted by janneman

You can just supply the opamp from +/-12 or 15V and the rest of the amp of a higher voltage. Just make sure the transistor max voltage is not exceeded.

jd

I have OPA627 and 637 witch support 18V rail

[soekris]

The LME49810 Power amplifier driver....

Can be used as regular opamp, with 70db gain @ 10 Khz.

Søren

[hitsware]

http://focus.ti.com/docs/prod/folders/print/opa454.html

[cbdb]

You can just supply the opamp from +/-12 or 15V and the rest of the amp of a higher voltage. Just make sure the transistor max voltage is not exceeded.

Do the stages after the OPamp have enough gain? Or does the OPamp output need to reach close to rail voltages?