Opamp - Phonostage

[MaccAu]

I have on me LME49860 and OPA1642. The 22v would that be too much for the OPA1612? The JEFT transistors are very low noise 0.7vn, not the old 4560 though

An externally hosted image should be here but it was not working when we last tested it.

thank you

sam

 

[scott wurcer]

I have on me LME49860 and OPA1642. The 22v would that be too much for the OPA1612? The JEFT transistors are very low noise 0.7vn, not the old 4560 though



thank you

sam

In general the FET/op-amp composites can have good performance. Don't know about the supplies but watch out for compensation with different op-amps.

 

[PRR]

..22v would that be too much for the OPA1612?...

Maybe the data sheet tells you that limit.

 

[nigelwright7557]

Maybe the data sheet tells you that limit.

+ and - 18 volts DC max.

 

[MaccAu]

Thanks Scott, PRR and Nigel

Not much choice, AD8599 +15v, LME49860 max 22v so i think the LME49860 will do, i have room the bipolars in the signal path can be film caps like CDE 940c or other sorts, anything is better than the old opamp