The boards measure 135mm x 100mm and are very good quality.
Thanks Marra, gutted they are unavailable so have to look for an alternative MM phono stage.
Thanks Marra, gutted they are unavailable so have to look for an alternative MM phono stage.
PM sent
Right, thanks Pavel for the information. They surely looks good.
No chance that you would share the gerbers?
Regards
I thought I read originally that it was called "OPENAMP1" because it was to be an "open" design, released under creative commons license or some such. Was I hallucinating? Am I confusing this with another project?
It is such a nice design, it would be of benefit to many if it was opened up so someone could organize a group buy or something.
Finallllly got my phono stuff from the x ...
I can finally upgrade my implementation of a pre on PMA's PCB to the full OPENAMP1
Oh ...
BUF634
HIGH OUTPUT CURRENT: 250mA
SLEW RATE: 2000V/ms
PIN-SELECTED BANDWIDTH: 30MHz to 180MHz
LOW QUIESCENT CURRENT: 1.5mA (30MHz BW)
WIDE SUPPLY RANGE: ±2.25 to ±18V
INTERNAL CURRENT LIMIT
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................... ±18V
SPEC
Current Output, Continuous ±250 mA
LT1010
20MHz Bandwidth
75V/μs Slew Rate (=75,000V/ms)
Drives ±10V Into 75Ω
5mA Quiescent Current
Drives Capacitive Loads > 1μF
Current and Thermal Limit
Operates from Single Supply ≥ 4.5V
Very Low Distortion Operation
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage ..............................................±22V
Continuous Output Current (Note 2).................. ±150mA
I can finally upgrade my implementation of a pre on PMA's PCB to the full OPENAMP1
Oh ...
BUF634
HIGH OUTPUT CURRENT: 250mA
SLEW RATE: 2000V/ms
PIN-SELECTED BANDWIDTH: 30MHz to 180MHz
LOW QUIESCENT CURRENT: 1.5mA (30MHz BW)
WIDE SUPPLY RANGE: ±2.25 to ±18V
INTERNAL CURRENT LIMIT
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................... ±18V
SPEC
Current Output, Continuous ±250 mA
LT1010
20MHz Bandwidth
75V/μs Slew Rate (=75,000V/ms)
Drives ±10V Into 75Ω
5mA Quiescent Current
Drives Capacitive Loads > 1μF
Current and Thermal Limit
Operates from Single Supply ≥ 4.5V
Very Low Distortion Operation
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage ..............................................±22V
Continuous Output Current (Note 2).................. ±150mA
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To everyone who might be interested, I have added the Gerber files for free download to the Openamp page:
Preamplifier for MM cartridge
You will find it below the assembled PCB photo, together with the pdf documentation. Should be used for personal use, not for business
Preamplifier for MM cartridge
You will find it below the assembled PCB photo, together with the pdf documentation. Should be used for personal use, not for business
Very kind of you Pavel! A big THANK YOU from my side.
Maybe we can gather some interested people for a mini GB of pcb's.
Yepp, I'm in for two boards. Thanks alot Pawel!
Even without the gerbers it would still be an open project. Your decision what to share.
Regards
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