OPA2614 - who will try it first???
Aug 10, 2004 at 3:05 AM Thread Starter Post #1 of 10

chillysalsa

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Just recieved news of this new opamp with some interesting specs:

LOW INPUT NOISE VOLTAGE: 1.8nV/Hz
HIGH GAIN BANDWIDTH PRODUCT: 290MHz
HIGH OUTPUT CURRENT: 350mA
LOW INPUT OFFSET VOLTAGE: ±0.2mV
SLEW RATE: 135 V/µs
FLEXIBLE SUPPLY RANGE:
Single +5V to +12V Operation
Dual ±2.5V to ±6V Operation
LOW SUPPLY CURRENT: 6.0mA/ch

OPA2614 datasheet.

High bandwidth and slew rate, while delivering 350 mA?
Could it be the ideal opamp for Grado-powering CMoys?
 
Aug 10, 2004 at 4:02 AM Post #2 of 10

Garbz

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350mA could be sufficient to act as a buffer for virtual grounds as well. I've got mine on order
biggrin.gif
 
Sep 28, 2004 at 10:35 PM Post #8 of 10

bg4533

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It has been a bit over a month, has anyone given this a shot yet?

I have one sitting here, but I only have a CMOY at the moment that runs off 1 9V battery and I don't feel like rewiring it. Is it worth soldering onto a browndog and testing or is there no chance it will run at 9V?

I am hoping to find a chip for a Mint like the OPA2132 but with a bit more detail. I don't like the OPA2227 and AD8620. There aren't to many other choices for SOIC chips.
 
Sep 30, 2004 at 12:33 AM Post #9 of 10

AMZ-FX

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I did some quick and dirty noise calculations and it looks to be as quiet as a 5532 or OP275, but capable of more output drive. Should be a good chip for experimentation. It will be most quiet when driven by a low source impedance... as the driving impedance gets to be 4k - 5k or so, it will be noisier than the 5532 or OP275.

regards, Jack
 
Sep 30, 2004 at 1:29 AM Post #10 of 10

Earwax

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Quote:

Originally Posted by bg4533
It has been a bit over a month, has anyone given this a shot yet?

I have one sitting here, but I only have a CMOY at the moment that runs off 1 9V battery and I don't feel like rewiring it. Is it worth soldering onto a browndog and testing or is there no chance it will run at 9V?

I am hoping to find a chip for a Mint like the OPA2132 but with a bit more detail. I don't like the OPA2227 and AD8620. There aren't to many other choices for SOIC chips.



9V should not be a problem, given that it wants a maximum of 12 Volts. But, it's not stable in the usual cmoy circuit. It hasn't even been stable for me in any of the circuits I built while trying to get the 6171 to run.
 

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