Burr Brown Chips

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tkingen

tkingen

Djembes Rock
Do the different Burr Brown chips sound different? INA163, INA217, and INA103.
I have a Toft ATC-2 with the INA217 and it seems to have an immediate sound that is quick on transients. Would the other Burr Brown chips provide different flavors?
 
Well they all have very simular sounds with the INA103 probably being the Lowest Noise but it has Input impedance Limits that make in Not ideal for all applications.....

Also all 3 of these Chips have different Pin configurations with the INA217 as a 8 Pin Dip or SOL-16 and the INA103 is a 16 Pin Dip and the INA163 being a SOL-14 and only in Surface mount, so you can not just swap these Chips with another one as they have different Pin numbers and pin assignments are different.....

There are actually no Drop in replacements for the INA217 accept the SSM2017 which is out of Production and obsolete....

So you are pretty much stuck with the Unit they way it is....It is a Pretty nice looking unit from the looks of it though.....


Cheers
 
Minion said:
There are actually no Drop in replacements for the INA217 accept the SSM2017 which is out of Production and obsolete....
Click to expand...

Not to be nit-picky or anything, but there are actually a few:

http://www.analog.com/en/prod/0,,765_1075_SSM2019,00.html

http://www.thatcorp.com/1500desc.html

The most intriguing one of the bunch appears to be the newer THAT corp's 1510 and 1512. They have a pretty interesting comparison chart that shows some similar performances at lower gains, but if you have a look at the specs at the highest gains, the THAT chips are kind of off the charts in terms of their THD specs at the highest gains. ' Might suggest a good performer for ribbons and dynamics. Also higher slew rates accross the board might suggest better transient response.

http://www.thatcorp.com/datashts/AudioPreampComp.pdf
 
chessrock said:
Not to be nit-picky or anything, but there are actually a few:

http://www.analog.com/en/prod/0,,765_1075_SSM2019,00.html

http://www.thatcorp.com/1500desc.html

The most intriguing one of the bunch appears to be the newer THAT corp's 1510 and 1512. They have a pretty interesting comparison chart that shows some similar performances at lower gains, but if you have a look at the specs at the highest gains, the THAT chips are kind of off the charts in terms of their THD specs at the highest gains. ' Might suggest a good performer for ribbons and dynamics. Also higher slew rates accross the board might suggest better transient response.

http://www.thatcorp.com/datashts/AudioPreampComp.pdf
Click to expand...

I'm building a prototype preamp based on the 1510.

Phantom power is a pain.
 
Your Right...I forgot about the THAT 1510 ,It was just that they were saying they were going to release this chip for the last couple years and only just recently are available to the Public....

I don"t think the That 1510 will be a big improovement as the INA217 has nearly the lowest theroetical noise limits possible and any improovement wouldn"t be noticeable to normal ears...but who knows!! it might just blow the INA217 out of the water.....

I think I might try to get a few That 1510 and try them in my DIY INA217 preamps I am building.....

:)
 
Minion said:
I think I might try to get a few That 1510 and try them in my DIY INA217 preamps I am building.....

:)
Click to expand...

Have you got a schematic I could see?
 
apl said:
Have you got a schematic I could see?
Click to expand...


Here is the design I am useing ,It is basicly the datasheet design with a Basic ballanced line driver at the output to create a ballanced output....I am also useing 10K Reverse Log taper pots for Gain Controll.....


In my design I am not useing a OPA137 for DC offset but a Dual TL072 which are much cheaper and I am useing a Dual opamp because it does the DC Offset for 2 Channels..... I have allready designed the 2 channel PCB and etched a couple PCB"s and I am just waiting for some Parts to show up before stuffing the Boards......

Cheers
 

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I'm using the THAT datasheet Fig 4 suggested schematic, except, since it will not be used for line, it'll have 1k input resistors (R1 & R2) and no R9, and I've got the output servo from Fig 3. I'm not gonna balance the output since it'll be a short run to the next thing in the chain.

Have you looked at THAT's InGenius and OutSmarts balanced receivers and transmitters? I'll probably use the InGenius in a line-in later.
 
mshilarious said:
Huh? Why? Strap a voltage tripler on the +15V tap. Regulate, add capacitance, and mix to taste :)
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I'm using a doubler on the 40VAC taps and then regulating down to 48V.

I just expected that there would be something like a ±15V/+48V module readily available.
 
And there's nothing all that interesting or rewarding about building a great power supply.
 
apl said:
I'm using a doubler on the 40VAC taps and then regulating down to 48V.

I just expected that there would be something like a ±15V/+48V module readily available.
Click to expand...

Do you really need to double 40VAC? For a very small load like phantom, that should rectify to plenty of voltage. Remember that to regulate a voltage significantly higher than the output voltage, you have to shed a fair amount of heat.
 
mshilarious said:
Do you really need to double 40VAC? For a very small load like phantom, that should rectify to plenty of voltage. Remember that to regulate a voltage significantly higher than the output voltage, you have to shed a fair amount of heat.
Click to expand...

Here's the schematic I'm using...
 

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mshilarious said:
Oh, I missed those. What is the voltage off the rectifier?
Click to expand...

Well, in the first version everything was screwed up because I was using perfboard that had connections on it I wasn't aware of. I'll be getting the second version together maybe tomorrow, so I'll let you know.
 
Here is the PSU that I use with my Preamps...

It uses the Much Quieter LM317/337 regulators and output Voltage is totally adjustable by simply changeing the Value of one resistor....


:)
 

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