AN7060 Unobtanium issues... Want to find similar to drive Darlington Power ICs - diyAudio
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Old 27th September 2012, 06:59 PM   #1
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Default AN7060 Unobtanium issues... Want to find similar to drive Darlington Power ICs

I am trying to find a chip that functions similar to AN7060 or AN7062... Used to drive output stage easily -see pic... ( stuff in dotted line is in power IC)

Have seen ICs in late model amps that do a similar thing, though I can't think of their part numbers
Click the image to open in full size.

Regards Baily
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Old 28th September 2012, 10:58 AM   #2
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Quote:
Originally Posted by SVI2004A View Post
I am trying to find a chip that functions similar to AN7060 or AN7062... Used to drive output stage easily -see pic... ( stuff in dotted line is in power IC)

Have seen ICs in late model amps that do a similar thing, though I can't think of their part numbers
Click the image to open in full size.

Regards Baily
The LME49810?
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Old 28th September 2012, 11:12 AM   #3
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Cool... I will look into that one
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Old 28th September 2012, 12:46 PM   #4
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LM4702 is a dual driver, LME49811, LME49810 mono driver with Baker Clamp, LME49830 for MOSFETs. Linear Tech LT1166.
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Old 29th September 2012, 11:43 PM   #5
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Yep, quite bit about the LME49811 and National's other parts on this forum. They're often overkill, though---driving the bias string with a typical op amp on +-15V rails provides sufficient swing for about 88% of listeners.
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Old 30th September 2012, 07:30 AM   #6
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I have a pair of original AN7060. They are in a working amplifier pcb i removed from a junked out phillips stereo system. As it goes the amplifier dosnt sound too bad at all.
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Old 30th September 2012, 08:13 AM   #7
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Old 1st October 2012, 04:33 PM   #8
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The output ICs I will be driving are SVI2003A SVI2004A and STK2058IV

Resistor values mostly were denoted on the SMD resistors... The 820 ohm one is a thermistor.
These are stereo power amplifier ICs... Pins in ( ) are 2nd channel

Click the image to open in full size.

I am thinking of running with the LM4702.

I am curious about source and sinking aspect... As voltages in pins 1(16) and 5(12) at idle are +/-1.8v.

I reckon it should work. But would like to hear from those that have used these before or know of anything I overlooked.

Cheers
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