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Old 31st December 2008, 07:39 AM   #1
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Default Digital Volme Control

Hye all,Hapy New Year to all of you.

Im looking for volume control IC similar application with DS1666/DS1669.Im unable to find any DS1666 supplier in my country.

Thank in advance.
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Old 3rd January 2009, 09:58 AM   #2
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Hello elnino86,

Try the PGA2310, PGA2311, and PGA2320 from Texas Instruments.

I don't know what your application is exactly, but any digital potentiometer with a LOG taper (or LOG scale) should be okay for an audio application. The PGA series from Texas Instruments is probably one of the best "suited" for audio applicaitons because of their bipolar outputs (when used with dual power supplies) and their very good noise and THD measurements.
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Old 22nd January 2009, 07:25 AM   #3
yangsmm is offline yangsmm  South Korea
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Default Just for pre-amplifier?

If you want to make pre-amplifier with volume controller, then I think it is recommended to use BB's product(PGA2310, PGA2311, Etc). These has different power range so that If you explain the a little information, then you can be recommended one of them.

I'll show you my work. This support the balanced input and output with unbalaned mode. ^^It controlled by remote controller and rotary encoder..Even it is controlled by USB-based PC Software.
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Old 22nd January 2009, 08:19 AM   #4
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Default Re: Just for pre-amplifier?

Quote:
Originally posted by yangsmm
I think it is recommended to use BB's product(PGA2310, PGA2311, Etc).

Recommended by whom? These chips are only for the fans of cheap opamps. DS1666 sounds much better. It's not available in my country either but fortunately DigiKey ship anywhere.
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Old 22nd January 2009, 09:55 AM   #5
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Dun fight. Thanks for advice but i dun think the TI stuff is easy to design.I just need some simple push button and voltage supply.
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Old 23rd January 2009, 06:41 AM   #6
yangsmm is offline yangsmm  South Korea
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Default Re: Re: Just for pre-amplifier?

Quote:
Originally posted by analog_sa



Recommended by whom? These chips are only for the fans of cheap opamps. DS1666 sounds much better. It's not available in my country either but fortunately DigiKey ship anywhere.

Oh, Really? DS1666 is better? Hmm.. I didn't used DS1666 yet, But I'll try. Thansks. ^^
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Old 23rd January 2009, 07:51 AM   #7
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elnino86,

I could possibly send you a few DS1666. What value do you need; 10k, 50k, 100k? DIP or SOIC?

Are there any kind of shipping restrictions from the US to Malaysia that you know of?

I also have some extra boards for a very small and simple PGA2320 volume control. This does require a dual supply though.
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Old 23rd January 2009, 03:50 PM   #8
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Quote:
Originally posted by theAnonymous1
elnino86,

I could possibly send you a few DS1666. What value do you need; 10k, 50k, 100k? DIP or SOIC?

Are there any kind of shipping restrictions from the US to Malaysia that you know of?

I also have some extra boards for a very small and simple PGA2320 volume control. This does require a dual supply though.
hye,im already got the DS1666 order from farnell.


But,it didnt work at my design.I use 2 push button to increase and decrease the volume.can you help me a little bit here?
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Old 23rd January 2009, 10:01 PM   #9
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Quote:
Originally posted by elnino86
can you help me a little bit here?
I don't think so.

I was going to mention that I don't think the DS1666 can even be operated by push buttons. It needs a controller.

The DS1669 uses push buttons, but this is a linear digital pot and not a pseudo log like the DS1666.

Take a look at the DS1802, MAX5486, and MAX5456/7.
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Old 24th January 2009, 08:05 AM   #10
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Quote:
Originally posted by theAnonymous1


I don't think so.
Its ok.


I need 10k.Im already use DS1666.Now i need a pseudo log like DS1669.But i dunno how to interface it.

DS1802 look fine for me but it build with 45k ohm.MAX5486 n MAX5456/MAX5457 only built in SOIC.
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