Digital Volume Contol - CS3318 - MAX5440 - diyAudio
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Old 29th August 2008, 03:33 PM   #1
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Default Digital Volume Contol - CS3318 - MAX5440

Hi all, I'm designing a multi channel volume contol for my 7.1 Power amp. Hoping to use the:

CS3318: http://pdf1.alldatasheet.com/datashe...US/CS3318.html
As master control.

MAX5440: http://datasheets.maxim-ic.com/en/ds/MAX5440.pdf
As balance and indavidual(per 2 channel) volume control.

contolled all with rotary encoders.


Firstly, anyone had any experence with these devices? How do they sound?

Can the CS3318 work well as a preamp? Or do i have to have a seperate stage?

I havnt got a clue on programing a microcontroller to recive grey code and send I2C to the CS3318. Can any one give an example code? I can work with C as i have little knowledge on it and I'm currently learning it. I have a PIC development enviroment and a programmer so i can have a try.

I'll post a block diagram of my idea when I get my scanner installed.

Thanks =].
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Old 29th August 2008, 04:49 PM   #2
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No need to use two chips, the CS3318 can set each channel individually so one chip can do level, individual level offset, balance etc. It's just a matter of setting the individual channels.

On my website you see an example of how this *could* be done. I'm using the SPI interface, but that's not significant.
Audio quality is superb (that's what others tell me too).

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Old 30th August 2008, 05:08 PM   #3
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I would do as janneman suggests, as the crystal device kicks maxims big time when it comes to the figures of distortion etc.

maxim is focus on components for portable devices but not top-end prestanda.

but soldering the crystal ic... uurh.
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Old 30th August 2008, 06:30 PM   #4
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Hmm, sounds like a plan. I'll just use the CS. Not too worried about soldering. I've soldered SSOPs and TSSOPs before quite nicely. But I have no clue on the I2C, I've just got to grips with a PIC blinking an LED :S. Any pointers where to get started?
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Old 31st August 2008, 09:37 AM   #5
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If your PIC has the I2C accessory, using it is pretty straightforward. There's an I2C tutorial here: http://www.winpicprog.co.uk/pic_tutorial.htm
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Old 8th June 2011, 01:36 PM   #6
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I am looking for kits for such volume control solutions - not a completly preamplifier or integrated amplifier kit, but only the volume control part include remote control transmitter/receiver.
Who can post several proposals?
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