[sdiy] Audio quality switch chips??

[Tom Bugs]

Switching POST summing resistor is always going to be a risky (noisy) 
approach! Partly because it'll no doubt mean you have 
longer-than-necessary traces on the virtual ground.

On 25/09/2014 10:53, Rutger Vlek wrote:
> +1 for the DG range.
>
> I'm using DG408, DG412, DG413 and DG419 switches and like them. For input selection I use them between an input resistor and the inverting input of an inverting amplifier circuit. Works well. The only thing I've noticed in this configuration is a bit of sensitivity to power supply quality. Perhaps this is less of an issue when using it in a configuration where higher voltages are switched.
>
> Best,
>
> Rutger
>
>
>
> On 25 sep 2014, at 11:09, Tom Bugs wrote:
>
>> By the way - shop around for best prices of DG chips.. there is a LARGE range..
>> For example: DG408 can be had for sub 40p from Future Electronics, whereas they're about double from Mouser
>>
>>
>> On 25/09/2014 04:34, The Old Crow wrote:
>>> I've used DG508/9 for a long time for both audio and DC switching.  They'll run fine at +/-12 or 15v with the control inputs still responding to logic levels.  I've used DG2xx, 4xx as well.  Cost is significantly higher, but they're worth it. --Crow
>>>
>>> /**/
>>>
>>> On 9/24/2014 4:29 PM, Dan Snazelle wrote:
>>>> I've tried the 4053 (from plus and minus 7.5 v supplies) and was quite unimpressed with the end result.
>>>>
>>>> Even with attenuation it had a noticeable impact on the sound quality
>>>>
>>>> So...I'm looking for advice from people on a high quality CMOS style chip ( logic levels don't matter) that can handle audio up to +/10v audio)
>>>>
>>>>
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