[sdiy] Audio quality switch chips??

[Rutger Vlek]

Yes, that's true. On the other hand, it keeps distortion down, as well as the switching noise.

Rutger


On 25 sep 2014, at 11:56, Tom Bugs wrote:

> 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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>> 
> 
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