RadioLocman.com Electronics ru
Advanced Search +
  
Go Back   RadioLocman Forum > Electronics and ... > Electronic Components

Electronic Components Datasheets, aplication data, analogue.

Reply
 
Thread Tools Search this Thread
Old 03-31-2017, 10:18 AM   #1
April155
Junior Member
 
Join Date: Jul 2016
Posts: 4
April155 is on a distinguished road
Default I want to replace multi-deck rotary switches with a microcontroller for my audio and got some problem

Hello,
I want to replace expansive multi-deck rotary switches with a micro-controller and digitally controlled (i2C or ISP) analog switches.

It will be used in a vintage (1972) discreet transistor microphone preamplifier design (Neve 1073).

The original used "noizy" carbon resistors dividers to attenuate signal between stages. I want to keep the signal as "clean" as the original, wich should be easy as far as I understand it.

I wonder if there are any drawbacks in using cheap ICs like the new Vishays DG series Analog switches IC. Distortion? Noise? Etc...

I need to pass low (100mVac) and hi(15Vac) level audio signals through the switches. A ROn of 120Ohms or less is ok (I guess) with this design.

serial communication would be great (I2C or ISP)

I'm not an expenrienced EE and I'm lost among the available choices. I have no experience passing audio signals through this kind of ICs.

My big vintage console is an important selling argument. ICs have a bad reputation among audio enthousiasts so I must be carefull if I break the "discreet rules" as I will need good arguments to convince my clients no harm will be made to their music.

Here is a simplified shematic of the circuit. The divider switches are symbolized by pots. I Hope I gave enough info. Thanks for your insights.

Regards,

April155 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Suggest IC for multi channel Input DRN_231 Projects and Advices 1 07-29-2016 09:08 AM
PIC32 MX795F512L - ADC problem vdurgaidass Microcontrollers (MCU) 1 03-27-2016 11:29 AM
Hooking up LEDs to Switches mark Beginners 2 07-08-2015 05:46 PM
Discussion: Adaptive rotary encoder distinguishes fine from coarse Radiolocman Robot Projects and Advices 1 04-22-2014 04:22 PM
Discussion: Read 10 or more switches using only two I/O pins of a microcontroller Radiolocman Robot Projects and Advices 1 03-17-2014 02:07 PM

All times are GMT. The time now is 05:32 AM.




Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus