Hello All,
I am trying to replace some basic switchgear with a homemade Bluetooth controller circuit. The Bluetooth module I have is connected via UART to a microcontroller and the switches I want to control should then be activated from individual digital output pins on the microcontroller.
The problem I am having is selecting the hardware to do the switching that is controlled from the digital output pins of the microcontroller, essentially I'm looking for a voltage controlled switch.
Relays have the perfect electrical characteristics but I would like to keep the physical profile small as well.
I like the idea of using a 4066 bi-lateral switch chip but the R-on seems rather high for a switch (125ohm) and I don't like the idea of messing with the impedance of the connected system too much, as I would like to keep my retro-fit as close to the characteristics of the original switches that I am replacing.
Some sort of on-chip solid-state relay sounds like a good option but I was wondering if there were any other options that I could consider?
Any suggestions are appreciated.
Thank you.
I am trying to replace some basic switchgear with a homemade Bluetooth controller circuit. The Bluetooth module I have is connected via UART to a microcontroller and the switches I want to control should then be activated from individual digital output pins on the microcontroller.
The problem I am having is selecting the hardware to do the switching that is controlled from the digital output pins of the microcontroller, essentially I'm looking for a voltage controlled switch.
Relays have the perfect electrical characteristics but I would like to keep the physical profile small as well.
I like the idea of using a 4066 bi-lateral switch chip but the R-on seems rather high for a switch (125ohm) and I don't like the idea of messing with the impedance of the connected system too much, as I would like to keep my retro-fit as close to the characteristics of the original switches that I am replacing.
Some sort of on-chip solid-state relay sounds like a good option but I was wondering if there were any other options that I could consider?
Any suggestions are appreciated.
Thank you.