Which multiplexers can i use to switch between two voltages,5 and -9V.I've tried using an analog switch but am supplying it with 5 volts so it cannot switch higher voltages.
I've tried scaling down the voltages but i cannot get the switch to switch negative voltages.
Any help with this regard will be highly appreciated

 

We might be able to help if you tell us why you want to do this.

 

Am using them as reference voltages for an A/DC

 

Am using them as reference voltages for an A/DC

What is the part number of your ADC?

 

Why not use the -9V to power the negative voltage on the mux (CMOS muxes take only microamps of operating current). That would allow you to switch both the +5V and -9V. For example you can power the CD4051/52/53 with Vdd= +5V, Vss = 0V, and Vee= -9V, and then the mux will switch +5V to -9V with a 0-5V logic signal.

What type of ADC takes a negative reference voltage?

 

Dual slope integrating ADC