Futterama
Member
Hello forum,
Can you please advise me on either, how to make a voltage reference using a zener diode (Philips BZV55 voltage reference diode), or how to use the Zetex ZR431 zener shunt regulator as a voltage reference.
I need a voltage reference to measure when the supply voltage (battery supply) reaches a certain voltage. I'm using a PIC with ADC and need a voltage reference for it. My battery supply can vary from 4V to around 10V (different number of cells being used).
I have access to both the BZV55 and the ZR431 and I have played around with both of them, and I just can't get a stable reference voltage.
I would like the reference voltage to be 2.5V with the ZR431 and any value below 4V for the zener (I have different zener voltages to choose from).
A circuit diagram would be much appreciated.
Thanks.
Regards,
Futterama
Can you please advise me on either, how to make a voltage reference using a zener diode (Philips BZV55 voltage reference diode), or how to use the Zetex ZR431 zener shunt regulator as a voltage reference.
I need a voltage reference to measure when the supply voltage (battery supply) reaches a certain voltage. I'm using a PIC with ADC and need a voltage reference for it. My battery supply can vary from 4V to around 10V (different number of cells being used).
I have access to both the BZV55 and the ZR431 and I have played around with both of them, and I just can't get a stable reference voltage.
I would like the reference voltage to be 2.5V with the ZR431 and any value below 4V for the zener (I have different zener voltages to choose from).
A circuit diagram would be much appreciated.
Thanks.
Regards,
Futterama