trying to save money...
saving saving saving.
its cheaper to buy the chip. I build a better circuit, but its more expensive =/
I guess a Zener diode is fair enough for a non critical application.
Thanks everybody.
Good performance would be 5%
The link looks good!
10 cents is cheaper than the 33cents I pay for the Zetez, but the operating temperature of the TL431 is from -25 to +80°C. My applications requirement is from -40°C to +90°C :/
But thanks anyway.
Hi,
I want to build a cheap voltage reference for a circuit. I normally use a ZR431LF1 (Zetex voltage regulator), but I find it quite expensive.
I though about using a Zener diode with a voltage follower, but it might not be reliable over temperature (-40 to +90°C).
How can I build a voltage...
