bahti
Newbie level 1

Hello,
As a school project i am supposed to desing a circuit that has three leds, one will light when it is lower than 20*c, one between 20 and 30 , and one when higher than 30*c. I can use the device AD22100. it has an output voltage equation like :
VOUT = (V+ / 5 V) × [1.375 V +(22.5 mV/°C) × TA]
where v+ is typically 5v and ta is the temperature.
calculations show that 20*c outputs 1.8v and 30*c outputs 2.1v. I can not find a way to detect this voltage intervals.
Do you have any ideas on how to achieve this?. We are allowed to use any components- diodes, zener diodes, ttl gates, mosfets etc.
Thanks,
As a school project i am supposed to desing a circuit that has three leds, one will light when it is lower than 20*c, one between 20 and 30 , and one when higher than 30*c. I can use the device AD22100. it has an output voltage equation like :
VOUT = (V+ / 5 V) × [1.375 V +(22.5 mV/°C) × TA]
where v+ is typically 5v and ta is the temperature.
calculations show that 20*c outputs 1.8v and 30*c outputs 2.1v. I can not find a way to detect this voltage intervals.
Do you have any ideas on how to achieve this?. We are allowed to use any components- diodes, zener diodes, ttl gates, mosfets etc.
Thanks,