# Amplifier circuit design for temperature sensor

#### Lee Pierre

Joined Dec 13, 2015
4
Temperature sensor produces an output
Vs= (43.2mv)T'C + 750mv
This express in term of temperature versus sensor voltage (vs)
T=(vs-0.75)/0.0432'C

To design using combination of inverting, non inverting and summing amplifier togather with 1V reference voltage source .
The sensor voltage Vs and 1v ref source Vref are two input signal of the circuit. Design circuit should produce an output voltage Vo to indicate the temperature according to equation Vo= T/10.('C/10)
When T=0'C , Vo =0v
T=100'C , Vo = 10v .

This is my home work. Thks

#### AnalogKid

Joined Aug 1, 2013
8,224
Since this is *your* homework, show us what you have done so far and we'l give you some feedback. Post a block diagram or schematic to show your circuit plan, and explain how it should work.

ak

#### Lee Pierre

Joined Dec 13, 2015
4
Since this is *your* homework, show us what you have done so far and we'l give you some feedback. Post a block diagram or schematic to show your circuit plan, and explain how it should work.

ak
I calculate base on the data sheet 1by 1 for finding resistor value...the part i dun get it is we need to calculated the Vs to find resistor value? Or get the error value less then 5%...?

#### Dodgydave

Joined Jun 22, 2012
8,575
If its homework, why didn't you post in the Homework section?