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Temperature measurement and 4052 analog MUX

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amrstaha

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analog mux 4052

Does anyone know how temperature signal coming from a thermocuple or RTD is converted to digital in commercial temperature controllers?
I opened several commercial temperature controllers to find no ADC nor a uC with ADC but only an anlog MUX (4051 and 4052) and one or two op-amps. The precision of the temperature measured is usually 0.1 degree C.
 

4052 mux how to

02 Jan 2006 21:17 Temperature measurement and 4052 analog MUX
 

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