MAT-04/CA3046 Characterization

[patchell]

Tim Ressel wrote:

> Yo,
>
> I just completed the characterization run. Here are the results:
>
> Chamber MAT-04  MAT-04  CA3046
> Temp            Temp            Voltage Voltage
> 39.9            39.9            .5451           .6892
> 45.0            44.8            .5338           .6803
> 49.9            49.6            .5227           .6715
> 55.0            54.7            .5111           .6624
> 60.0            59.5            .4999           .6535
>
> PS Voltage: 9.98V
> Bias resistor: 10.0K 1%
>
> As you can see, the MAT-04 voltage is way different than the CA3046. This info
> is useful for setting the bridge voltage on the AN-299 heater scheme. For
> example, if you wanted the MAT-04 to run at 40C, you would select a voltage
> divider pair to yield .5451 volts, or close to it at least. The stock circuit
> yielded 0.6273V.
>
> Next I am going to run the AN299 circuit with the MAT-04 over temperature to see
> how it does. Unfortunately, when I rigged the circuit in the chamber it didn't
> work. I somehow blew the MAT-04. The spare is working okay. After I glue the
> thermocouple to the back of the new MAT-04 I will begin the next run.
>
> Tim Ressel--Compliance Engineer
> Hewlett-Packard
> Verifone Division
> 916-630-2541
> tim_r1 at verifone.com

    What I found more interesting was the CA3046 give you about 1.8mV/C and the
MAT04 give you 2.3mV/C.

Food for thought.

    Thanks for the data.

    -Jim

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