All,
In the datasheet for the REF3212 under absolute maximums it mentions an operating temperature of -55 to +135C, but everywhere else on the website and in the beginning of the datasheet mentions a temperature range of -40 to +125C. Can you clarify on which is correct?
Reagan,
There is an essential difference between operating and specified temperature range; operating temperature range of -55C to 135C means only that the part will function as intended (look like a voltage reference) BUT the max/min datasheet (PDS) specifications may NOT be met; in the case of specified temperature range of -40C to 125C, all the PDS specs over temperature should be met.
BTW, operating REF3212 above 135C or below -55C may cause a permanent damage to IC - see below note (1) while exposure to absolute maximum rated conditions for an extended period of time may degrade the device performance and shorten its functional life.
Marek,
On this device, instead of seeing the 1.25V +/- 0.0025V output, we're seeing some results up to 1.4-1.42V @ -41C. Per your answers above, this doesn't seem like it should be happening. What would your thoughts be here?
The test scenario is with a simple breadboard setup with the schematic below, and per the datasheet requirements, a rise time of 5000V/s on the input voltage. That last note is per the <2ms rise time requirement mentioned in the datasheet for when IN and EN are tied together.
