[time-nuts] A look inside the DS3231

[ASSI]

[blast from the past…]

Attila Kinali writes:
> My guess would be that it's a PN-junction or a bandgap temperature
> sensor somewhere on the chip. Adding another part increases the cost
> of production quite considerably.

The die micrograph shows one clearly identifiable classical 8:1 bandgap
circuit in 3x3 configuration in the lower left corner of the die plus
three more instances of bipolar transistors (3x3, 3x2 and 4x2
configuration) that might be used as additional temperature
compensation.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

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