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Slow edge rates on ADIS16480 SYNC pin

Question asked by tlbtlbtlb on Feb 26, 2015
Latest reply on Feb 26, 2015 by NevadaMark

I use the DIO2 pin on the ADIS16480 to indicate new data available. The edge rate on that pin is surprisingly slow: about 3 uS transition time.

 

In the scope trace below, blue is the DIO2 pin and yellow is the SPI SCK pin. Everything is working OK: the edge is triggering my AVR32 MCU to initiate a bunch of SPI reads to get the gyro data, and it triggers it reliably at 2.46 kHz. I just worry that the slow edge rate means that something is wrong, and it will cause multiple interrupts in a noisy environment.

 

Is the slow edge rate intentional? Configurable?

 

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