ADCMP580 CML Output interfacing to +2.5V

Hi,

ADCMP580 CML output is from -350mV to 30mV so connecting it to a 2.5V would not be straight forward approach. Pins 9 and 12 are internally connected and can be a digital ground/positive logic supply pin but in the case of ADCMP580 proper termination to gnd with 50 ohms is necessary for proper return.

If you want a comparator with CML output referenced to +V, you can check ADCMP606.

Thank you, I think ADCMP606 is not quite fast enough for me.

Hi,

Have you checked ADCMP572? It is as fast as ADCMP580.

Yes, could work - however i need to change the rest of the system for 3.3V

One additional question could the latch be driver single ended on Le pin if the /Le pin would be biased at mid voltage between Vol and Voh? I see it accepts 0.2V diff

Hi,

Are you referring to ADCMP572 now or still ADCMP580?

Hi,

Are you referring to ADCMP572 now or still ADCMP580?

ADCMP572 and ADCMP580 as both latches are complementary so their behavior should be similar?

Hi,

Yes latches behavior of 572 and 580 are similar.