ADCMP551

    The ADCMP551/ADCMP552/ADCMP553 are single supply, high speed comparators fabricated on Analog Devices proprietary XFCB process. The devices feature a 750 ps  propagation delay with less than 150 ps overdrive dispersion. Dispersion, a measure of the difference in propagation delay under differing overdrive conditions, is a particularly important haracteristic of high speed comparators. A separate programmable hysteresis pin is available on the ADCMP552. 

    A differential input stage of ADCMP551 permits consistent propagation delay with a common-mode range from 0.2 V to VCCI 2.0 V. Outputs are complementary digital signals are fully compatible with PECL 10 K and 10 KH logic families. The outputs provide sufficient drive current to directly drive transmission lines terminated in 50 Ω to VCCO − 2 V. A latch input is included and permits tracking, track-and-hold, or sample-and-hold modes of operation. The latch input pins contain internal pull ups that set the latch in tracking mode when left open. 

    The ADCMP551/ADCMP552/ADCMP553 are specified over the 40°C to +85°C industrial temperature range. The  ADCMP551 is available in a 16-lead QSOP package; the ADCMP552 is available in a 20-lead QSOP package; and the  ADCMP553 is available in an 8-lead MSOP package.