The ADCMP563/ADCMP564 are high speed comparatorsfabricated on Analog Devices’ proprietary XFCB process. Thedevices feature a 700 ps propagation delay with less than 75 psoverdrive dispersion. Dispersion, a measure of the difference inpropagation delay under differing overdrive conditions, is a particularlyimportant characteristic of high speed comparators. A separateprogrammable hysteresis pin is available on the ADCMP564.

A differential input stage permits consistent propagation delaywith a wide variety of signals in the common-mode range from−2.0 V to +3.0 V. Outputs are complementary digital signals thatare fully compatible with ECL 10 K and 10 KH logic families.The outputs provide sufficient drive current to directly drivetransmission lines terminated in 50 Ω to −2 V. A latch input,which is included, permits tracking, track-and-hold, or sample-and-holdmodes of operation. The latch input pins contain internalpull-ups that set the latch in tracking mode when left open.

The ADCMP563/ADCMP564 are specified over the industrialtemperature range (−40°C to +85°C).

Applications

• Automatic test equipment
• High speed instrumentation
• Scope and logic analyzer front ends
• Window comparators
• High speed line receivers
• Threshold detection
• Peak detection
• High speed triggers
• Patient diagnostics
• Hand-held test instruments
• Zero crossing detectors
• Line receivers and signal restoration
• Clock drivers

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.