Catalog
Dual High Speed ECL Comparator 20 - Lead QSOP
Key Features
• Differential ECL-compatible outputs
• 700 ps propagation delay input to output
• 75 ps propagation delay dispersion
• Input common-mode range: –2.0 V to +3.0 V
• Robust input protection
• Differential latch control
• Internal latch pull-up resistors
• Power supply rejection greater than 85 dB
• 700 ps minimum pulse width
• 1.5 GHz equivalent input rise time bandwidth
• Typical output rise/fall time of 500 ps
• ESD protection > 4kV HBM, >200V MM
• Programmable hysteresis
Description
AI
TheADCMP563/ADCMP564 are high speed comparators fabricated on Analog Devices’ proprietary XFCB process. The devices feature a 700 ps propagation delay with less than 75 ps overdrive dispersion. Dispersion, a measure of the difference in propagation delay under differing overdrive conditions, is a particularly important characteristic of high speed comparators. A separate programmable hysteresis pin is available on the ADCMP564.A differential input stage permits consistent propagation delay with a wide variety of signals in the common-mode range from −2.0 V to +3.0 V. Outputs are complementary digital signals that are fully compatible with ECL 10 K and 10 KH logic families. The outputs provide sufficient drive current to directly drive transmission lines terminated in 50 Ω to −2 V. A latch input, which is included, 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 ADCMP563/ADCMP564 are specified over the industrial temperature range (−40°C to +85°C).ApplicationsAutomatic test equipmentHigh speed instrumentationScope and logic analyzer front endsWindow comparatorsHigh speed line receiversThreshold detectionPeak detectionHigh speed triggersPatient diagnosticsHand-held test instrumentsZero crossing detectorsLine receivers and signal restorationClock drivers
