ADCMP581BCP-R2

Overview

The ADCMP581BCP-R2 is an ultrafast voltage comparator fabricated on Analog Devices' proprietary XFCB3 Silicon Germanium (SiGe) bipolar process. It features reduced swing ECL (negative ECL) output drivers designed to directly drive 400 mV into 50 Ω transmission lines terminated to −2 V. The device provides a propagation delay of 180 ps and supports 10 Gbps operation with 200 fs random jitter. It operates with ±5 V power supplies, enabling a wide input range from −2 V to +3 V. Key specifications include 100 ps minimum pulse width, 37 ps typical output rise/fall time, and overdrive dispersion typically less than 15 ps.

Feature Summary

• Features reduced swing ECL output drivers for direct interfacing with negative ECL logic levels.
• Includes on-chip 50 Ω termination resistors at both input pins with optional open configuration.
• Provides resistor-programmable hysteresis and differential latch control capabilities.
• Offers high power supply rejection exceeding 70 dB for stable operation.

Applications

• Automatic test equipment (ATE)
• High speed instrumentation
• Medical imaging and diagnostics
• Clock and data signal restoration

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure that the required ±5 V supply rails and appropriate termination voltages are available in the target design. Confirm compatibility with the 16-lead LFCSP footprint during PCB layout planning.

Selection Notes

Select this component when low propagation delay and minimal jitter are critical requirements. The NECL output stage is suitable for systems requiring negative ECL signaling. Consider the ADCMP580 or ADCMP582 if CML or PECL outputs are preferred instead. Evaluate thermal management needs due to the compact LFCSP package.

Part Context

This part belongs to the ADCMP580/ADCMP581/ADCMP582 family of ultrafast SiGe voltage comparators. While all three share identical input characteristics and propagation delays, they differ exclusively in their output driver types: CML, NECL, and PECL respectively. This specific model utilizes the NECL output architecture.

Replacement Considerations

The ADCMP580BCP-R2 and ADCMP582BCP-R2 are confirmed substitutes within the same family, differing only in output interface type.