ADCMP581BCPZ-R2

Overview

The ADCMP581BCPZ-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 terminated lines referenced to −2 V. The device offers a propagation delay of 180 ps, 100 ps minimum pulse width, and 200 fs random jitter, supporting 10 Gbps operation. It operates with ±5 V supplies, providing a wide −2 V to +3 V input range. Key features include on-chip 50 Ω input terminations, resistor-programmable hysteresis, differential latch control, and power supply rejection exceeding 70 dB.

Feature Summary

• Features reduced swing negative ECL output drivers for direct interfacing with standard transmission line loads.
• Incorporates on-chip 50 Ω termination resistors at both analog input pins for impedance matching.
• Includes differential latch inputs with internal termination for signal acquisition and holding capabilities.
• Provides resistor-programmable hysteresis via the HYS control pin to prevent output oscillation.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package and reel specifications. Confirm compatibility with the intended logic family, as this model utilizes negative ECL outputs distinct from CML or PECL variants within the same product family. Ensure proper bypassing capacitors are included in the design to support the specified high-speed performance characteristics.

Selection Notes

Select this component when negative ECL signaling is required alongside ultrafast response times. It is suitable for applications demanding low deterministic jitter and minimal propagation delay dispersion. Consider the ADCMP580 or ADCMP582 if CML or PECL output levels are preferred instead of the NECL configuration provided by this part.

Part Context

This device belongs to the ADCMP580/ADCMP581/ADCMP582 family of ultrafast SiGe voltage comparators. While all three share identical input characteristics and processing technology, they differ exclusively in their output driver stages. The ADCMP581 specifically provides the negative ECL interface, distinguishing it from the CML-based ADCMP580 and the PECL-based ADCMP582.

Replacement Considerations

Public confirmed substitute part numbers: ADCMP580BCPZ-R2, ADCMP582BCPZ-R2.