ADCMP564BRQZ

Overview

The ADCMP564BRQZ is a dual high-speed ECL comparator fabricated on Analog Devices' proprietary XFCB process. It features a 700 ps propagation delay with less than 75 ps overdrive dispersion. The device includes differential latch control for tracking, track-and-hold, or sample-and-hold modes. Outputs are complementary digital signals compatible with ECL 10 K and 10 KH logic families, capable of driving 50 Ω transmission lines terminated to −2 V. A key differentiator is the separate programmable hysteresis pin. It operates within an industrial temperature range of −40°C to +85°C.

Feature Summary

• Features a separate programmable hysteresis pin for noise immunity in noisy environments.
• Provides differential latch control enabling tracking, track-and-hold, or sample-and-hold operation modes.
• Outputs are fully compatible with ECL 10 K and 10 KH logic families.
• Includes internal latch pull-up resistors that default the latch to tracking mode when inputs are left open.

Applications

• Automatic test equipment
• High speed instrumentation
• Scope and logic analyzer front ends
• Window comparators
• Clock drivers

Procurement Notes

Verify the specific BRQZ suffix indicates the 20-lead QSOP package variant. Confirm the part number matches the ADCMP564 model which includes the dedicated programmable hysteresis functionality distinct from the ADCMP563. Ensure the supply chain documentation aligns with the Rev. D datasheet specifications for electrical characteristics and thermal resistance values.

Selection Notes

Select this component when programmable hysteresis is required to prevent output oscillation in noisy signal conditions. It is suitable for applications needing consistent propagation delay across varying input overdrive levels. Consider the 20-lead QSOP package constraints for PCB layout. Verify compatibility with ECL logic families if interfacing directly with existing systems.

Part Context

This device belongs to the ADCMP56x series of high-speed comparators manufactured using the XFCB process. It shares core performance metrics like propagation delay and common-mode range with the ADCMP563 but distinguishes itself through the inclusion of dedicated hysteresis control pins. This series targets demanding timing applications requiring precise signal recovery and threshold detection.

Replacement Considerations

The ADCMP563 serves as a functional substitute if programmable hysteresis is not required, though it utilizes a 16-lead package instead of the 20-lead configuration.