ADCMP561BRQZ

Overview

The ADCMP561BRQZ is a dual high-speed PECL comparator fabricated on Analog Devices' proprietary XFCB process. It features a 700 ps typical propagation delay with less than 75 ps overdrive dispersion. The device operates within an input common-mode range of -2.0 V to +3.0 V and provides differential PECL-compatible outputs compatible with PECL 10K/10KH logic families. It includes internal latch pull-up resistors, robust input protection, and power supply rejection greater than 85 dB. The component supports tracking, track-and-hold, or sample-and-hold modes via latch inputs.

Feature Summary

• Differential PECL-compatible outputs providing sufficient drive current for direct transmission line driving
• Low propagation delay dispersion ensuring consistent timing accuracy across varying overdrive conditions
• Differential latch control enabling flexible operation in tracking, track-and-hold, or sample-and-hold modes
• Robust input protection and high power supply rejection ratio exceeding 85 dB

Applications

• Automatic test equipment
• High speed instrumentation
• Scope and logic analyzer front ends
• Window comparators
• High speed line receivers

Procurement Notes

Verify the specific ordering suffix BRQZ corresponds to the 16-lead QSOP package option when sourcing. Confirm that the procurement channel accepts the standard industrial temperature range specifications (-40°C to +85°C). Ensure compatibility with the required dual-supply voltage configuration (+5.0 V and -5.2 V) during the acquisition phase.

Selection Notes

Select this component for applications requiring precise timing recovery and low dispersion characteristics. The ADCMP561BRQZ is suitable for designs needing differential PECL outputs without programmable hysteresis, which is exclusive to the ADCMP562 variant. Consider the 16-lead QSOP footprint constraints and the necessity for proper ground plane implementation to optimize high-speed performance.

Part Context

The ADCMP561BRQZ belongs to the ADCMP561/ADCMP562 family of dual high-speed comparators manufactured by Analog Devices. These devices utilize the proprietary XFCB process technology to achieve superior speed and low dispersion metrics compared to standard bipolar comparators. The BRQZ designation identifies the specific commercial-grade version packaged in a 16-lead shrink small outline package.

Replacement Considerations

The ADCMP562BRQZ serves as a functional substitute within the same family, offering identical core performance but including an additional programmable hysteresis pin. Designers must account for the 20-lead QSOP physical footprint difference when substituting.