ADCMP562BRQ

Overview

The ADCMP562BRQ is a dual high-speed PECL 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, internal latch pull-up resistors, and robust input protection. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Features differential PECL-compatible outputs fully compatible with PECL 10K and 10KH logic families.
• Includes a separate programmable hysteresis pin for noise immunity adjustment.
• Supports tracking, track-and-hold, or sample-and-hold modes via differential latch inputs.
• Provides sufficient drive current to directly drive transmission lines terminated in 50 Ω.

Applications

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

Procurement Notes

Verify the specific suffix 'RQ' against the manufacturer's ordering guide to confirm package type and tape/reel specifications. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the operating voltage conditions match the datasheet specifications before integration.

Selection Notes

Select this model when a dedicated programmable hysteresis feature is required, distinguishing it from the ADCMP561 variant. Consider the 20-lead QSOP package dimensions for PCB layout constraints. Evaluate the 700 ps propagation delay against system timing budgets to ensure adequate performance margins.

Part Context

This component belongs to the ADCMP561/ADCMP562 series of dual high-speed comparators. Both devices share similar electrical characteristics but differ in packaging and additional features like programmable hysteresis. They are designed for applications requiring precise timing and high-speed signal processing capabilities.

Replacement Considerations

The ADCMP561BRQ serves as a functional substitute if programmable hysteresis is not required. Verify pin compatibility between the 16-lead and 20-lead packages before replacement.

FAQ

How is hysteresis configured on the ADCMP562?

Hysteresis is generated through the programmable HYS pin by connecting a resistor to ground or using a current source, creating symmetrical hysteresis independent of output swing.

What happens if the Latch Enable inputs are left unconnected?

If left unconnected, the internal pull-ups set the latch in tracking mode, allowing the output to follow the input changes continuously.