ADCMP565BPZ

Overview

The ADCMP565BPZ is a dual ultrafast voltage comparator fabricated on Analog Devices' proprietary XFCB process, housed in a 20-lead PLCC package. It features a typical propagation delay of 300 ps and less than 50 ps overdrive dispersion. The device operates with a positive supply voltage (VCC) of +5.0 V and a negative supply voltage (VEE) of -5.2 V. Input common-mode range spans from -2.0 V to +3.0 V, while the differential input range reaches ±5 V. Outputs are complementary digital signals compatible with ECL 10K/10KH logic families, providing sufficient drive current for 50 Ω transmission lines terminated to -2 V.

Feature Summary

• Ultrafast performance with 300 ps propagation delay and minimal overdrive dispersion.
• Differential latch control enabling tracking, track-and-hold, or sample-and-hold modes.
• Robust input protection with wide common-mode and differential input ranges.
• Complementary outputs fully compatible with ECL 10K and 10KH logic families.

Applications

• High speed instrumentation
• Scope and logic analyzer front ends
• Clock timing recovery
• Automatic test equipment

Procurement Notes

Verify the specific ordering suffix 'BPZ' against the manufacturer's official documentation to confirm the exact temperature range and package variant. Ensure that the procurement specifications align with the required 20-lead PLCC form factor and dual-channel configuration. Cross-reference the part number with the latest datasheet revision to validate all electrical characteristics before finalizing orders.

Selection Notes

Select this component when sub-nanosecond response times and precise timing accuracy are critical. The low overdrive dispersion makes it suitable for applications where signal amplitude varies significantly. Consider the dual-channel architecture if space efficiency is required. Verify that the system can support the necessary dual power supplies and ECL termination requirements for optimal operation.

Part Context

The ADCMP565 series represents high-speed analog comparators designed for demanding signal processing tasks. Built on the XFCB process, these devices offer superior speed and precision compared to standard CMOS comparators. The ADCMP565BPZ specifically denotes the commercial temperature grade version within the 20-lead PLCC package family, serving as a direct replacement for legacy high-speed comparator models.

Replacement Considerations

The ADCMP565 is documented as a replacement for the SPT 9689 model. When substituting, verify pin compatibility and ensure the new design supports the specific ECL output levels and power supply requirements defined in the ADCMP565 datasheet.

FAQ

How does the ADCMP565 handle unused comparator channels?

Unused inputs should not be left floating to prevent oscillation due to high internal gain. The inputs should be kept at least one diode drop apart, and the Latch Enable pins should be configured as described in the application information section.

What is the recommended method for implementing hysteresis?

Hysteresis can be implemented by introducing a differential voltage between the Latch Enable and its complement input. This method provides symmetrical hysteresis around zero that is independent of the output swing.