ADCMP582BCPZ-RL7

Overview

The ADCMP582BCPZ-RL7 is an ultrafast voltage comparator fabricated on the XFCB3 Silicon Germanium (SiGe) bipolar process. It features reduced swing PECL output drivers designed to directly drive 400 mV into 50 Ω transmission lines terminated to VCCO − 2 V. The device operates with ±5 V power supplies, providing a wide input range from −2 V to +3 V. Key specifications include a propagation delay of 180 ps, a minimum pulse width of 100 ps, and 200 fs random jitter. It incorporates on-chip 50 Ω input terminations, resistor-programmable hysteresis, and differential latch control.

Feature Summary

• Features reduced swing PECL output drivers for direct interfacing with high-speed logic families.
• Incorporates internal 50 Ω termination resistors at both analog input pins for impedance matching.
• Provides high-speed latch functionality with programmable hysteresis via an external resistor.
• Supports differential latch inputs terminated to an independent VTT pin.

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 RL7 corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the PECL output stage aligns with the system's logic level requirements, specifically the need for termination to VCCO − 2 V. Ensure supply voltages match the specified ±5 V rails for optimal performance.

Selection Notes

Select this component when PECL signaling is required rather than CML or NECL outputs found in other family members. Consider the 16-lead LFCSP package constraints for thermal management and layout density. Evaluate the necessity of the integrated latch feature against external timing requirements to optimize board space and design complexity.

Part Context

This part belongs to the ADCMP580/ADCMP581/ADCMP582 family of ultrafast comparators manufactured using Analog Devices' proprietary XFCB3 SiGe process. While the ADCMP580 provides CML outputs and the ADCMP581 offers NECL outputs, the ADCMP582 is distinguished by its PECL output stage, completing the series for various high-speed interface standards.

Replacement Considerations

Direct functional replacements within the same package and specification profile are limited due to the unique PECL output driver. The ADCMP580BCPZ-RL7 and ADCMP581BCPZ-RL7 share identical electrical characteristics except for their respective CML and NECL output stages, requiring careful evaluation of downstream logic compatibility before substitution.

FAQ

How is the latch feature disabled on the ADCMP582?

To disable the latch, connect the LE pin to VEE with an external 750 Ω resistor and leave the LE pin connected to the VTT potential (VCCO − 2 V).

What is the recommended termination for the VTT pin?

For the ADCMP582, the VTT pin must be connected externally to VCCO − 2 V, preferably using a dedicated low inductance plane.