ADCMP572BCPZ-WP

Overview

The ADCMP572BCPZ-WP is an ultrafast single-supply comparator fabricated on Analog Devices' proprietary XFCB3 Silicon Germanium (SiGe) bipolar process. It features CML output drivers and latch inputs, designed for high-speed signal processing applications. The device operates with a single positive supply ranging from 3.1 V to 5.4 V. Key electrical specifications include a typical propagation delay of 150 ps, an equivalent input rise time bandwidth of 8 GHz, and a minimum pulse width capability of 80 ps. It exhibits low overdrive and slew rate dispersion, typically less than 15 ps, and supports deterministic jitter as low as 10 ps.

Feature Summary

• Features CML output drivers capable of directly driving transmission lines terminated between 3.3 V and 5.2 V.
• Includes on-chip 50 Ω termination resistors at both input pins with optional disable capability for high-impedance applications.
• Provides robust input protection against large overdrive without output phase reversal.
• Supports flexible power supply schemes allowing split input/output supplies for wider input ranges.

Applications

• Clock and data signal restoration and level shifting
• Automatic test equipment (ATE)
• High speed instrumentation
• Medical imaging and diagnostics

Procurement Notes

Verify the specific suffix WP indicates tray packaging when sourcing. Confirm the operating temperature range matches the extended industrial specification of -40°C to +125°C. Ensure the design accommodates the required bypassing for VCCI and VCCO supplies to maintain specified jitter performance. Check that the application board layout supports the LFCSP package thermal requirements.

Selection Notes

Select this component for applications requiring ultrafast response times and low jitter in single-supply environments. The CML output interface is suitable for direct connection to 50 Ω transmission lines. Consider the ADCMP573 if RSPECL outputs are preferred instead of CML. Ensure the input signal slew rate meets the minimum requirement of 50 V/μs to prevent oscillation during threshold crossing.

Part Context

This part belongs to the ADCMP572/ADCMP573 family of ultrafast comparators manufactured using SiGe technology. The ADCMP572 variant specifically provides CML outputs, whereas the ADCMP573 offers reduced swing PECL outputs. Both share similar input characteristics and latch functionality but differ in output driver compatibility and termination requirements.

Replacement Considerations

The ADCMP572BCPZ-RL7 and ADCMP572BCPZ-R2 are functionally identical alternatives differing primarily in reel or tape-and-reel packaging formats rather than electrical performance.

FAQ

How is hysteresis configured on the ADCMP572?

Hysteresis is resistor-programmable via the HYS pin. Connecting a resistor from the HYS pin to GND adds hysteresis, while leaving the pin disconnected results in less than 1 mV of hysteresis.

Can the internal input terminations be disabled?

Yes, the 50 Ω on-chip input terminations can be left open by disconnecting the VTP and VTN pins from their respective termination potentials, allowing for high-impedance input configurations.