AD9901KPZ

Overview

The AD9901KPZ is a digital phase/frequency discriminator from Analog Devices, designed for high-speed signal comparison up to 200 MHz. It utilizes a trench-oxide isolated process to provide a linear detection range without indeterminate phase zones. The device operates on a single +5 V supply for TTL/CMOS compatibility or a –5.2 V supply for ECL inputs. Key electrical characteristics include a peak-to-peak output voltage swing of 1.6 V to 2.0 V and a typical supply current of 43.5 mA to 54.0 mA at +25°C. It features open-collector outputs with adjustable current via an external resistor.

Feature Summary

• Linear transfer function free of dead zones
• Compatible with ECL, TTL, and CMOS logic levels
• Open-collector outputs with programmable current range
• Direct phase/frequency comparison up to 200 MHz

Applications

• Low phase noise reference loops
• Fast-tuning agile IF loops
• Secure hopping communications systems
• Coherent radar transmitter/receiver chains

Procurement Notes

Verify the specific package designation associated with the KPZ suffix against the manufacturer's official ordering guide. Confirm that the component meets the required commercial temperature range specifications (0°C to +70°C) for the intended application environment before procurement.

Selection Notes

Select this component when a digital phase detector with high linearity and no dead zone is required for frequencies up to 200 MHz. Ensure the system design accommodates the necessary supply voltages (+5 V for TTL/CMOS or –5.2 V for ECL) and provides adequate thermal management given the nominal power dissipation of approximately 218 mW.

Part Context

The AD9901 series includes variants such as the AD9901KQ in a 14-lead ceramic DIP and the AD9901KP in a 20-lead PLCC. These devices serve as core components in phase-locked loop architectures, offering superior locking speed compared to traditional discriminators while maintaining the phase stability typically associated with analog mixers.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative phase/frequency discriminators based on input frequency limits, logic compatibility, and package footprint requirements.