AD9901KPZ-REEL

Overview

The AD9901KPZ-REEL is a digital phase/frequency discriminator manufactured by Analog Devices Inc. It operates with a single +5 V supply for TTL/CMOS compatibility or a –5.2 V supply for ECL inputs. The device features open-collector outputs and a linear transfer function free of indeterminate phase detection zones. It supports input frequencies up to 200 MHz, providing locking speed comparable to traditional discriminators while maintaining the phase stability of analog mixers. The component is designed for commercial temperature ranges (0°C to +70°C) and utilizes trench-oxide isolation technology.

Feature Summary

• Digital phase/frequency discrimination with linear transfer function
• Compatible with ECL, TTL, and CMOS logic levels
• Open-collector outputs with adjustable current via external resistor
• No dead zone in phase detection range

Applications

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

Procurement Notes

Verify that the specific ordering suffix corresponds to the PLCC package variant as indicated in the manufacturer's ordering guide. Confirm the commercial temperature range specification matches the application requirements. Ensure the datasheet revision aligns with the intended design implementation.

Selection Notes

Select this component when direct comparison of phase/frequency inputs at standard IF frequencies is required without prescalers. It is suitable for designs needing to eliminate excessive phase uncertainty common in standard PLL configurations. Consider the power dissipation limits and thermal impedance characteristics for the plastic package during selection.

Part Context

The AD9901 series includes variants such as the AD9901KQ (Ceramic DIP) and AD9901TE/883 (Military). The KPZ designation indicates the Plastic Leaded Chip Carrier package option within the commercial temperature range family. Other models may offer MIL-STD-883 compliance for harsh environment applications.

Replacement Considerations

Direct replacements include other AD9901 variants like the AD9901KQ for DIP packaging or military-grade versions if environmental ratings differ. Verify pinout compatibility between PLCC and alternative packages before substitution.