AD9956YCPZ-REEL7

Overview

The AD9956YCPZ-REEL7 is a direct digital synthesizer (DDS) integrated with a phase-locked loop (PLL) circuit, packaged in a 48-lead LFCSP. It features an internal DDS clock speed of 400 MSPS and a 14-bit DAC. The device supports a 48-bit frequency tuning word for fine resolution and includes an RF divider capable of handling inputs up to 2.7 GHz. It operates on a 1.8 V analog/digital supply and a 3.3 V I/O supply, functioning within an extended temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-speed DDS core with a 14-bit DAC and a programmable PLL section for agile frequency synthesis.
• Includes an RF divider supporting input frequencies up to 2.7 GHz and a CML-mode PECL-compliant driver output.
• Provides software-controlled power-down modes and automatic linear frequency sweeping capabilities.

Applications

• Agile LO frequency synthesis
• FM chirp source for radar and scanning systems
• Automotive radars
• Test and measurement equipment

Procurement Notes

Verify the component against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure that the 48-lead LFCSP package thermal requirements are met during integration. Confirm that the serial interface voltage levels match the system design before implementation.

Selection Notes

Select this component when a combined DDS and PLL solution is required for generating precise, frequency-agile signals. Consider the 48-bit tuning word for applications demanding high spectral purity and fast hopping speeds. Verify that the operating temperature range meets the environmental constraints of the target deployment.

Part Context

This part belongs to the AD9956 series of AgileRF synthesizers from Analog Devices. It is designed to replace older discrete solutions by integrating the DDS, PLL, and RF divider into a single chip. The REEL7 suffix indicates it is supplied in a tape and reel format suitable for automated surface-mount assembly processes.

Replacement Considerations

Check the AD9956 datasheet for any listed alternative part numbers or updated revisions. Ensure that any substitute maintains the same 48-lead LFCSP footprint and electrical characteristics to avoid redesigning the PCB layout.