ISL5314INZ

Overview

The ISL5314INZ is a complete direct digital synthesizer (DDS) system integrated into a single 48-lead LQFP package. It features a 48-bit programmable carrier numerically controlled oscillator (NCO) and a high-speed 14-bit digital-to-analog converter (DAC). The device accepts 48-bit center and offset frequency control information via a parallel processor interface, which includes an 8-bit write-only data input, a 4-bit address bus, Write Strobe, and Write Enable signals. Simultaneous register updates are achieved by loading master registers and asserting the UPDATE pin. Additionally, a 40-bit frequency tuning word can be loaded via an asynchronous serial interface.

Feature Summary

• Integrates a 48-bit NCO and 14-bit DAC for standalone DDS functionality
• Supports simultaneous register updates through master/slave register architecture
• Provides external modulation control via dedicated phase and offset pins

Applications

• Programmable local oscillator generation
• FSK and PSK modulation implementation
• Direct digital synthesis signal generation
• Precision clock generation

Procurement Notes

Verify the specific suffix INZ to confirm lead-free compliance and RoHS status against the manufacturer's current documentation. Ensure the 48-lead LQFP package dimensions match the target PCB footprint requirements. Confirm that the parallel and serial interface voltage levels are compatible with the host processor logic family before integration.

Selection Notes

Select this component when a complete DDS solution is required within a single IC to minimize board space. It is suitable for designs needing precise frequency control via parallel or serial interfaces. Consider the 48-bit NCO resolution for frequency accuracy requirements. Verify that the external modulation pin configuration meets the specific phase and offset control needs of the application.

Part Context

The ISL5314 belongs to the Intersil/Renesas DDS product line, designed for high-performance signal generation. It combines digital synthesis capabilities with analog conversion in a compact form factor. This integration reduces the component count typically required for discrete DDS implementations, offering a streamlined solution for frequency synthesis applications.

Replacement Considerations

Check for updated Renesas part numbers replacing legacy Intersil designations. Verify pin compatibility if substituting with other DDS devices from the same family. Ensure functional equivalence regarding NCO bit width and DAC resolution for critical signal integrity.