AD9859YSVZ-REEL7

Overview

The AD9859YSVZ-REEL7 is a direct digital synthesizer (DDS) featuring an integrated 10-bit DAC operating at up to 400 MSPS. It generates frequency-agile analog output sinusoidal waveforms at up to 200 MHz using advanced DDS technology and a 32-bit tuning word for fine resolution. The device supports serial I/O control, software/hardware power-down modes, and multichip synchronization. It operates on a 1.8 V supply with 3.3 V or 1.8 V I/O levels, housed in a 48-lead TQFP/EP package.

Feature Summary

• Integrated 10-bit current-output DAC with differential outputs
• PLL REFCLK multiplier supporting 4x to 20x multiplication
• On-chip crystal oscillator capability with external drive support
• Shaped On-Off Keying (OSK) and amplitude ramp rate control

Applications

• Agile LO frequency synthesis
• Programmable clock generators
• Test and measurement equipment
• Commercial and amateur radio exciters

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging rather than tray distribution. Confirm DVDD_I/O voltage requirements match the target system logic levels, as the component supports both 1.8 V and 3.3 V interfaces. Ensure the ordering quantity aligns with reel specifications provided by the manufacturer.

Selection Notes

Select this component when high-speed frequency agility and low phase noise are required. The internal PLL allows flexibility with reference clocks ranging from 4 MHz to 100 MHz depending on the multiplication factor. Verify that the application can accommodate the 48-lead TQFP/EP package dimensions and thermal dissipation requirements.

Part Context

This part belongs to the Analog Devices AD9859 family of direct digital synthesizers. It is designed for applications requiring precise frequency generation and fast hopping capabilities. The YSVZ designation typically denotes lead-free and RoHS-compliant manufacturing within the standard TQFP/EP form factor.

Replacement Considerations

Check for AD9859ASV or AD9859BCPZ equivalents if different temperature grades or packaging formats are needed. Ensure any substitute maintains the 400 MSPS clock speed and 10-bit DAC resolution to preserve dynamic performance specifications.