AD9951YSVZ

Overview

The AD9951YSVZ is a direct digital synthesizer (DDS) featuring an integrated 14-bit DAC operating at up to 400 MSPS. It generates frequency-agile analog output sinusoidal waveforms 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 a PLL REFCLK multiplier ranging from 4× to 20×. It operates on a 1.8 V supply with 3.3 V or 1.8 V I/O logic levels and is housed in a 48-lead TQFP/EP package rated for temperatures between −40°C and +105°C.

Feature Summary

• Integrated 14-bit high-speed DAC with complementary current outputs referenced to AVDD
• On-chip crystal oscillator and programmable PLL multiplier for flexible clocking
• Serial I/O port supporting standard synchronous protocols with read/write register access
• Hardware and software controlled power-down modes for optimized energy consumption

Applications

• Agile local oscillator frequency synthesis
• Programmable clock generators
• Test and measurement equipment
• Acousto-optic device drivers

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure DVDD_I/O voltage requirements match the system design before procurement. Confirm availability through authorized distributors as stock levels fluctuate.

Selection Notes

Select this component when a high-speed DDS with integrated DAC is required for agile frequency generation. Verify that the 400 MSPS internal clock speed meets the Nyquist requirements for the target output frequencies. Ensure the 14-bit resolution provides sufficient dynamic range for the application's spurious-free needs.

Part Context

The AD9951 belongs to the AgileRF family of direct digital synthesizers from Analog Devices. It shares architectural similarities with other members like the AD9952 and AD9953 but offers specific performance characteristics tailored for high-frequency synthesis applications requiring fast frequency hopping capabilities.

Replacement Considerations

Direct pin-compatible alternatives within the same series include the AD9952YSVZ and AD9953YSVZ. Verify functional equivalence regarding clock speeds and DAC resolution before substitution.