AD9953YSVZ-REEL7

Overview

The AD9953YSVZ-REEL7 is a direct digital synthesizer (DDS) featuring a 14-bit DAC operating up to 400 MSPS. It generates frequency-agile analog output sinusoidal waveforms at up to 200 MHz. The device includes an integrated 1024 × 32 static RAM for flexible frequency sweep capability and provides fast frequency hopping with 32-bit tuning word resolution. It operates on a 1.8 V power supply with 3.3 V I/O logic, housed in a 48-lead TQFP/EP package, and supports extended industrial temperature ranges from -40°C to +105°C.

Feature Summary

• Integrated 1024 × 32 static RAM supporting flexible frequency sweep modes
• PLL REFCLK multiplier providing 4× to 20× multiplication capabilities
• On-chip oscillator driven by a single crystal or external reference clock input
• Multichip synchronization via SYNC_IN and SYNC_CLK pins

Applications

• Agile VHF/UHF LO frequency synthesis
• FM chirp source for radar and scanning systems
• Nonlinear-shaped PSK/FSK modulator
• Test and measurement equipment

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing components. Confirm that the DVDD_I/O pin is powered to 3.3 V while AVDD and DVDD remain at 1.8 V during operation. Ensure proper termination of DAC outputs to AVDD rather than AGND to maintain compliance range and prevent distortion.

Selection Notes

Select this component for applications requiring high-speed frequency agility and precise phase control. The 14-bit resolution and 400 MSPS clock speed support wideband signal generation. Consider the 48-lead TQFP/EP package for thermal management and board space constraints. Verify compatibility with existing serial interface protocols such as SPI or SSR.

Part Context

The AD9953 belongs to Analog Devices' DDS family, offering integrated waveform generation without external mixers. It replaces discrete synthesizer solutions by combining a phase accumulator, lookup table, and DAC in a single CMOS chip. The YSVZ-REEL7 variant specifically denotes the industrial temperature grade and reel packaging format.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.