eBay

On offer are a number of individually priced NEW old stock (NOS) AD9951YSV Direct Digital Synthesis (DDS) chips by Analog Devices.

The AD9951 is a direct digital synthesizer (DDS) featuring a 14-bit DAC operating up to 400 MSPS. The AD9951 coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 200 MHz. The AD9951 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9951 via a serial I/O port. These chips are non-RoHS with the following specifications (check AD9951 Datasheet for details) :

  • 200MHz max output frequency
  • 14 bit DAC @ 400 MSPS internal clock rate max
  • 32 bits frequency control tuning
  • Phase noise ≤ –120 dBc/Hz @ 1 kHz offset (DAC output)
  • Dynamic > 80 dB SFDR @ 160 MHz (±100 kHz offset) Aout
  • 4x ~ 20x programmable Reference Clock Multiplier
  • 1.8V Power Supply
  • Serial I/O Control

You may find wonderful app notes and on-line design tool, ADISIMDDS, for this DDS synthesizer from manufacturer's site. Searching on the internet will certainly give you numerious AD995x based projects on

  • Local Oscillator (LO) frequency synthesis
  • Precise programmable clock generator
  • RF Sweep / Signal Generator
  • Spectrum Analyzer (SA) or Vector Network Analyzer (VNA)

Item is eligible for combined shipment to save shipping cost.

The chip will be sent out via registered mail service with tracking number provided.

Notes: There is a metal pad on the chip base which is conventionally soldered to a copper PCB groundplane. The chip runs hot and this is where most heat flows to keep it running safely so be aware.