Analog Devices AD9953YSVZ, direct digital synthesizer (DDS) IC, 400 MHz master fclk, 14-bit resolution, 32-bit tuning word, 1.71V–1.96V supply, 48-TQFP Exposed Pad, surface mount, tray.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage | 1.71V ~ 1.96V |
| Operating temperature | -40°C ~ 105°C |
| Tuning word width | 32 b |
| Package | Tray |
| Master fclk | 400 MHz |
| Case | 48-TQFP Exposed Pad |
| Resolution | 14 b |
The AD9953YSVZ is a direct digital synthesizer (DDS) from Analog Devices that integrates a 14-bit DAC on-chip. Its 400 MHz master clock sets the upper limit for the output frequency. The 32-bit tuning word gives sub-Hz frequency resolution at any output frequency within that band.
Core supply is 1.71V to 1.96V — a tight window that demands a regulated 1.8V rail, not a shared 3.3V bus.
The AD9953YSVZ shares the same 48-TQFP package footprint as the AD9952 and AD9954. However, pin compatibility depends on the supply voltage and DAC resolution — the AD9953 has a 14-bit DAC and 1.8V core, while the AD9952 has a 12-bit DAC and the AD9954 has a 14-bit DAC with a 1.8V core. Verify the BOM supply rail and output resolution before substituting.
Both use a 14-bit DAC and 400 MHz master clock. The AD9954 includes an internal clock multiplier and a 32-bit tuning word (same as AD9953). Spurious performance depends on the output frequency and the phase truncation spurs — the AD9954's clock multiplier can introduce additional jitter if not well-filtered. For a direct comparison, the AD9953 is the simpler, lower-jitter choice when a clean external clock is available.