AD9643 is a 14-bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V dual analog-to-digital converter (ADC)
The AD9643 is a dual, 14‑bit analog‑to‑digital converter designed for communications and broadband data applications. It operates from a single 1.8 V supply with a separate digital output driver supply and offers sampling speeds up to 250 MSPS.
The document includes detailed specifications such as resolution, input range, power consumption, and signal‑to‑noise performance, as well as pin configurations, timing diagrams, and design guidelines for PCB layout and power delivery.
| Resolution | 14 bits |
|---|---|
| Maximum Sample Rate | 250 MSPS |
| Input Voltage Range | 1.75 V p‑p full‑scale |
| Total Power Consumption (250 MSPS) | 785 mW |
| Signal‑to‑Noise Ratio (SNR) | 70.6 dBFS at 185 MHz |
| Spurious‑Free Dynamic Range (SFDR) | 85 dBc at 185 MHz |
It operates from a single 1.8 V analog supply and a separate 1.8 V digital output driver supply.
The AD9643 can sample at rates up to 250 MSPS.
Configuration and control are performed via a 3‑wire SPI‑compatible serial interface.
The device is available in a 64‑lead Lead Frame Chip Scale Package (LFCSP).