The AD9629 is a 12-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8V analog-to-digital converter. It features 1.8V analog supply operation, 1.8V to 3.3V output supply, high signal-to-noise ratio, and high spurious-free dynamic range. Additionally, it offers low power consumption, differential input, built-in voltage reference, and sample-and-hold circuit.
The AD9629 is a monolithic, single‑channel 12‑bit ADC that operates from a 1.8 V analog supply and supports a separate 1.8 V‑3.3 V digital output driver supply. It offers sample rates of 20, 40, 65, and 80 MSPS, a 2 V p‑p differential input range, and a 700 MHz analog input bandwidth, making it suitable for communications, radar, medical imaging, and portable instruments.
The datasheet provides full electrical specifications, pin descriptions, timing diagrams, power‑down modes, and design guidelines such as separate analog/digital supplies, exposed‑paddle grounding, and recommended low‑jitter clock sources. Ordering information and package dimensions for the 32‑lead LFCSP are also included.
| Sample Rate | 20‑80 MSPS |
|---|---|
| Input Voltage Range | 2 V p‑p differential |
| Signal‑to‑Noise Ratio at 200 MHz | 69 dBFS |
| Effective Number of Bits at 200 MHz | 11 Bits |
| Operating Temperature Range | -40 °C to +85 °C |
It operates from a single 1.8 V analog supply and a separate 1.8 V to 3.3 V digital output driver supply.
The device supports up to 80 MSPS, with selectable rates of 20, 40, 65, and 80 MSPS.