This document describes the features and characteristics of the 12-bit, 125/105 MSPS, 1.8 V dual analog-to-digital converter AD9628.
The AD9628 is a monolithic, dual‑channel, 12‑bit analog‑to‑digital converter capable of 125 MSPS (or 105 MSPS) operation with a single 1.8 V analog supply. It features a high‑performance sample‑and‑hold circuit, on‑chip voltage reference, and selectable digital test pattern generation, making it suitable for communications, radar, medical imaging, and portable instruments.
This handbook provides detailed specifications, functional block diagrams, pin configurations, timing parameters, and power consumption data. It also includes application guidance, typical performance curves, and information on the serial SPI interface for configuration and testing.
| Maximum Sample Rate | 125 MSPS (105 MSPS option) |
|---|---|
| Supply Voltage | 1.8 V (AVDD and DRVDD) |
| Power Consumption (DC input) | 129 mW (105 MSPS) / 148 mW (125 MSPS) |
| Signal‑to‑Noise Ratio (SNR) | 71.2 dBFS @ 70 MHz |
| Spurious‑Free Dynamic Range (SFDR) | 93 dBc @ 70 MHz |
| Analog Input Bandwidth | 650 MHz |
| Input Capacitance | 5 pF |
The AD9628 operates from a single 1.8 V analog power supply.
Both 1.8 V CMOS and LVDS output logic levels are supported.
It can sample at up to 125 MSPS (or 105 MSPS in a lower‑speed mode).
Yes, it includes built‑in selectable digital test pattern generation.