AD9257 is a 14-bit, 40/65 MS/s, serial LVDS, 1.8 V analog-to-digital converter produced by Analog Devices.
The AD9257 is an octal, 14‑bit analog‑to‑digital converter designed for low cost, low power (55 mW per channel at 65 MSPS) and small‑size applications. It operates from a single 1.8 V supply and provides serial LVDS (ANSI‑644) output with optional reduced‑signal mode.
Typical applications include medical imaging, portable ultrasound, quadrature radio receivers, optical networking and test equipment. The device features programmable clock and data alignment, built‑in test pattern generation, and individual channel power‑down for power‑saving designs.
| Maximum Sample Rate | 40/65 MSPS |
|---|---|
| Power per Channel (65 MSPS) | 55 mW |
| Input Voltage Range | 2 V p‑p differential |
| Signal‑to‑Noise Ratio | 75.5 dB |
| Spurious‑Free Dynamic Range | 91.6 dBc |
| Supply Voltage | 1.8 V (AVDD, DRVDD) |
| Analog Input Bandwidth (full power) | 650 MHz |
The AD9257 operates from a single 1.8 V supply for both AVDD and DRVDD.
The device provides a full‑power analog bandwidth of 650 MHz.
The default serial output is LVDS (ANSI‑644) with an optional low‑power reduced‑signal mode.
Each channel consumes about 55 mW at 65 MSPS.