AD6643 is a dual IF receiver with 11-bit, 250 MSPS output data rate. It supports both NSR and non-NSR modes, providing high SNR and dynamic range. It is suitable for applications such as communications and diversity radio.
The AD6643 is an 11‑bit, dual‑channel intermediate‑frequency (IF) receiver designed for multi‑antenna telecommunication systems. It integrates two high‑performance ADCs, a noise‑shaping requantizer (NSR), and a voltage reference in a 9 mm × 9 mm 64‑lead LFCSP package.
Key features include selectable NSR modes for improved SNR, LVDS digital outputs, a single 1.8 V supply, and a 3‑wire SPI interface for configuration and power‑down control.
| Maximum Sample Rate | 250 MSPS |
|---|---|
| Supply Voltage | 1.8 V |
| Power Consumption (200 MSPS) | 706 mW |
| SNR (NSR Enabled, 22 % BW, 90 MHz) | 74.5 dBFS |
The AD6643 can operate at up to 250 MSPS per channel.
The device runs from a single 1.8 V supply (AVDD and DRVDD).
It consumes about 706 mW at 200 MSPS.