The AD9861 is a mixed-signal front-end baseband transceiver from Analog Devices that supports broadband applications.
The AD9861 is a member of the MxFE family of integrated converters for broadband communications. It combines dual 10‑bit analog‑to‑digital converters and dual 10‑bit digital‑to‑analog converters in a compact 64‑lead LFCSP package (9 mm × 9 mm). The device supports single‑reference clock operation, configurable interpolation (1×, 2×, 4×), and flexible 20‑bit I/O for half‑ and full‑duplex data transfers.
The datasheet provides full specifications for the Tx and Rx paths, power consumption, digital logic levels, timing, absolute maximum ratings, and pin functions. It also lists typical applications such as broadband access, LAN, and modem communications.
| Resolution | 10 bits |
|---|---|
| Maximum DAC Update Rate | 200 MHz |
| Full‑Scale Output Current | 20 mA |
| Input Clock Rate (PLL bypassed) | 200 MHz |
| Analog Supply Voltage Range | 3.6 V |
| Package | 64‑lead LFCSP (9 mm × 9 mm) |
The AD9861 is packaged in a 64‑lead LFCSP with a 9 mm × 9 mm footprint.
The Tx DAC supports 1×, 2×, or 4× interpolation.
The AD9861‑80 can sample at up to 80 MSPS.