The AD6633 is a multichannel digital upconverter with VersaCREST™ crest reduction engine. It features 4 or 6 wideband digital upconverter channels and a VersaCREST crest reduction engine that reduces demands on external power amplifiers.
The AD6633 is a multichannel, wide‑bandwidth digital upconverter (DUC) that processes 20‑bit complex baseband input data and generates 18‑bit real or complex IF output up to 125 MS/s. It includes a VersaCREST crest‑reduction engine that lowers power‑amplifier demands, making it suitable for cellular base stations, broadband wireless access, and software‑defined radios.
Each channel provides a 32‑bit NCO, programmable RAM coefficient FIR filters, a fifth‑order CIC filter, and optional half‑band FIR stages. The device operates from a 3.3 V I/O supply and a 1.8 V core supply, with typical power consumption of 75 mW per channel (1.4 W total). Control registers are programmed via a generic 16‑bit microprocessor interface or SPI/SPORT‑compatible serial port.
| Number of channels | 4 or 6 |
|---|---|
| Input port resolution | 20‑bit complex |
| Output port resolution | 18‑bit |
| Typical power consumption | 75 mW per channel, 1.4 W total |
| Supply voltages | 3.3 V I/O, 1.8 V core |
The AD6633 is available with either 4 or 6 wideband digital upconverter channels.
It has a single 20‑bit complex input port (I, Q interleaved).
The device uses a 3.3 V I/O supply and a 1.8 V core supply.
Typical power consumption is 75 mW per channel, about 1.4 W for the whole device.