The ISL5216 is a quad programmable digital downconverter designed for high dynamic range applications such as cellular basestations where multiple channel processing is required in a small physical space.
The ISL5216 Quad Programmable Digital Downconverter (QPDC) integrates four independent channels that include digital mixers, a 32‑bit carrier NCO, CIC and FIR filters, a resampling stage, Cartesian‑to‑polar conversion and a digital AGC. All parameters are programmable via a 16‑bit microprocessor interface.
The device operates from –40 °C to +85 °C, uses a 2.5 V core and 3.3 V I/O supply, and is offered in a 196‑pin BGA package. It supports both fixed‑point and floating‑point input formats and provides multiple serial data outputs for downstream processing.
| Maximum input sample rate | 95 MSPS |
|---|---|
| Number of channels | 4 |
| Carrier NCO resolution | 32‑bit, >115 dB SFDR |
| AGC gain range | up to 96 dB |
| Internal data path width | 24 bit |
| Core supply voltage | 2.5 V ±0.125 V |
The ISL5216 can accept input samples up to 95 MSPS.
It provides four independently programmable downconverter channels.
The digital AGC offers a gain adjustment range of up to 96 dB.