AD9879 Rev. A is a low cost 3.3 V MxFE™ for DOCSIS-, EURO-DOCSIS-, DVB-, DAVIC-compliant set-top box and cable modem applications.
The AD9879 is a single‑supply mixed‑signal front‑end that integrates a transmit path with a 16× interpolation filter, a 232 MS/s 12‑bit DAC, and a complete quadrature digital upconverter. It also provides a receive path with 12‑bit, 10‑bit, and dual 7‑bit ADCs, supporting DOCSIS, EURO‑DOCSIS, DVB, and DAVIC standards.
The device is supplied in a 100‑lead MQFP package and operates over a commercial temperature range (‑40 °C to +85 °C). Detailed specifications, pin configurations, and design guidelines are provided for PCB layout, power supply, and signal integrity.
| Supply Voltage (VAS) | 3.3 V ±5% |
|---|---|
| Maximum Carrier Frequency | 65 MHz |
| Transmit DAC Resolution | 12 bits |
| Maximum Tx DAC Sample Rate | 232 MS/s |
| ADC Input Frequency Range | up to 70 MHz |
The device can generate carrier frequencies up to 65 MHz.
The transmit DAC provides a 12‑bit resolution.
The AD9879 is specified for –40 °C to +85 °C.
It is available in a 100‑lead MQFP package.