AD9877 Datasheet (Analog Devices)

AD9877, Cable Modem

The AD9877 is a single-supply set-top box and cable modem mixed-signal front end.

The device contains a transmit path interpolation filter, complete quadrature digital upconverter, and transmit DAC.

The receive path contains a 12-bit ADC and dual 8-bit ADCs.

All internally required clocks and an out

AD9877 Features

* Low cost 3.3 V CMOS MxFE™ for MCNS-DOCSIS-, DVB-, DAVIC-compliant set-top box and cable modem applications 232 MHz quadrature digital upconverter 12-bit direct IF DAC (TxDAC+®) Up to 65 MHz carrier frequency DDS Programmable sampling clock rates Selectable interpolation filter Analog Tx output level