Patent ID: 8578434

Claim:
An integrated cable modem, comprising: a common substrate; a down-stream path for down-converting a downstream signal to a down-converted signal, said down-stream path including: a direct down conversion circuit configured to down-convert said downstream signal to provide a plurality of down-converted components, a multiplexer configured to interleave said plurality of down-converted components into a single data stream at a first rate, a single analog-to-digital converter (ADC) configured to convert said single data stream from an analog representation to a digital representation to provide a single digitized intermediate frequency (IF) signal, a de-multiplexer configured to de-interleave said single digitized IF signal into a plurality of data streams at said first rate, and a demodulator circuit configured to: receive said plurality of data streams, and provide a plurality of digital outputs based on said plurality of data streams; and an upstream path including a power amplifier for producing an upstream signal, wherein said down-stream path, said ADC, and said upstream path are disposed on said common substrate, and wherein said common substrate is mounted within a semiconductor package.