Line and receiver interface circuit for high-speed voice-band modems |
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Abstract: | A single-chip implementation of the analog signal processing functions required for full-duplex voice-band modem operation over twisted pair wires is described. Echo path signal-to-signal harmonic distortion plus noise exceeds 65 dB. The device is implemented in a 3.5-/spl mu/m twin-tub CMOS process, and typically dissipates 180 mW. |
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