Publication

Hybrid NRZ/Multi-Tone Serial Data Transceiver for Multi-Drop Memory Interfaces

Yusuf Leblebici
2015
Journal Articles

Abstract

A 7.5 Gb/s mixed NRZ/multi-tone transceiver for multi-drop bus (MDB) memory interfaces is designed and fabricated in 40 nm CMOS technology. Reducing the complexity of the equalization circuitry on the receiver (RX) side, the proposed architecture achieves 1 pJ/bit link efficiency for a MDB channel with 45 dB loss at 2.5 GHz. The transmitted spectrum is composed of baseband (BB) and I /Q sub-bands with the ability to match the modulation frequency of the entire transceiver (TRX) with respect to the channel response over a +/- 25% range. A switched-capacitor-based mixer/filter is developed to efficiently down convert and equalize the I /Q sub-bands in the RX. The core size area is 85 x 60 um2 and 150 x 60 um2 for the TX and RX, respectively.

Official source

https://infoscience.epfl.ch/entities/publication/ff45f8a2-e926-42ea-97bf-2fb9ed23a68f

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Yusuf Leblebici
2015
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ff45f8a2-e926-42ea-97bf-2fb9ed23a68f

About this result

Related concepts (32)

Frequency modulation

Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing. In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the instantaneous frequency deviation, i.e. the difference between the frequency of the carrier and its center frequency, has a functional relation to the modulating signal amplitude.

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted. For example, the modulation signal might be an audio signal representing sound from a microphone, a video signal representing moving images from a video camera, or a digital signal representing a sequence of binary digits, a bitstream from a computer.

Transceiver

In radio communication, a transceiver is an electronic device which is a combination of a radio transmitter and a receiver, hence the name. It can both transmit and receive radio waves using an antenna, for communication purposes. These two related functions are often combined in a single device to reduce manufacturing costs. The term is also used for other devices which can both transmit and receive through a communications channel, such as optical transceivers which transmit and receive light in optical fiber systems, and bus transceivers which transmit and receive digital data in computer data buses.

Related publications (1)

Hybrid NRZ/Multi-Tone Serial Data Transceiver for Multi-Drop Memory Interfaces

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