Recent trends in 5G and radar systems have revealed the need for high-frequency DACs with minimal spurious emissions. Amplitude and timing errors in the DAC have proven to be a significant hindrance to linearity performance and have an increasing impact with frequency. Primary contributors to these errors are impedance mismatches in the current combining network as well as device mismatches.
The ever-increasing demand for data throughput from both wired and wireless networks is continuously burdening high-speed chip-to-chip links. With proposed processor-memory interface standards exceeding multiple Tb/s of data [1] and leadingedge data converters requiring tens of Gb/s of data, power and area efficient data transfer is of utmost importance. This work focuses on the development of a small, low-power, fully-integrated, clock-less capacitively-coupled data receiver. The architecture utilizes small on-chip termination and coupling capacitors in order to avoid parasitics, impedance discontinuities and density limitations associated with their board-mounted counterparts. The small coupling capacitors transforms non-return to zero data streams into bi-polar return-to-zero pulse trains. The pulses' polarities are digitally latched into the receiver via input bias switches, generating pseudo return-to-zero (PRZ) waveforms that reduces baseline wander and eliminates the need for data encoding or scrambling. A model of the PRZ signal is vii Vita Oct. 2012 -Feb 2016 ….
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