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An all-digital 2-tap half-rate time-based decision feedback equalizer (TB-DFE) was demonstrated on a 10mm on-chip serial link. Implemented in a 65nm GP technology, the transmitter and receiver achieve an energy-efficiency of 31.9 and 45.3 fJ/b/mm, respectively, at a data rate of 10Gb/s. A Bit Error Rate (BER) less than 10−12 was verified for an eye width of 0.43 Unit Interval (UI) using an in-situ...
In recent years, the requirement of high-end electronic product is higher signal speed, storage capacity and lower power, the bandwidth of package physical design becomes more critical, such as layer count reduction, package routing density. Therefore, there are many electrical validations in a package design, including PDN (Power Distribution Network) and SSN (Simultaneous Switching Noise). In order...
We demonstrate an optical receiver front-end using a CMOS TIA with a germanium-on-silicon PD. The amplifier only occupies 0.09 mm2 with 12 mW power consumption, and achieves a 27.5 GHz 3-dB bandwidth. The integrated silicon-based receiver shows well opened eye diagrams up to 20 Gb/s.
The utilization of guard traces with two ground vias at both ends to improve the eye opening and jitter for serpentine delay lines has been investigated. However, it is not easy to accomplish using normal manufacturing technology nowadays because the position of the pad of grounded via is surrounded by serpentine trace. This is especially true in normal manufacturing technology, in which size of the...
This work presents a novel, inexpensive and wideband common-mode noise suppression filter by using quarter-wavelength resonator. The quarter-wavelength resonator can provide a shorting path for common-mode return current of differential interconnects around the resonance frequency of the open stub. The feasibility of cascading several open stubs is proposed to achieve the wideband bandwidth over a...
Grounded guard traces are increasingly utilized to mitigate the crosstalk noise interference of the printed circuit board or package. This article discusses how the couple microstrip line inserted guard trace with stub affects the crosstalk noise. The guard trace with an open stub seriously degrades the performance of the coupled line with respect to signal integrity (SI) while far-end crosstalk noise...
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