We describe a floating-gate trimmed, 14-bit, 250Ms/s current-steered DAC fabricated in a 0.25μm CMOS logic process. We trim the static INL to ±0.3LSB using analog charge stored on floating-gate pFETs. The DAC occupies 0.44mm of die area, consumes 53mW at 250MHz, allows on-chip electrical trimming, and achieves 72dB SFDR at 250Ms/s. Introduction Emerging standards for communications systems requ...

We present a new representation for trimmed parametric surfaces. Given a set of trimming curves in the parametric domain of a surface, our method locally reparametrizes the parameter space to permit accurate representation of these features without partitioning the surface into subsurfaces. Instead, the parameter space is segmented into subspaces containing the trimming curves, the boundaries o...

MEMS devices with harmonic oscillators resonating at specific frequency are useful in variety of applications. One of these applications that demands high and accurate resonant frequency is optical scanners for display applications. Due to the large tolerances of MEMS fabrication a calibration is required to achieve accuracy in resonance frequency. In this paper we present a novel technique for...

We implemented an initial application of a sentence-trimming approach (Trimmer) to the problem of multi-document summarization in the MSE2005 and DUC2005 tasks. Sentence trimming was incorporated into a feature-based summarization system, called MultiDocument Trimmer (MDT), by using sentence trimming as both a preprocessing stage and a feature for sentence ranking. We demonstrate that we were a...

An attempt was made to determine the water-binding capacity of each individual trimming in a multicomponent system. Three types of experimental cooked sausages (finely chopped luncheon sausage, coarsely chopped sausage and ring sausage with potato starch) were made of five different meat trimmings: two pork trimmings and two beef trimmings, and one beef trimming used as a replacer. The water-bi...

Synthesis of ribosomal RNA (rRNA) by RNA polymerase (Pol) I is the first step in ribosome biogenesis and a regulatory switch in eukaryotic cell growth. Here we report the 12 A cryo-electron microscopic structure for the complete 14-subunit yeast Pol I, a homology model for the core enzyme, and the crystal structure of the subcomplex A14/43. In the resulting hybrid structure of Pol I, A14/43, th...