PDF Solutions, Inc. is a provider of infrastructure technologies and services to the integrated circuit (IC) design and manufacturing, improve time to market, and improve profitability by addressing design and manufacturing interactions from product design to initial process ramps to mature manufacturing operations. The technologies and services focuses the entire process life cycle, which includes the time from the design of an IC through volume manufacturing of that IC. Its solutions include IC designs, test chips, an electrical wafer test system, proven methodologies, and professional services. The Company has developed solutions for yield simulation, analysis, loss detection, and improvement. Its CV infrastructure (CVi) enables customers to characterize the manufacturing process, and establish fail-rate information needed to calibrate manufacturing yield models, prioritize yield improvement activities and speed-up process learning-cycles.