Measurements in 1149.4 environments – correcting the infrastructure switches influence

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2007

Autores

Manuel C. Felgueiras (Autor) Outra; Gustavo R. Alves (Autor) Outra; José M. M. Ferreira (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the IEEE 6th International Board Test Workshop (BTW 07)

Páginas: 1-7

IEEE 6th International Board Test Workshop (BTW 07)

Fort Collins (Colorado), EUA, 12 a 14 de Setembro de 2007

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

Abstract (EN): Measuring the values of discrete components frequently takes place during the test or debug phase of Printed Circuit Boards (PCB). This operation requires tools that are based on some access type. The shrinking geometries constrain the straightforward use of tools based on physical access. One of the aims of the IEEE1149.4 Std. is to facilitate those on-board measurements. This infrastructure relies on electronic access that includes high quality analog buses and a set of electronic switches, which enable to completely isolate a component under characterization, e.g. by injecting a known current and measuring the voltage across it. During this process, the infrastructure switches have a negative impact in the measurement accuracy. This paper analyses the measurement of one resistor in two situations: connected between a pin and ground and between two pins. The infrastructure switches that affect the measurement quality are identified and the upper limit of its systematic error is characterized. When the systematic error is completely defined then it is possible to remove its negative effect from the final result.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7