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/lp/emerald-publishing/new-ucut-algorithmic-trimming-for-lightning-protection-wUKYYswRcO
- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 1356-5362
- DOI
- 10.1108/eb044240
- Publisher site
- See Article on Publisher Site
Abstract
Large ohm film resistors that guard sensitive telecommunication devices against the hazards of lightning require a set of exacting characteristics for tolerance, endurance, and productivity. These characteristics largely depend on how the resistor is trimmed. Conventional laser trimming is unable to provide all the requirements for this important resistor application. A new technique developed by Teradyne Inc. called Algorithmic Trimming employs an algorithm and data base to calculate realtime trim vectors that are used in a trimming hardware processor to overcome the drawbacks of conventional trimming. With this new technique 50ohm film resistors were trimmed to specification with 01 tolerance while attaining high resistor stability and a trim time of 300 milliseconds.
Journal
Microelectronics International – Emerald Publishing
Published: Mar 1, 1986