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Multi-contact probe tests 30µm x 50µm pads

Posted: 12 Oct 2011     Print Version  Bookmark and Share

Keywords:probe  wireless HDMI  automotive radar 

Cascade Microtech Inc. debuts the InfinityQuad, touted as the only multi-contact probe head capable of automatically probing aluminium, copper or gold pads as small as 30µm x 50µm.

Built on Cascade Microtech Infinity Probe technology, the InfinityQuad probe addresses mixed-signal device manufacturing requirements in emerging markets such as automotive radar and wireless HDMI.

Analogue automotive application-specific devices lead the growth segments in the IC industry, according to a recent report by IC Insights stating systems and features such as GPS/Navigation, anti-roll, and collision-avoidance/adaptive cruise control are expected to help this segment achieve 32 per cent growth in 2011. The high-frequency devices found in today's collision-avoidance radar and wireless HDMI are made up of complex mixed-signal integrated circuits containing RF, DC and logic with frequencies of 60-80GHz. Up until now, it has been difficult to probe these frequencies on very small pads and deliver accurate measurements.

The new InfinityQuad probe uses a unique lithographically-defined probe architecture to probe small pads and enable high-frequency test. This probe technology enables customisation of up to 25 contacts for ground, power, logic, RF or mm-wave contacts to 110GHz, and enables probing of 30µm x 50µm pads at fine pitches over a temperature range of -40 to +125°C with minimal pad damage. The InfinityQuad delivers repeatable, accurate measurement of ICs, transistor or device arrays and test structures with low contact resistance on aluminium, copper or gold pads.

The InfinityQuad probe is claimed to be the only probe technology that allows automated testing of automotive radar and other advanced devices with multiple mm-wave signals as well as many lower frequency signals, power and control lines.

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