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First 40nm Thunderbird active cable chips sample

May 09, 2012 // Nick Flaherty

First 40nm Thunderbird active cable chips sample

Intersil has started sampling the first 40nm chips for the 20Gbit/s Thunderbird active cable specification.


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Intersils active cable system solution includes the 40nm ISL37231 active cable IC and the ISL80083 companion power management IC. This chipset breaks the cost barrier to widespread adoption with the integration of key components such as microcontroller, input rail selector, level shifters and eye monitor. The two chip solution consumes less than 450mW and eliminates expensive heat sinking required by alternative solutions and permits smaller connector housings on each end of the Thunderbolt cable.
Using 40nm reduces standby power consumption by as much as 50% and patent-pending cable compensation techniques allow cable manufacturers to use inexpensive bulk cable with enhanced yield. Built-In Test (BIST) eliminates expensive and time consuming manual testing by integrating an embedded processor, PRBS generator and error checker.
As data rates in cables reach 10Gbps and beyond, the physical properties of thin cables cause significant signal impairment. In order to correct for signal impairment, complex high-speed transceiver ICs must be located within the connectors at each end of a cable. The Thunderbolt active cable specification - developed by Intel and used by Apple - is the first consumer examples of this trend which will become prevalent for high-speed interconnections in the coming years.
Intersils solution provides two bi-directional channels with an aggregate transfer rate of 20Gbps. Users can easily interconnect Thunderbolt-enabled products with a single thin cable, and daisy-chain up to six devices.
Weve set the stage for an unprecedented low price point for Thunderbolt cable, said Roger Levinson, vice president & general manager for Intersils signal path products group. This will promote the simple, high-speed interconnection of peripherals that lead to enhanced digital experiences. Our 40nm technology reduces the cost of every variable in the cable manufacturing process, enabling the widespread adoption of Thunderbolt technology.
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