California Micro Devices' PACTM002SPFQ series/parallel termination network is for use in computers, high-speed servers, network routers and other potential systems in the communications infrastructure. This device provides complete termination to unique high-speed logic devices such as double data rate (DDR) RAMs, NMOS transceiver logic (NTL) and stub series terminated logic (SSTL). This series/parallel termination network integrates 12 resistors and provides six terminating channels per package. The PAC002SPFQ is manufactured using state-of-the-art thin film technology. The device optimises signal integrity by reducing reflections and ringing which have become such concerns in modern high-speed system design.
The resistors are trimmed to an absolute tolerance of 1%, which provides tighter impedance matching to the signal traces in the system, and results in greatly reduced reflections and signal distortion. The integrated solution is silicon-based and has the same reliability characteristics as any of today's microprocessor products, says the company. The PAC002SPFQ is available in a 16-pin QSOP package. While the PAC002SPFQ provides impedance levels that match some of the most common buses, custom values are also available in the same configuration for systems with slightly different requirements.
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