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RC network provides memory termination

Posted: 22 May 2006 ?? ?Print Version ?Bookmark and Share

Keywords:BB1110RC? resistor-capacitor network? TT electronics? Gina Roos?

Model BB1110RC resistor-capacitor network

TT electronics BI Technologies Electronic Components Division provides a space-saving termination for high-speed memory busses and decoupling for high-frequency data line drivers with the Model BB1110RC resistor-capacitor network.

The Model BB1110RC high-density flip chip BGA-mounted device includes nine 50 ohm resistors in series and nine X5R 0.1F/10V chip capacitors in a center-bussed schematic, all integrated on a single substrate. Resistor tolerance is 1 percent, capacitor tolerance is 10 percent and the temperature coefficient of resistance is 200ppm/C. The resistor power rating is 0.05W at 70C, and the overall package power rating is 1W at 70C. The operating temperature range is -55C to 85C.

The two-sided networks feature solder balls on one side and components on the other side. Connection is achieved with solid-filled vias. The company said the unique network construction provides very low capacitance and inductance parasitics, which are required in high-speed applications.

The BGA network uses 27 high-temperature solder balls in a 3 x 9 array that will not collapse during board mounting, using industry-standard ball diameter and 1mm pitch, according to the company. Overall package dimensions are 9-by-3mm with a board-mounted profile of 2.4mm.

Typical pricing for the Model BB1110RC networks is $1 in medium range volumes, with lead times from stock to eight weeks.

- Gina Roos
eeProductCenter




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