CALIFORNIA MICRO DEVICES
PRN103/153/125/155
Thin Film Differential Terminator Resistor Network
Features
• Thin film on silicon
• Tolerance ±2%
• Wide body surface mount SOIC and DIP
configuration
• Drop-in replacement to thick film networks
• Also available in custom schematic and
configuration
Applications
• Differential SCSI Termination
• SCSI Host Adapter Cards and
Other SCSI Devices
Product Description
The PRN103/153/125/155 is a high performance
Integrated Passive Device (IPD) designed to eliminate
transmission line effects on high-speed data lines on a
special bus called SCSI (Small Computer Systems
Interface). SCSI is a bus interface covered by an ANSI
standard that allows for an input/output bus to connect
small computers with a variety of peripheral devices.
Proper resistor termination requires a resistor whose
value closely matches the characteristic impedance of
the transmission line. Thin film networks offer significant
advantages over conventional thick film processes in
terms of tighter absolute and ratio tolerances, greater
stability, lower noise, and Temperature Coefficient of
Resistance (TCR). Furthermore, they offer superior high
frequency performance with minimal parasitic induc-
tance and capacitance. Integrated thin film networks
also offer the benefits of board space savings, reduced
assembly costs, and increased reliability with fewer
components.
SCHEMATIC CONFIGURATIONS
Schematic A — PRN103/153
Schematic B — PRN125/155
© 2000 California Micro Devices Corp. All rights reserved.
1/9/2001
C1160600
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
