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| CALIFORNIA MICRO DEVICES PRC298/299 Clock Terminator Features * Stable resistor-capacitor network * Ideal for high-speed logic * Low lead inductance * Reduces board space compared to discretes * SOT Packages Application * Clock termination Product Description High speed microprocessors like Intel's Pentium(R), DEC's Alpha, Motorola's 68K and PowerPC, Sun's SPARC, MIPs, and other RISC-based systems require wellcontrolled and precise clock signals to maintain a high performance synchronous system. However, very fast edge rated clock signals exhibit transmission line effects on the clock lines resulting in undershoot and overshoot disturbances. CAMD's PRC298/299 SOT resistor-capacitor integrated thin film networks are specifically designed to eliminate transmission line effects on high speed clock and data lines. These networks are fabricated on a silicon substrate using advanced thin film technology. They have low parasitic inductance compared to discrete and conventional thick film filters and provide effective AC termination. Why thin film RC networks? The PRC298/299 is an integrated RC network fabricated on a silicon substrate using advanced thin film technology. This technology insures a fixed time constant and does not create additional skew on the clock lines. It offers very low parasitic inductance compared to conventional discrete thick film-based approaches and provides effective termination at high frequencies. SCHEMATIC CONFIGURATIONS 2 R C 3 R C C R C R 1 3 PRC299 (SOT-23) C R 2 1 4 PRC298 (SOT-143) (c) 2001 California Micro Devices Corp. All rights reserved. C1730201 215 Topaz Street, Milpitas, California 95035 2/28/2001 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 1 CALIFORNIA MICRO DEVICES PRC298/299 California Micro Devices can develop a fully customized solution which embodies the configuration shown in this data sheet or modified to suit specific application requirements. A Non-Recurring Engineering (NRE) charge will apply for all fully customized requirements and a minimum order/lot will be required. Please direct your detailed circuit configuration and specification requirements to your local CAMD representative or to the factory for a quotation. STANDARD SPECIFICATIONS Resistance Range Capacitance Range Absolute Tolerance (R) Absolute Tolerance (C) Operating Temperature Range Power Rating/Resistor Storage Temperature Package Power Rating 15 to 100 10 to 100pF 10% 20% -55C to 125C 100mW -60C to 150C 1W, MAX TYPICAL VALUES Part Number PRC298 PRC298 PRC298 PRC298 PRC298 PRC298 PRC298 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 PRC299 33 47 47 50 75 100 40 33 47 47 50 75 100 40 50 50 47 50 33 Resistor Value () Tolerance 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 5% 20% 5% Capacitor Value (pF) 47pF 47pF 33pF 68pF 50pF 100pF 50pF 47pF 47pF 33pF 68pF 50pF 100pF 50pF 100pF 68pF 47pF 100pF 47pF Tolerance 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 10% 20% 20% 20% Breakdown Voltage (MAX) 25V 25V 25V 25V 25V 10V 25V 45V 45V 45V 45V 45V 10V 45V 10V 45V 45V 10V 45V (c)2001 California Micro Devices Corp. All rights reserved. 2 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 2/28/2001 CALIFORNIA MICRO DEVICES PRC298/299 Part Number Key PRC289 PRC299 XXX M / XXX M Part Series Resistance Code * First 2 digits are significant value * Third digit represents number of zeros to follow e.g., code for 56 is 560 Resistor Tolerance J = 5% K = 10% M = 20% Capacitor Tolerance K = 10% M = 20% Capacitance Code * First 2 digits are significant value. * Third digit represents number of zeros to follow e.g., code for 68pF is 680. (c) 2001 California Micro Devices Corp. All rights reserved. 215 Topaz Street, Milpitas, California 95035 2/28/2001 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 3 |
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