PAC680RGQ California Micro Devices Corporation, PAC680RGQ Datasheet
PAC680RGQ
Manufacturer Part Number
PAC680RGQ
Description
P/active high performance GTL/ECL local termination ntework
Manufacturer
California Micro Devices Corporation
Datasheet
1.PAC680RGQ.pdf
(3 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PAC680RGQ
Manufacturer:
CMD
Quantity:
5 510
© 2000 California Micro Devices Corp. All rights reserved.
8/10/2000
Features
• Designed especially for Pentium Pro and RISC-
• Provides high speed bus termination
• Reduces ground bounce with center ground
• Terminates 22 lines in a QSOP package
• Saves board space and reduces assembly cost
Product Description
CAMD’s P/Active RG GTL+ Local Bus Terminator is ideal
for Pentium Pro and related high speed bus termination
applications where a resistor approach is deemed suitable.
This device also meets the high-speed bus termination
demands of microprocessors like Motorola’s PowerPC,
DEC’s Alpha, Sun’s SPARC, and SGI’s MIPs processor, as
well as other high performance RISC processors for
embedded control applications.
The PACRG offers 22 terminations per package and meets
all related Intel specifications for Pentium Pro termination
requirements. Four popular values are available for a
variety of bus termination applications and line impedance
requirements: 47, 50, 56 and 68 ohms.
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P/Active High Performance GTL/ECL Local Termination Network
215 Topaz Street, Milpitas, California 95035
based computers/servers
pin placement
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Applications
• Pentium Pro servers
• Pentium Pro desk top systems
• GTL, ECL terminator for embedded
Refer to AP-201 Termination Application Note and AP-203 GTL+
Termination Application Note for further information.
The P/Active RG Termination Networks provide high
performance, high reliability, and low cost through manu-
facturing efficiency. The termination resistor elements are
fabricated using proprietary state-of-the-art thin film
technology. CAMD’s highly integrated solution is silicon-
based and has the same enhanced reliability characteris-
tics as today’s microprocessor products. The thin film
resistors have very high stability over a wide temperature
range, over applied voltage, and over life. In addition, the
QSOP industry standard packaging is manufacturing-
friendly and yields the high reliability of other semiconduc-
tor components. The P/Active RG Pentium Pro Termination
Network provides a complete 300 point termination
solution in only 14 QSOP packages.
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PAC680RGQ Summary of contents
Page 1
CALIFORNIA MICRO DEVICES P/Active High Performance GTL/ECL Local Termination Network Features • Designed especially for Pentium Pro and RISC- based computers/servers • Provides high speed bus termination • Reduces ground bounce with center ground pin placement ...
Page 2
CALIFORNIA MICRO DEVICES Signal at Termination and Victim Line (TA=25 Channel 1 (500mV/division) Termination Signal, Channel 2 (250mV/division) Victim Voltage. The victim voltage crosstalk measures 65mV in the critical areas around the system clock. The system clock occurs approximately 4ns ...
Page 3
CALIFORNIA MICRO DEVICES Test Circuit JP1 GND 1 VCC_5 2 VCC_5 GND 3 VCC_3 4 VCC_3 GND 5 VCC_1.5 6 VCC_1.5 GND 7 GND 8 POWER GND VCC_1 VREF R4 C24 C25 2K 1000pF 0.1uF GND GND © ...