PACRG Datasheet, PDF (1/3 Pages) California Micro Devices Corp – P/ACTIVE HIGH PERFORMANCE GTL/ECL LOCAL TERMINATION NETWORK

CALIFORNIA MICRO DEVICES
PACRG
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
• Terminates 22 lines in a QSOP package
• Saves board space and reduces assembly cost
Applications
• Pentium Pro servers
• Pentium Pro desk top systems
• GTL, ECL terminator for embedded
processor busses
Refer to AP-201 Termination Application Note and AP-203 GTL+
Termination Application Note for further information.
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.
STANDARD SPECIFICATIONS
Absolute Tolerance (R)
±5%
Operating Temperature Range
0°C to 70°C
Power Rating/Resistor
100mW
Storage Temperature
–65°C to 150°C
Package Power Rating
1.00w, Max
STANDARD VALUES
R (Ω)
Code
47
470
50
500
56
560
68
680
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.
PIN DIAGRAM
24 23 22 21 20 19 18 17 16 15 14 13
R_T
R_T
1 2 3 4 5 6 7 8 9 10 11 12
R Code
470(1%)
500(1%)
560(1%)
680(1%)
Pins
24
24
24
24
STANDARD PART ORDERING INFORMATION
Package
Ordering Part Number
Style
Tubes
Tape & Reel
QSOP
PAC470RGQ/T
PAC470RGQ/R
QSOP
PAC500RGQ/T
PAC500RGQ/R
QSOP
PAC560RGQ/T
PAC560RGQ/R
QSOP
PAC680RGQ/T
PAC680RGQ/R
© 2000 California Micro Devices Corp. All rights reserved.
8/10/2000 215 Topaz Street, Milpitas, California 95035
Tel: [phone]
Fax: [phone]
Part Marking
PAC470RGQ
PAC500RGQ
PAC560RGQ
PAC680RGQ
+'"
www.calmicro.com
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