© 2000 California Micro Devices Corp. All rights reserved.
1/23/2001 1
PRC207/298/299
CALIFORNIA MICRO DEVICES
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
Clock Terminator and Local EMI/RFI Filter
Features
• Filters at source of emissions
• Stable resistor-capacitor network
• Ideal for high-speed logic
• Low lead inductance
• Reduces board space by 70% vs. 1206 discretes
and component count by more than 50%
Product Description
High speed microprocessors like Intel’s Pentium® Pro,
DEC’s Alpha, Motorola’s 68K and PowerPC, Sun’s
SPARC, MIPs, and other RISC-based systems require
well-controlled 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.
CAMDs PRC207/298/299 SOT resistor-capacitor
integrated thin film networks are specifically designed to
eliminate transmission line effects on high speed clock
and data lines. They are effective in suppressing EMI/
RFI noise at I/O ports and can also be used as “distrib-
uted” AC terminators when filtered lines are dispersed
across the board.
Applications
• Clock termination
• Point of contact filtering
• Low pass filtering
• EMI/RFI filtering
C1170600
SCHEMATIC CONFIGURATION
These networks are fabricated on a silicon substrate
using advanced thin film technology. They have low
parasitic inductance compared to discrete and conven-
tional thick film filters and provide effective AC termina-
tion and EMI/RFI noise suppression over a wide range of
frequencies.
Why thin film RC networks? The PRC207/298/299 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.
NOITAMROFNIGNIREDROTRAPDRADNATS
egakcaPrebmuNtraPgniredrO
edoCCRsniPelytSgaBleeR&epaTgnikraMtraP
113 32-TOSB/M074/K033702CRPR/M074/K033702CRP11CR
213 32-TOSB/M074/K074702CRPR/M074/K074702CRP21CR
313 32-TOSB/M033/K074702CRPR/M033/K074702CRP31CR
413 32-TOSB/M086/K005702CRPR/M086/K005702CRP41CR
513 32-TOSB/M005/K057702CRPR/M005/K057702CRP51CR
613 32-TOSB/M101/K101702CRPR/M101/K101702CRP61CR
713 32-TOSB/M181/K005702CRPR/M181/K005702CRP71CR
813 32-TOSB/M005/K004702CRPR/M005/K004702CRP81CR
C
CC C
RRR
R
C
R
C
R
3
22
23
1
Config. 1
PRC207 PRC299 PRC298
3
1
Config. 2
4
1
Config. 3
©2000 California Micro Devices Corp. All rights reserved.
1/23/2001
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
2
PRC207/298/299
CALIFORNIA MICRO DEVICES
SNOITACIFICEPSDRADNATS
)R(ecnareloTetulosbA%01±
)C(ecnareloTetulosbA%02±
egnaRerutarepmeTgnitarepOC°07otC°0
rotsiseR/gnitaRrewoP*Wm001
erutarepmeTegarotS −C°051otC°56
gnitaRrewoPegakcaP.xam,W1
SEULAVDRADNATS
R
(ΩΩ
Ω
ΩΩ)
C
)fp( .gifnoC
nwodkaerB
egatloV
)xam(
CR
edoC .gifnoC
nwodkaerB
egatloV
)xam(
CR
edoC .gifnoC
nwodkaerB
egatloV
)xam(
CR
edoC *db3@cf
33741 V03 112 V54 123 V52 13zHM301
74741 V03 212 V54 223 V52 23zHM27
74331 V03 312 V54 323 V52 33zHM301
05861 V03 412 V54 423 V52 43zHM74
57051 V03 512 V54 523 V52 54zHM24
0010011 V01 612 V01 623 V01 65zHM61
050811 V01 71- - -- - -zHM81
04051 V03 812 V54 823 V52 83zHM08
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.
)deunitnoC(NOITAMROFNIGNIREDROTRAPDRADNATS
egakcaPrebmuNtraPgniredrO
edoCCRsniPelytSgaBeeR&epaTgnikraMtraP
123 32-TOSB/M074/K033992CRPR/M074/K033992CRP12CR
223 32-TOSB/M074/K074992CRPR/M074/K074992CRP22CR
323 32-TOSB/M033/K074992CRPR/M033/K074992CRP32CR
423 32-TOSB/M086/K005992CRPR/M086/K005992CRP42CR
523 32-TOSB/M005/K057992CRPR/M005/K057992CRP52CR
623 32-TOSB/M101/K101992CRPR/M101/K101992CRP62CR
823 32-TOSB/M005/K004992CRPR/M005/K004992CRP82CR
134 341-TOSB/M074/K033892CRPR/M074/K033892CRP13CR
234 341-TOSB/M074/K074892CRPR/M074/K074892CRP23CR
334 341-TOSB/M033/K074892CRPR/M033/K074892CRP33CR
434 341-TOSB/M086/K005892CRPR/M086/K005892CRP43CR
534 341-TOSB/M005/K057892CRPR/M005/K057892CRP53CR
634 341-TOSB/M101/K101892CRPR/M101/K101892CRP63CR
834 341-TOSB/M005/K004892CRPR/M005/K004892CRP83CR
053 32-TOSB/M101/K005992CRPR/M101/K005992CRP05CR
153 32-TOSB/K086/K005992CRPR/K086/K005992CRP15CR
253 32-TOSB/M074/J074992CRPR/M074/J074992CRP25CR
353 32-TOSB/M101/M005992CRPR/M101/M005992CRP35CR
453 32-TOSB/M074/J033992CRPR/M074/J033992CRP45CR
* 40mW for configuration 2
* with 0 source impedance
