CALIFORNIA MICRO DEVICES
PRC207/298/299
Clock Terminator and Local EMI/RFI Filter
Features
鈥?Filters at source of emissions
鈥?Stable resistor-capacitor network
鈥?Ideal for high-speed logic
鈥?Low lead inductance
鈥?Reduces board space by 70% vs. 1206 discretes
and component count by more than 50%
Applications
鈥?Clock termination
鈥?Point of contact filtering
鈥?Low pass filtering
鈥?EMI/RFI filtering
Product Description
High speed microprocessors like Intel鈥檚 Pentium
廬
Pro,
DEC鈥檚 Alpha, Motorola鈥檚 68K and PowerPC, Sun鈥檚
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 鈥渄istrib-
uted鈥?AC terminators when filtered lines are dispersed
across the board.
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.
SCHEMATIC CONFIGURATION
PRC207
2
C
C
R
1
3
R
1
3
C
R
1
4
PRC299
2
R
C
PRC298
2
3
R
C
C
R
Config. 1
Config. 2
Config. 3
S TA N D A R D PA R T O R D E R I N G I N F O R M AT I O N
Package
RC Code
11
12
13
14
15
16
17
18
Pins
3
3
3
3
3
3
3
3
Style
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
Bag
PRC207330K/470M/B
PRC207470K/470M/B
PRC207470K/330M/B
PRC207500K/680M/B
PRC207750K/500M/B
PRC207101K/101M/B
PRC207500K/181M/B
PRC207400K/500M/B
Ordering Part Number
Tape & Reel
PRC207330K/470M/R
PRC207470K/470M/R
PRC207470K/330M/R
PRC207500K/680M/R
PRC207750K/500M/R
PRC207101K/101M/R
PRC207500K/181M/R
PRC207400K/500M/R
Part Marking
RC11
RC12
RC13
RC14
RC15
RC16
RC17
RC18
C1170600
漏 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
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