PRC207330J/470K [ETC]
Analog IC ; 模拟IC\nCALIFORNIA MICRO DEVICES
PRC207
Clock Terminator and Local EMI/RFI Filter
Features
Applications
• Filters at source of emissions
• Stable resistor-capacitor network
• Ideal for high-speed logic
• Clock termination
• Point of contact filtering
• Low pass filtering
• EMI/RFI filtering
• Low lead inductance
• Reduces board space compared to discretes
• 3-Pin SOT-23 package
Product Description
High speed microprocessors like Intel’s Pentium®, 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.
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 is an inte-
grated 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.
CAMD’s PRC207 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 “distributed” AC
terminators when filtered lines are dispersed across the
board.
SCHEMATIC CONFIGURATION
PRC207
3
C
R
1
2
© 2001 California Micro Devices Corp. All rights reserved.
C1720101
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
5/22/2001
1
CALIFORNIA MICRO DEVICES
PRC207
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.
Resistance Range
±5 to ±00Ω
±0 to ±00pF
±±0ꢀ
Capacitance Range
Absolute Tolerance (R)
Absolute Tolerance (C)
Operating Temperature Range
Power Rating/Resistor
Storage Temperature
Package Power Rating
±20ꢀ
–55°C to ±25°C
±00mW
–60°C to ±50°C
±W, MAX
R(Ω)
C(pF)
Breakdown
fc @ 3db*
Voltage MAX
33
47
47
50
75
±00
50
40
47
47
30V
30V
30V
30V
30V
±0V
±0V
30V
±03MHz
72MHz
±03MHz
47MHz
42MHz
±6MHz
±8MHz
80MHz
33
68
50
±00
±80
50
* with 0 source impedance
Part Number Key
Part Series
PRC207 XXX M / XXX
M
Capacitor Tolerance
K = ±±0ꢀ
M = ±20ꢀ
Resistance Code
• First 2 digits are
Capacitance Code
• First 2 digits are significant
value.
significant value
• Third digit represents
number of zeros to follow
• Third digit represents
number of zeros to follow
e.g., code for 68pF is 680.
e.g., code for 56Ω is 560
Resistor Tolerance
J = ±5ꢀ
K = ±±0ꢀ
M = ±20ꢀ
©2001 California Micro Devices Corp. All rights reserved.
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
2
5/22/2001
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