CALIFORNIA MICRO DEVICES
PRN103/153/125/155
Thin Film Differential Terminator Resistor Network
Features
• Thin film on silicon
• Tolerance ±2%
• Wide body surface mount SOIC and DIP
configuration
• Drop-in replacement to thick film networks
• Also available in custom schematic and
configuration
Applications
• Differential SCSI Termination
• SCSI Host Adapter Cards and
Other SCSI Devices
Product Description
The PRN103/153/125/155 is a high performance
Integrated Passive Device (IPD) designed to eliminate
transmission line effects on high-speed data lines on a
special bus called SCSI (Small Computer Systems
Interface). SCSI is a bus interface covered by an ANSI
standard that allows for an input/output bus to connect
small computers with a variety of peripheral devices.
Proper resistor termination requires a resistor whose
value closely matches the characteristic impedance of
the transmission line. Thin film networks offer significant
advantages over conventional thick film processes in
terms of tighter absolute and ratio tolerances, greater
stability, lower noise, and Temperature Coefficient of
Resistance (TCR). Furthermore, they offer superior high
frequency performance with minimal parasitic induc-
tance and capacitance. Integrated thin film networks
also offer the benefits of board space savings, reduced
assembly costs, and increased reliability with fewer
components.
SCHEMATIC CONFIGURATIONS
Schematic A — PRN103/153
Schematic B — PRN125/155
© 2000 California Micro Devices Corp. All rights reserved.
1/9/2001
C1160600
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
1
CALIFORNIA MICRO DEVICES
PRN103/153/125/155
POWER DERATING CURVE
ELECTRICAL
Resistance Range
Resistance Range
Operating Temperature Range
VCR
Max. Power Rating For Each
Resistor
Min. Insulation Resistance
Noise, Max. (MIL-STD-202,
Method 308)
R
1
= 170 to 660
Ω
R
2
= 80 to 300
Ω
−
55°C to 150°C
5ppm/V
100mW
10,000M
Ω
−
25dB
TO L E R A N C E S
Absolute Resistance
Tolerance, at 25° C (%)
Temperature Coefficient of Resistance,
ppm/° C
Typical Tracking TCR, ppm/° C
±1.0 ±2.0
±100
±10
P E R F O R M A N C E D ATA ( D E LTA R % )
Test per Mil-R-83401
Thermal Shock
Char H
Limits
.25
.5
.1
.1
.25
.1
.4
.25
.25
.5
.2
.1
.5
CAMD
Max
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.05
.1
CAMD
Typ
.02
.03
.03
.02
.02
.02
.03
.02
.02
.05
.05
.03
.05
MECHANICAL
Lead Plating
Lead Material
Lead Coplanarity
Substrate Material
Resistor Material
Body Material
Flammability
Tin-Lead
Copper Alloy
0.004" (0.102mm)
Silicon
Tantalum Nitride
Molded Epoxy
UL94V-0
Power Conditioning
Low Temperature
Operating
Short Time Overload
Terminal Strength
Resistance to Soldering
Hear
Moisture Resistance
Shock
Vibration
Life
High Temperature
Exposure
Low Temperature
Storage
25°C Power Rating
©2000 California Micro Devices Corp. All rights reserved.
2
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
1/9/2001
CALIFORNIA MICRO DEVICES
PRN103/153/125/155
S TA N D A R D VA L U E S
R1(
Ω
)
330
R2(
Ω
)
150
R Code
331/151
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
Part Type
PRN103
PRN125
PRN153
PRN155
Schematic
Pins
A
B
A
B
20
20
20
20
Package
Style
SOIC
SOIC
DIP
DIP
Ordering Part Number
Tape & Reel
PRN10320331/151G
PRN12520331/151G
PRN15320331/151G
PRN15520331/151G
Part Marking
PRN10320331/151G
PRN12520331/151G
PRN15320331/151G
PRN15520331/151G
N O N - 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
Part Series
Pin Count
R1 (XXX)
Value Code
R2 (XXX)
Tolerance
Example (PRN103)
PRN103-SOIC
PRN153-DIP
PRN125-SOIC
PRN155-DIP
(20)
20
20
20
20
(331)
(151)
(G)
F = ±1%
G = ±2%
First 2 digits are
s i g n i f i c a n t va l u e. T h i r d d i g i t
r e p r e s e n t s n u m b e r o f z e r o s t o f o l l o w.
© 2000 California Micro Devices Corp. All rights reserved.
1/9/2001
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
3
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