SURFACE MOUNTCERAMIC
ATTENUATOR, PIN DIODE
SERIES PI-800
0.84 GHz
GENERAL INFORMATION
The PI-800 Se
r ies atten uators are par t of the ne w Surfpac product line
featur ing good inter modulation perf ormance compared to their GaAs
counter par ts f or PCS/cellular base station use
. In addition, the PIN
diodes off er good po wer-handling capabilities and are less sensitiv
e to
electrostatic discharge pro
b lems . These f eatures are impo
r tant con -
sider ations in base station applications where the eff
ects of antenna-
related RF s witching and indirect lightning-induced
v oltage spik es are
present.
PIN diode components h
a ve inherent adv antages o ver the GaAs alte
r -
natives at PCS/cellular frequencie
s . The PI-800 Se
r ies atten uator
makes use of these adv
antages in a lo w cost surf ace-mount pa
c kage
suitable for pick-and-place application
s . As a result, the attentuator
satisfies both the technical specifications and the man
ufactur ing
requirements of tod
a y's demanding commercial ma
r
ketplace .
PIN diodes are widely accepted as more rob
ust alter natives to GaAs
FETs and off er higher isolation with lo wer inser tion loss than plastic
packaged GaAs atte
n uators at P ersonal Comm unications Ser vice
(PCS) frequencie
s . The PI-800 Se
r ies analog atte
n uator incor por ates
PIN diodes with highly reliab le thick-film technology and sur
f ace mount
components on a miniature l
o w cost sealed sur
f ace mount alumina
header . This new atten uator provides a good match, flat atte
n
uation
and o ver all super ior performance o ver the 0.84 GHz frequency
range , and can be optimi
z ed o ver lower frequency r anges .
GENERAL SPECIFICATIONS
Frequency Range: 10% B .W. Typical, 0.84 GHz
Insertion Loss: Per char t
Attenuation Range: Per char t
Control Voltage: 0-5 VDC
1 dB Compression Point: +27 dBm
Construction: Thick film alumina with epo xy sealed
cover
Speed: 2
sec
Temperature: -10 to +80C. See application note
for recommended maximum reflow
soldering temperatures.
.125
[3,18]
.025
[6,4]
.550
[13,97]
.500
[12,7]
FAR SIDE GROUND PLANE SHOWN
.750[19,1]
.700[17,8]
G
N
D
G
N
D
G
N
D
GND
GND
.275
[6,99]
.175
[44,4]
.075
[19,1]
RF IN
.275
[6,99]
.375[9,53]
.475[12,06]
G
N
D
B
I
A
S
G
N
D
IN OUT
B
I
A
S
GND
GND
RF OUT
Insertion
Frequency Attenuation Loss (dB) VSWR Typical
Model (GHz) Range (dB) Maximum Maximum Current(mA)
PI-820NS 1.84-1.94 0-6 0.7 1.50 30
PI-840 0.8-1.0 0-35 0.5 1.40 50
PI-850 0.8-1.0 0-30 1.0 1.50 50
PI-845 1.7-2.0 0-35 0.8 1.50 50
PI-855 1.7-2.0 0-25 1.0 1.50 50
PI-A05 2.4-2.46 0-20 1.3 1.50 50
PI-A04 3.55-3.65 0-25 1.5 1.50 50
PI-A06 3.5-4.0 0-20 1.5 1.50 50
FEATURES
Low Loss
Low I.M. products
PIN diode performance
Low VSWR
500 mw power
Pick and place and reflow manufacture
Shunt diode design
OUTLINEPI-800 SERIES
See Application Notes
11-5-02
KEY: Inches[Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25]
60 South Jefferson Road, Whippany, NJ 07981
Tel: 973-887-8100 Fax: 973-884-0445
email: sales@mcekdi-integrated.com
See us on the web @ www.mcekdi-integrated.com
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