Data Sheet
Features
•
•
•
•
•
•
•
For CDMA basestation IF applications
Usable bandwidth of 1.18 MHz
Low loss
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Part Number 855395
141 MHz SAW Filter
•
Package
Surface Mount 19.00 x 6.50 x 1.75 mm
Pin Configuration
Bottom View
1
2
3
4
5
1.75 NOM.
1.96 MAX.
0.76
10 9
8
7
6
19.0
1.80
1.91
R0.51
6.50
2.31
1.02
Pin No.
1
5
6
10
2,3,4
7,8,9
Description
Input
Output return
Output
Input return
Case ground
Case ground
Dimensions shown are nominal in millimeters
All tolerances are
±0.15mm
except overall
length and width +0.15mm/-0.10mm
Body:
Al
2
O
3
ceramic
Lid:
Kovar, Ni
plated
Terminations:
Au
plating 0.5 - 1.0µm,
over a 2 - 6µm
Ni
plating
Subject to change or obsolescence without notice
Rev A
08-Mar-2004
Page 1 of 5
Data Sheet
Operating Temperature Range:
(2)
0 to +85
o
C
Part Number 855395
141 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency, f
0
Insertion Loss at 141MHz
Amplitude Variation
140.475 - 141.525 MHz
Attenuation
139.75
140.41
141.59
142.25
Phase Linearity
140.37 - 141.63 MHz
Average Delay
140.37 - 141.63 MHz
Group Delay Variation
140.475 - 141.525 MHz
Rejection
79.75 - 139.75 MHz
142.25 - 202.25 MHz
Return Loss
140.475 - 141.525 MHz
Source Impedance:
(4)
Load Impedance:
(4)
Notes:
1.
2.
3.
4.
Minimum
-
-
-
42.5
-
-
42.5
-
2.34
-
42.5
42.5
10
-
-
Typical
141
11.7
0.67
48
1
1
48
1.2
2.44
145
>45
>45
13
50
50
Maximum
-
14
1
-
3.75
3.75
-
2
2.54
300
-
-
-
-
-
Unit
MHz
dB
dB p-p
dB
dB
dB
dB
Deg RMS
µsec
nsec
dB
dB
dB
Ω
Ω
All specifications are based on the test circuit shown below
In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
This is the optimum impedance in order to achieve the performance shown
Manual Test Circuit:
104nH
1
6
56pF
50Ω
104nH
50Ω
Single-ended
50Ω
56pF
2,3,4,5
7,8,9,10
Subject to change or obsolescence without notice
Rev A
08-Mar-2004
Page 2 of 5
Data Sheet
Part Number 855395
141 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev A
08-Mar-2004
Page 3 of 5
Data Sheet
Actual matching values may vary due to PCB layout and parasitics
104nH
1
6
104nH
Part Number 855395
141 MHz SAW Filter
Matching Schematics
50Ω
Single-ended
50Ω
56pF
2,3,4,5
7,8,9,10
56pF
50Ω
Marking
PCB Footprint
8.84
SAWTEK
855395
XXXXXX
ID Dot
Date Code
6.70
2.00
1.22
.69
The date code consists of: day of the current year (Julian,
3 digits), last digit of the year (1 digit) and hour (2 digits)
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
2.7
32.8
Ø330
ID dot
0.3
2.0
4.0
Ø1.5
R0.75
A 1.75
14.2
19.6
32.0
28.4
Ø102
Ø20.2
Ø13.0
2.0
0.20
Direction of travel
2.3
Section A-A
7.1
12.0
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 2000 units/reel
Subject to change or obsolescence without notice
Rev A
08-Mar-2004
Page 4 of 5
Data Sheet
Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855395
141 MHz SAW Filter
Symbol
T
T
stg
Minimum
0
-40
Typical
+25
-
Maximum
+85
+85
Unit
o
o
C
C
Warnings
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
Soldering Profile
Other Technical Information
Contact Information
PO Box 609501
Orlando, FL 32860-9501
USA
Phone: +1 (407) 886-8860
Fax: +1 (407) 886-7061
Email:
custservice@sawtek.com
Web:
www.sawtek.com
Or contact one of our worldwide
network of
sales offices,
representatives or distributors
Subject to change or obsolescence without notice
Rev A
08-Mar-2004
Page 5 of 5
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