Data Sheet
Part Number 855958
118.579 MHz SAW Filter
Features
For multichannel CDMA transceiver applications
Usable bandwidth 3.69 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Package
Pin Configuration
Surface Mount 13.3 x 6.50 x 1.50 mm
Bottom View
6
7
8
9
10
5
4
3
2
1
Pin No.
Description
5
Output
10
Input
1,6
Ground
2,3,4,7,8,9
Case
ground
1.80
6.50
1.02
1.91
13.3
2.31
R0.51
1.50 NOM.
1.65 MAX.
0.64
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width
0.10mm
Body: Al
2
O
3
ceramic
Lid: Kovar, Ni plated
Terminations: Au plating 0.5 - 1.0
m,
over a 2 - 6
m Ni plating
Subject to change or obsolescence without notice
Rev -
29-Oct-2002
Page 1 of 5
Data Sheet
Part Number 855958
118.579 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-40 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 118.579 - MHz
Minimum Insertion Loss
- 17.4
19.0
dB
Lower 1.5 dB Bandwidth
(4)
Upper 1.5 dB Bandwidth
-
120.424
116.531
120.673
116.734
-
MHz
MHz
Passband Variation
- 0.45
1.5
dB
p-p
Phase Ripple
116.734 - 120.424 MHz
-
3.943
8.0
deg p-p
Phase Ripple
116.734 - 120.424 MHz
-
0.933
2.22
deg rms
Ultimate Rejection
(4)
15
-
113.679
MHz
123.479 - 126.48 MHz
126.48 - 200
MHz
45
43
45
56.55
51.59
57.29
-
-
-
dB
dB
dB
Rejection
(4)
102.609 MHz
108.749 MHz
113.679 MHz
115.369 MHz
115.849 MHz
116.119 MHz
121.039 MHz
121.309 MHz
121.789 MHz
123.479 MHz
126.480 MHz
134.549 MHz
45
45
45
20
10
4
4
10
20
43
45
45
74.71
71.59
56.64
52.17
15.84
7.13
5.67
12.21
39.97
56.25
62.87
68.40
-
-
-
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Input/Output VSWR
116.734 - 120.424 MHz
-
3.03
3.71
-
Source Impedance
(5)
- 50 -
Load Impedance
(5)
- 50 -
Notes:
1. All specifications are based on the test circuit shown on page 4
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
3. Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
4. All attenuation measurements are relative to minimum insertion loss
5. This is the optimum impedance in order to achieve the performance shown
Subject to change or obsolescence without notice
Rev -
29-Oct-2002
Page 2 of 5
Data Sheet
Part Number 855958
118.579 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
29-Oct-2002
Page 3 of 5
Data Sheet
Part Number 855958
118.579 MHz SAW Filter
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,2,3,4
6,7,8,9
50
270nH
10
5
330nH
50
270nH
180nH
Marking
PCB Footprint
XXXXXX
855958
SAWTEK
2.00
1.22
.69
8.84
6.70
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
A
A
24
1.75
11.5
1.5
2.3
13.9
4.0
1.5
2.0
0.3
12.0
7.1
Section A-A
Dimensions shown are nominal in millimeters
Packaging quantity: 2000 units/reel
Direction of travel
330
24.8
2.7
102
13.0
20.2
2.0
ID dot
Subject to change or obsolescence without notice
Rev -
29-Oct-2002
Page 4 of 5
Data Sheet
Part Number 855958
118.579 MHz SAW Filter
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-40
+85
o
C
Storage Temperature Range
T
stg
-60 +125
o
C
Warnings
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
Qualification Flowchart
S-Parameters
Sawtek's liability is limited only to the Surface Acoustic Wave (SAW) component(s) described in this data sheet. Sawtek does not accept any liability for
applications, processes, circuits or assemblies which are implemented using any Sawtek component described in this data sheet.
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
Soldering Profile
Other Technical Information
Subject to change or obsolescence without notice
Rev -
29-Oct-2002
Page 5 of 5
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