Data Sheet
Features
•
•
•
•
•
•
•
For GPS applications
Usable bandwidth 2.4 MHz
Low loss
No impedance matching required for operation
at 50
Ω
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Part Number 855969
1575.42 MHz SAW Filter
•
Package
Surface Mount 3.0 x 3.0 x 1.22 mm
Pin Configuration
1
2
3
1.22 NOM.
1.32 MAX.
0.69
3.00
6
5
4
0.75
1.50
3.00
0.75
Pin No.
2,5
1,3,4,6
Description
Input/Output
Case ground
0.60
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 - 1.0µm,
over a 2 - 6µm
Ni
plating
Subject to change or obsolescence without notice
Last Updated: 14-May-2001
Page 1 of 5
Data Sheet
Operating Temperature Range:
(2)
-40 to +85
o
C
Part Number 855969
1575.42 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Maximum Insertion Loss
1574.22 - 1576.62 MHz
Passband Ripple
1574.22 - 1576.62 MHz
Absolute Attenuation
10 - 1450 MHz
1450 - 1500 MHz
1625 - 1640 MHz
1640 - 2000 MHz
2000 - 3000 MHz
Input/Output VSWR
1574.22 - 1576.62 MHz
Terminating Source Impedance:
(4)
Terminating Load Impedance:
(4)
Operating Temperature Range
Notes:
1.
2.
3.
4.
Minimum
-
-
-
40
30
30
45
30
-
-
-
-40
Typical
1575.42
1.3
0.3
42
45
58
49
35
1.2:1
50
50
+25
Maximum
-
1.8
1
-
-
-
-
-
2:1
-
-
+85
Unit
MHz
dB
dB p-p
dB
dB
dB
dB
dB
dB
Ω
Ω
o
C
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
Test Circuit:
2
5
50
Ω
50
Ω
Single-ended
50
Ω
1,3,4,6
No impedance matching
required
Subject to change or obsolescence without notice
Last Updated: 14-May-2001
Page 2 of 5
Data Sheet
Part Number 855969
1575.42 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Last Updated: 14-May-2001
Page 3 of 5
Data Sheet
Part Number 855969
1575.42 MHz SAW Filter
Matching Schematics
2
5
50
Ω
50
Ω
Single-ended
50
Ω
1,3,4,6
No impedance matching
required
Marking
Sawtek
logo
Marking
code
PCB Footprint
3.20 SQ
.96
4
XXX
1.70
1.27
Pad 1
ID dot
.81
Date code
.38
Date code is the day of the current year in 3-digit Julian format
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
12.8
2.7
Ø330
Sawtek
logo
4.0
0.21
2.0
Ø1.5
A
1.75
5.5
Pad 1 ID dot
Ø102
Ø20.2
Ø13.0
12.0
3.25
2.0
Direction of travel
1.4
Section A-A
3.25
4.0
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 5000 units/reel
Subject to change or obsolescence without notice
Last Updated: 14-May-2001
Page 4 of 5
Data Sheet
Parameter
Operating Temperature Range
Storage Temperature Range
RF Power
T
T
stg
P
in
Part Number 855969
1575.42 MHz SAW Filter
Maximum Ratings
Symbol
Minimum
-40
-40
-
Maximum
+85
+85
+10
Unit
C
C
dBm
o
o
Warnings
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
Reel and Packaging Label
Soldering Profile
Other Technical Information
Contact Information
PO Box 609501
Orlando, FL 32860-9501
USA
Subject to change or obsolescence without notice
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
Last Updated: 14-May-2001
Page 5 of 5
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