Preliminary Data Sheet
Part Number 856135
1575.42 MHz SAW Filter
Features
For GPS applications
Usable bandwidth 2 MHz
Very Low loss
Single-ended operation at 50
No impedance matching required for operation
at 50
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 2.50 x 2.00 x 0.76 mm
Bottom View
3
4
2
1
Pin No.
Description
1
Input
3
Output
2,4
Case
ground
0.3X45
CHAMFER
0.84
1.54
0.58
1.30
2.00
2.50
0.76 NOM.
0.84 MAX.
Dimensions shown are nominal in millimeters
All tolerances are
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 D
28-Jan-2003
Page 1 of 5
Preliminary Data Sheet
Part Number 856135
1575.42 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1575.42 -
MHz
Insertion Loss
1574.42 - 1576.42 MHz
-
0.78
1.4
dB
Absolute Attenuation
0
-
1475
MHz
1475
-
1522.42
MHz
1628.42 - 1750 MHz
1750
-
1800
MHz
1800
-
1990
MHz
1990
-
3000
MHz
3000
-
5000
MHz
5000
-
6000
MHz
30
25
25
32
32
30
20
17
36
37
37
36
38
40
25
25
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
Passband Variation
1574.42 - 1576.42 MHz
-
0.1
0.5
dB p-p
Input/Output Return Loss
1574.42 - 1576.42 MHz
10
18
-
dB
Source Impedance
(4)
- 50 -
Load Impedance
(4)
- 50 -
Notes:
1. All specifications are based on the test circuit shown below
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. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Subject to change or obsolescence without notice
Rev D
28-Jan-2003
Page 2 of 5
Preliminary Data Sheet
Part Number 856135
1575.42 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev D
28-Jan-2003
Page 3 of 5
Preliminary Data Sheet
Part Number 856135
1575.42 MHz SAW Filter
Matching Schematics
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Marking
PCB Footprint
Sawtek
logo
code
Marking
Date code
ID dot
JJJYM
R
.51
.51
1.04
.78
2.59
CHAMFER
.36x45
2.08
The date code consists of: JJJ = Julian day,
Y = last digit of year, M = manufacturing site code
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
1.75
3.5 8.0
A
A
2.0
4.0
4.0
1.0
1.5
2.75
1.1
0.3
Section A-A
2.23
2.7
8.8
330
102
20.2
13.0
2.0
ID dot
Direction of travel
Sawtek
logo
Dimensions shown are nominal in millimeters
Packaging quantity: 5000 units/reel
Subject to change or obsolescence without notice
Rev D
28-Jan-2003
Page 4 of 5
Preliminary Data Sheet
Part Number 856135
1575.42 MHz SAW Filter
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-30
+85
o
C
Storage Temperature Range
T
stg
-40 +85
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 D
28-Jan-2003
Page 5 of 5
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