Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev D
04-Sep-2002
Page 1 of 6
Features
For GPS applications
Usable bandwidth 2.0 MHz
High attenuation
Single-ended operation
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
1,3 Input/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 or Alloy 42, Au over Ni plated
Terminations: Au plating 0.5 - 1.0
m,
over a 2 - 6
m Ni plating
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev D
04-Sep-2002
Page 2 of 6
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1575.42 -
MHz
Insertion Loss
1574.42 - 1576.42 MHz
-
2.5
3.5
dB
Absolute Rejection
50
-
1535
MHz
1625
-
1630
MHz
1630
-
2500
MHz
2500
-
3000
MHz
3000
-
3500
MHz
35
30
35
35
30
41
52
43
38
37
-
-
-
-
-
dB
dB
dB
dB
dB
Input/Output Return Loss
10 13 -
dB
Propagation Delay Time
- 32
50
ns
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
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev D
04-Sep-2002
Page 3 of 6
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1575.42 -
MHz
Insertion Loss
1574.42 - 1576.42 MHz
-
2.5
3.6
dB
Absolute Rejection
50
-
1535
MHz
1625
-
1630
MHz
1630
-
2500
MHz
2500
-
3000
MHz
3000
-
3500
MHz
35
30
35
35
30
41
52
43
38
37
-
-
-
-
dB
dB
dB
dB
Input/Output Return Loss
10 13 -
dB
Propagation Delay Time
- 32
50
ns
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
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev D
04-Sep-2002
Page 4 of 6
Typical Performance
(at +25
o
C)
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev D
04-Sep-2002
Page 5 of 6
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
G
.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: 10000 units/reel
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