Preliminary Data Sheet
Features
•
•
•
•
•
•
For GPS applications
Usable bandwidth 2.0 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Part Number 856049
1575.42 MHz SAW Filter
•
Package
Surface Mount 2.50 x 2.00 x 0.76 mm
Pin Configuration
Bottom View
1
2
0.76 NOM.
0.84 MAX.
2.50
1.54
4
3
2.00
1.30
0.3X45°
CHAMFER
Pin No.
1,3
2,4
Description
Input/output
Case ground
0.58
0.84
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 - 1.0µm,
over a 2 - 6µm
Ni
plating
Subject to change or obsolescence without notice
Rev B
13-May-2002
Page 1 of 6
Preliminary Data Sheet
Operating Temperature Range:
(2)
-30 to +70
o
C
Part Number 856049
1575.42 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Insertion Loss
1574.42 - 1576.42 MHz
Absolute Rejection
50 - 1535 MHz
1625 - 1630 MHz
1630 - 2500 MHz
2500 - 3000 MHz
3000 - 3500 MHz
Input/Output Return Loss
Propagation Delay Time
Source Impedance:
(4)
Load Impedance:
(4)
Notes:
1.
2.
3.
4.
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
Minimum
-
-
35
30
35
32
25
10
-
-
-
Typical
1575.42
2.5
41
52
43
36
30
13
32
50
50
Maximum
-
3.5
-
-
-
-
-
50
-
-
Unit
MHz
dB
dB
dB
dB
dB
dB
ns
Ω
Ω
Test Circuit:
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
Subject to change or obsolescence without notice
Rev B
13-May-2002
Page 2 of 6
Preliminary Data Sheet
Operating Temperature Range:
(2)
-30 to +80
o
C
Part Number 856049
1575.42 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Insertion Loss
1574.42 - 1576.42 MHz
Absolute Rejection
50 - 1535 MHz
1625 - 1630 MHz
1630 - 2500 MHz
2500 - 3000 MHz
3000 - 3500 MHz
Input/Output Return Loss
Propagation Delay Time
Source Impedance:
(4)
Load Impedance:
(4)
Notes:
5.
6.
7.
8.
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
Minimum
-
-
35
30
35
32
25
10
-
-
-
Typical
1575.42
2.5
41
52
43
36
30
13
32
50
50
Maximum
-
3.6
-
-
-
-
-
50
-
-
Unit
MHz
dB
dB
dB
dB
dB
dB
ns
Ω
Ω
Test Circuit:
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
Subject to change or obsolescence without notice
Rev B
13-May-2002
Page 3 of 6
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev B
13-May-2002
Page 4 of 6
Preliminary Data Sheet
Part Number 856049
1575.42 MHz SAW Filter
Matching Schematics
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
Marking
Sawtek
logo
Marking
code
PCB Footprint
2.59
2.08
G
JJJYM
ID dot
Date code
CHAMFER
.36x45°
.78
.51
.51
1.04
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
8.8
2.7
Ø330
ID dot
Sawtek
logo
4.0
0.3
2.0
Ø1.5
A
1.75
2.75
Ø102
Direction of travel
Ø20.2
Ø13.0
2.0
3.5 8.0
4.0
Ø1.0
1.1
Section A-A
2.23
A
Dimensions shown are nominal in millimeters
Packaging quantity: 5000 units/reel
Subject to change or obsolescence without notice
Rev B
13-May-2002
Page 5 of 6
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