Preliminary Data Sheet
Part Number 856134
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
10-Sep-2002
Page 1 of 6
Features
For GPS applications
Usable bandwidth 2 MHz
Super low loss
High attenuation
No impedance matching required for operation
at 100
Single-ended input
Balanced output
Superior amplitude and phase balance
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 2.50 x 2.00 x 0.76 mm
Bottom View
5
4
3
2
1
Pin No. Description
1
Input
2,5
Case
ground
3,4
Balanced
output
0.76 NOM.
0.84 MAX.
0.50
0.50
2.00
2.50
0.94
1.38
0.94
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 856134
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
10-Sep-2002
Page 2 of 6
Electrical Specifications
(1)
Operating Temperature:
(2)
+25
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1575.42 -
MHz
Maximum Insertion Loss
1574.42 - 1576.42 MHz
-
1.4
1.5
dB
Absolute Attenuation
DC - 1450 MHz
1450 - 1475 MHz
1475 - 1525 MHz
1625
-
1675
MHz
1675
-
1775
MHz
1775
-
3155
MHz
3155
-
6000
MHz
30
27
15
12
20
30
35
38
31
26
14
22
35
45
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Input/Output Return Loss
1574.42 - 1576.42 MHz
10
16
-
dB
Output Amplitude Balance (|S
31
/S
21
|)
1574.42 - 1576.42 MHz
-
0.5
0.75
dB
Output Phase Balance
(S
31
)-
(S
21
)
1574.42 - 1576.42 MHz
180
185
190
degree
Nominal Source Impedance
- 50 -
Optimal Load Impedance (balanced)
(4)
-
120 + j35
-
Notes:
1. All specifications are based on the test circuit shown below
2. This specification is valid for room temperature only. The specification over the full temperature range(s) is available on the next
page(s)
3. Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
4. This is the optimum impedance for maximum power transfer over passband
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
100
100
Balanced
Output
Preliminary Data Sheet
Part Number 856134
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
10-Sep-2002
Page 3 of 6
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1575.42 -
MHz
Maximum Insertion Loss
1574.42 - 1576.42 MHz
-
1.4
1.7
dB
Absolute Attenuation
DC - 1450 MHz
1450 - 1475 MHz
1475 - 1525 MHz
1625
-
1675
MHz
1675
-
1775
MHz
1775
-
3155
MHz
3155
-
6000
MHz
30
27
14
10
20
30
35
38
31
20
13
22
35
45
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Input/Output Return Loss
1574.42 - 1576.42 MHz
10
16
-
dB
Output Amplitude Balance (|S
31
/S
21
|)
1574.42 - 1576.42 MHz
-
0.6
1
dB
Output Phase Balance
(S
31
)-
(S
21
)
1574.42 - 1576.42 MHz
180
187.5
195
degree
Nominal Source Impedance
- 50 -
Optimal Load Impedance (balanced)
(4)
-
120 + j35
-
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 for maximum power transfer over passband
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
100
100
Balanced
Output
Preliminary Data Sheet
Part Number 856134
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
10-Sep-2002
Page 4 of 6
Typical Performance
(at +25
o
C)
Preliminary Data Sheet
Part Number 856134
1575.42 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
10-Sep-2002
Page 5 of 6
Matching Schematics
50
Single-ended
Input
2,5
1
3
50
4
100
100
Balanced
Output
Marking
PCB Footprint
V
JJJYM
ID dot
Date code
Marking
code
logo
Sawtek
.71 SQ
.69
.23
2.08
2.59
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
0.254
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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