Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Features
For EGSM applications
Usable bandwidth 35 MHz
High attenuation
Superior amplitude and phase balance
Single-ended input
Balanced output
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,
Unbalanced
2,5
Input, Case ground
3,4
Output,
Balanced
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
Subject to change or obsolescence without notice
Rev E
30-Jan-2003
Page 1 of 8
Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
+25
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 942.5 -
MHz
Maximum Insertion Loss
925
-
960
MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
-
-
2.3
2.5
-
3.2
dB
dB
Amplitude Ripple
925
-
960
MHz
-
0.2
1.6
dB p-p
Absolute Attenuation
0
-
880
MHz
880
-
905
MHz
905
-
915
MHz
980
-
1050
MHz
1050
-
6000
MHz
50
30
20
23
50
65
38
22
28
65
-
-
-
-
-
dB
dB
dB
dB
dB
Input VSWR
925
-
960
MHz
-
1.8
2.4
dB
Output VSWR
925
-
960
MHz
-
1.7
2.3
dB
Output Phase Balance
(S
31
)-
(S
21
)
925
-
960
MHz
175
180
185
degree
Output Amplitude Balance (|S
31
/S
21
|)
925
-
960
MHz
-0.5
0
0.5
dB
Optimal Source Impedance
(4)
- 50 -
Optimal Load Impedance
(4)
-
225 || 48nH
-
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 complex conjugate of the unmatched filter's impedance resulting in maximum power transfer
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
150
30nH
150
Balanced Output
Subject to change or obsolescence without notice
Rev E
30-Jan-2003
Page 2 of 8
Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-10 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 942.5 -
MHz
Maximum Insertion Loss
925
-
960
MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
-
-
2.5
2.7
-
3.5
dB
dB
Amplitude Ripple
925
-
960
MHz
-
0.9
1.9
dB p-p
Absolute Attenuation
0
-
880
MHz
880
-
905
MHz
905
-
915
MHz
980
-
1050
MHz
1050
-
6000
MHz
50
30
18
23
50
65
38
22
27
65
-
-
-
-
-
dB
dB
dB
dB
dB
Input VSWR
925
-
960
MHz
-
2.1
2.4
dB
Output VSWR
925
-
960
MHz
-
2.1
2.3
dB
Output Phase Balance
(S
31
)-
(S
21
)
925
-
960
MHz
175
180
185
degree
Output Amplitude Balance (|S
31
/S
21
|)
925
-
960
MHz
-0.5
0
0.5
dB
Optimal Source Impedance
(4)
- 50 -
Optimal Load Impedance
(4)
-
225 || 48nH
-
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 complex conjugate of the unmatched filter's impedance resulting in maximum power transfer
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
150
30nH
150
Balanced Output
Subject to change or obsolescence without notice
Rev E
30-Jan-2003
Page 3 of 8
Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-20 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 942.5 -
MHz
Maximum Insertion Loss
925
-
960
MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
-
-
2.6
2.7
-
3.7
dB
dB
Amplitude Ripple
925
-
960
MHz
-
0.7
2.1
dB p-p
Absolute Attenuation
0
-
880
MHz
880
-
905
MHz
905
-
915
MHz
980
-
1050
MHz
1050
-
6000
MHz
50
30
18
22
50
65
38
22
27
65
-
-
-
-
-
dB
dB
dB
dB
dB
Input VSWR
925
-
960
MHz
-
1.8
2.4
dB
Output VSWR
925
-
960
MHz
-
1.8
2.3
dB
Output Phase Balance
(S
31
)-
(S
21
)
925
-
960
MHz
175
180
185
degree
Output Amplitude Balance (|S
31
/S
21
|)
925
-
960
MHz
-0.5
0
0.5
dB
Optimal Source Impedance
(4)
- 50 -
Optimal Load Impedance
(4)
-
225 || 48nH
-
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 complex conjugate of the unmatched filter's impedance resulting in maximum power transfer
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
150
30nH
150
Balanced Output
Subject to change or obsolescence without notice
Rev E
30-Jan-2003
Page 4 of 8
Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-20 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 942.5 -
MHz
Maximum Insertion Loss
925
-
960
MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
-
-
2.6
2.9
-
3.9
dB
dB
Amplitude Ripple
925
-
960
MHz
-
0.7
2.1
dB p-p
Absolute Attenuation
0
-
880
MHz
880
-
905
MHz
905
-
915
MHz
980
-
1050
MHz
1050
-
6000
MHz
50
30
18
22
50
65
38
22
27
65
-
-
-
-
-
dB
dB
dB
dB
dB
Input VSWR
925
-
960
MHz
-
1.8
2.4
dB
Output VSWR
925
-
960
MHz
-
1.8
2.3
dB
Output Phase Balance
(S
31
)-
(S
21
)
925
-
960
MHz
175
180
185
degree
Output Amplitude Balance (|S
31
/S
21
|)
925
-
960
MHz
-0.5
0
0.5
dB
Optimal Source Impedance
(4)
- 50 -
Optimal Load Impedance
(4)
-
225 || 48nH
-
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 complex conjugate of the unmatched filter's impedance resulting in maximum power transfer
Test Circuit:
50
Single-ended
Input
2,5
1
3
50
4
100
18nH
3pF
3pF
100
Balanced Output
Subject to change or obsolescence without notice
Rev E
30-Jan-2003
Page 5 of 8
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