Preliminary Data Sheet
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
Part Number 855966
942.5 MHz SAW Filter
•
Package
Surface Mount 2.50 x 2.00 x 0.76 mm
Pin Configuration
Bottom View
2
3
1
0.76 NOM.
0.84 MAX.
2.50
0.94
5
4
2.00
0.50
1.38
Pin No.
1
2,5
3,4
Description
Input, Unbalanced
Input, Case ground
Output, Balanced
0.50
0.94
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 A
16-Aug-2001
Page 1 of 7
Preliminary Data Sheet
Operating Temperature Range:
(2)
+25
o
C
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Maximum Insertion Loss
925 - 960 MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
Minimum
-
Typical
942.5
Maximum
-
Unit
MHz
-
-
-
50
30
23
23
50
-
-
175
-0.5
-
-
2.3
2.5
0.2
65
38
25
28
65
1.8
1.7
180
0
50
225 || 48nH
3.2
1.6
-
-
-
-
-
2.4
2.3
185
0.5
-
-
dB
dB
dB p-p
dB
dB
dB
dB
dB
dB
dB
degree
dB
Ω
Ω
Amplitude Ripple
925 - 960 MHz
Absolute Attenuation
0 - 880 MHz
880 - 905 MHz
905 - 915 MHz
980 - 1050 MHz
1050 - 6000 MHz
Input VSWR
925 - 960 MHz
Output VSWR
925 - 960 MHz
Output Phase Balance
φ
(S
31
)-
φ
(S
21
)
925 - 960 MHz
Output Amplitude Balance (|S
31
/S
21
|)
925 - 960 MHz
Terminating Source Impedance:
(4)
Terminating Load Impedance:
(4)
Notes:
1.
2.
3.
4.
All specifications are based on the test circuit shown below
This specification is valid for room temperature only. The specification over the full temperature range(s) is available on the next
page(s)
Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
This is the complex conjugate of the unmatched filter’s impedance resulting in maximum power transfer
Test Circuit:
50
Ω
Single-ended
Input
1
50Ω
Ω
3
30nH
2,5
4
150Ω
Ω
150
Ω
Balanced Output
Subject to change or obsolescence without notice
Rev A
16-Aug-2001
Page 2 of 7
Preliminary Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-10 to +80
o
C
Parameter
(3)
Center Frequency
Maximum Insertion Loss
925 - 960 MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
Minimum
-
-
-
-
50
30
18
23
50
-
-
175
-0.5
-
-
Typical
(4)
942.5
2.5
2.7
0.9
65
38
22
27
65
2.1
2.1
180
0
50
225 || 48nH
Maximum
-
Unit
MHz
dB
dB
dB p-p
dB
dB
dB
dB
dB
dB
dB
degree
dB
Ω
Ω
3.5
1.9
-
-
-
-
-
2.4
2.3
185
0.5
-
-
Amplitude Ripple
925 - 960 MHz
Absolute Attenuation
0 - 880 MHz
880 - 905 MHz
905 - 915 MHz
980 - 1050 MHz
1050 - 6000 MHz
Input VSWR
925 - 960 MHz
Output VSWR
925 - 960 MHz
Output Phase Balance
φ
(S
31
)-
φ
(S
21
)
925 - 960 MHz
Output Amplitude Balance (|S
31
/S
21
|)
925 - 960 MHz
Terminating Source Impedance:
(5)
Terminating Load Impedance:
(5)
Notes:
1.
2.
3.
4.
5.
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
o
Typical performance at +80 C
This is the complex conjugate of the unmatched filter’s impedance resulting in maximum power transfer
Test Circuit:
50
Ω
Single-ended
Input
1
50Ω
Ω
3
30nH
2,5
4
150Ω
Ω
150
Ω
Balanced Output
Subject to change or obsolescence without notice
Rev A
16-Aug-2001
Page 3 of 7
Preliminary Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-20 to +80
o
C
Parameter
(3)
Center Frequency
Maximum Insertion Loss
925 - 960 MHz
Excluding losses due to matching
Including losses in matching test circuit shown below
Minimum
-
-
-
-
50
30
18
22
50
-
-
175
-0.5
-
-
Typical
(4)
942.5
2.6
2.7
0.7
65
38
22
27
65
1.8
1.8
180
0
50
225 || 48nH
Maximum
-
Unit
MHz
dB
dB
dB p-p
dB
dB
dB
dB
dB
dB
dB
degree
dB
Ω
Ω
3.7
2.1
-
-
-
-
-
2.4
2.3
185
0.5
-
-
Amplitude Ripple
925 - 960 MHz
Absolute Attenuation
0 - 880 MHz
880 - 905 MHz
905 - 915 MHz
980 - 1050 MHz
1050 - 6000 MHz
Input VSWR
925 - 960 MHz
Output VSWR
925 - 960 MHz
Output Phase Balance
φ
(S
31
)-
φ
(S
21
)
925 - 960 MHz
Output Amplitude Balance (|S
31
/S
21
|)
925 - 960 MHz
Terminating Source Impedance:
(5)
Terminating Load Impedance:
(5)
Notes:
1.
2.
3.
4.
5.
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
o
Typical performance at +80 C
This is the complex conjugate of the unmatched filter’s impedance resulting in maximum power transfer
Test Circuit:
50
Ω
Single-ended
Input
1
50Ω
Ω
3
30nH
2,5
4
150Ω
Ω
150
Ω
Balanced Output
Subject to change or obsolescence without notice
Rev A
16-Aug-2001
Page 4 of 7
Preliminary Data Sheet
Part Number 855966
942.5 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev A
16-Aug-2001
Page 5 of 7
PCB Design
京公网安备 11010802033920号
EEWORLD
