Data Sheet
Features
•
•
•
•
•
•
•
For AMPS, TDMA, CDMA applications
Usable bandwidth 25 MHz
High attenuation
No impedance matching required for operation
at 50
Ω
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Part Number 855923
836.5 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
0.58
0.84
Pin No.
1
3
2,4
Description
Input
Output
Case ground
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 - 1.0µm,
over a 2 - 6µm
Ni
plating
Subject to change or obsolescence without notice
Rev H
04-Sep-2002
Page 1 of 6
Data Sheet
Operating Temperature Range:
(2)
-20 to +70
o
C
Part Number 855923
836.5 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Maximum Insertion Loss
824 - 849 MHz
Absolute Attenuation
DC - 760 MHz
760 - 790 MHz
790 - 804 MHz
869 - 894 MHz
894 - 1080 MHz
1080 - 2600 MHz
Amplitude Ripple
824 - 849 MHz
Input/Output Return Loss
824 - 849 MHz
Source Impedance
(4)
Load Impedance
(4)
Notes:
1.
2.
3.
4.
Minimum
-
-
35
30
35
38
35
32
-
9.5
-
-
Typical
836.5
2.2
37
33
38
42
37
35
0.8
12
50
50
Maximum
-
3.2
-
-
-
-
-
-
1.8
-
-
-
Unit
MHz
dB
dB
dB
dB
dB
dB
dB
dB p-p
dB
Ω
Ω
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
Test Circuit:
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
No impedance matching
required
Subject to change or obsolescence without notice
Rev H
04-Sep-2002
Page 2 of 6
Data Sheet
Operating Temperature Range:
(2)
-30 to +80
o
C
Part Number 855923
836.5 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Maximum Insertion Loss
824 - 849 MHz
825 - 848 MHz
Absolute Attenuation
DC - 760 MHz
760 - 790 MHz
790 - 804 MHz
869 - 894 MHz
894 - 1080 MHz
1080 - 2600 MHz
Amplitude Ripple
824 - 849 MHz
Input/Output Return Loss
824 - 849 MHz
Source Impedance:
(4)
Load Impedance:
(4)
Notes:
1.
2.
3.
4.
Minimum
-
-
-
35
30
35
38
35
32
-
9
-
-
Typical
836.5
2.4
2.2
37
33
38
42
37
35
0.8
12
50
50
Maximum
-
3.5
3.0
-
-
-
-
-
-
1.8
-
-
-
Unit
MHz
dB
dB
dB
dB
dB
dB
dB
dB p-p
dB
Ω
Ω
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
Test Circuit:
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
No impedance matching
required
Subject to change or obsolescence without notice
Rev H
04-Sep-2002
Page 3 of 6
Data Sheet
Part Number 855923
836.5 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev H
04-Sep-2002
Page 4 of 6
Data Sheet
Part Number 855923
836.5 MHz SAW Filter
Matching Schematics
1
3
50
Ω
50
Ω
Single-ended
50
Ω
2,4
No impedance matching
required
Marking
Sawtek
logo
Marking
code
PCB Footprint
2.59
2.08
C
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: 10000 units/reel
Subject to change or obsolescence without notice
Rev H
04-Sep-2002
Page 5 of 6
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