Data Sheet
Part Number 856083
1855 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
05-Sep-2002
Page 1 of 5
Features
For Korean PCS applications, Rx
Usable bandwidth 30 MHz
Low loss
High attenuation
No impedance matching required for operation
at 50
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 2.00 x 2.00 x 0.76 mm
Bottom View
4
3
2
1
Pin No.
Description
1
Input
3
Output
2,4
Case
ground
0.25x45
CHAMFER
0.58
0.58
1.30
1.30
2.00
2.00
0.76 NOM.
0.84 MAX.
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
Data Sheet
Part Number 856083
1855 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
05-Sep-2002
Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-30 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1855 -
MHz
Insertion Loss
1840
-
1870
MHz
-
1.6
2.5
dB
Amplitude Ripple
1840 - 1870 MHz
-
0.2
1
dB p-p
Absolute Attenuation
1440
-
1470
MHz
1750
-
1780
MHz
1930
-
1960
MHz
2240
-
2270
MHz
30
25
35
30
38
31
45
35
-
-
-
-
dB
dB
dB
dB
Input/Output VSWR
1840
-
1870
MHz
-
1.6:1
2:1
dB
Source Impedance:
(4)
- 50 -
Load Impedance:
(4)
- 50 -
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 in order to achieve the performance shown
Test Circuit:
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Data Sheet
Part Number 856083
1855 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
05-Sep-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Data Sheet
Part Number 856083
1855 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
05-Sep-2002
Page 4 of 5
Matching Schematics
50
Single-ended
2,4
1
3
50
50
No impedance matching
required
Marking
PCB Footprint
ID dot
Marking
code
logo
Sawtek
Date code
G
JJJYM
.51
.78 SQ
CHAMFER
2.08 SQ
.31x45
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
8.0
3.5
1.1
Section A-A
2.23
2.23
1.0
A
A
4.0
1.75
1.5
4.0
2.0
0.254
8.5
2.7
102
13.0
20.2
330
Direction of travel
2.0
logo
Sawtek
ID dot
Dimensions shown are nominal in millimeters
Packaging quantity: 10000 units/reel
Data Sheet
Part Number 856083
1855 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
05-Sep-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-30
+85
o
C
Storage Temperature Range
T
stg
-40 +85
o
C
Warnings
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
Qualification Flowchart
Soldering Profile
S-Parameters
Other Technical Information
Sawtek's liability is limited only to the Surface Acoustic Wave (SAW) component(s) described in this data sheet. Sawtek does not accept any liability for
applications, processes, circuits or assemblies which are implemented using any Sawtek component described in this data sheet.
Contact Information
PO Box 609501
Orlando, FL 32860-9501
USA
Phone: +1 (407) 886-8860
Fax: +1 (407) 886-7061
Email:
custservice@sawtek.com
Web:
www.sawtek.com
Or contact one of our worldwide
Network of
sales offices,
Representatives or distributors
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