Preliminary Data Sheet
Part Number 856298
1220 MHz SAW Filter
Features
For broadband access applications
Usable bandwidth 10 MHz
Low loss
High attenuation
No impedance matching required for operation
at 200
Balanced operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 3.00 x 3.00 x 1.22 mm
Bottom View
4
8
7
6
5
3
2
1
Pin No.
Description
1
Input
2
Input
return
5
Output
return
6
Output
3,4,7,8
Case
Ground
0.69
1.22 NOM.
1.32 MAX.
0.75
0.60
1.20
3.00
0.60
3.00
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width
0.10mm
Body: Al
2
O
3
ceramic
Lid: Kovar, 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 -
27-Jun-2003
Page 1 of 5
Preliminary Data Sheet
Part Number 856298
1220 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-10 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1220 -
MHz
Maximum Insertion Loss
1215
-
1225
MHz
-
4.5
5.5
dB
Lower 1.5 dB Bandedge
(4)
Upper 1.5 dB Bandedge
-
1225
1209.5
1230.5
1215
-
MHz
MHz
Stopband Rejection
(4)
500
-
1152
MHz
1152
-
1190
MHz
1250
-
1288
MHz
1288 - 2000 MHz
55
30
30
55
60
55
55
50
-
-
-
-
dB
dB
dB
dB
Amplitude Ripple
(5)
1215
-
1225
MHz
-
0.5
1.5
dB
Group Delay Ripple
(5)
1215
-
1225
MHz
-
30
-
ns
Source Impedance
(6)
- 200 -
Load Impedance
(6)
- 200 -
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. All attenuation measurements will be referenced the insertion loss at center frequency
5. Maximum peak to adjacent valley measured over the defined range
6. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
200
Balanced
3,4,7,8
1
5
200
200
2
6
No impedance matching
required
Subject to change or obsolescence without notice
Rev -
27-Jun-2003
Page 2 of 5
Preliminary Data Sheet
Part Number 856298
1220 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
27-Jun-2003
Page 3 of 5
Preliminary Data Sheet
Part Number 856298
1220 MHz SAW Filter
Matching Schematics
200
Balanced
3,4,7,8
1
5
200
200
2
6
No impedance matching
required
Marking
PCB Footprint
Marking
code
BJ
Date code
JJJYM
logo
ID dot
Sawtek
3.20 SQ
.38
.23
.81
.96
.81
1.39
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
3.25
Section A-A
1.75
1.5
4.0
A
12.0
5.5
1.5
4.0
2.0
3.25
1.4
0.21
A
2.7
20.2
13.0
102
2.0
330
12.8
logo
Sawtek
Direction of travel
ID dot
Dimensions shown are nominal in millimeters
Packaging quantity: 5000 units/reel
Subject to change or obsolescence without notice
Rev -
27-Jun-2003
Page 4 of 5
Preliminary Data Sheet
Part Number 856298
1220 MHz SAW Filter
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-10
+70
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
S-Parameters
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
Soldering Profile
Other Technical Information
Subject to change or obsolescence without notice
Rev -
27-Jun-2003
Page 5 of 5
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