Preliminary Data Sheet
Part Number 855990
1220 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
13-May-2002
Page 1 of 5
Features
For broadband applications
Usable bandwidth 10 MHz
Low insertion loss
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
8
7
6
5
4
3
2
1
1.20
0.75
0.60
3.00
0.69
0.60
3.00
1.22 NOM.
1.32 MAX.
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
Pin No.
Description
1
Input
3
Balanced input
5
Balanced output
7
Output
2,4,6,8
Case ground
Preliminary Data Sheet
Part Number 855990
1220 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
13-May-2002
Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-40 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 1220 -
MHz
Maximum Insertion Loss
1215
-
1225
MHz
-
3.5
5
dB
Lower 1.5 dB Bandedge
(4)
Upper 1.5 dB Bandedge
(4)
-
1225
1207.855
1231.992
1215
-
MHz
MHz
Amplitude Ripple
(5)
1215
-
1225
MHz
-
1
1.5
dB p-p
Stopband Rejection
(4)
500
-
1128
MHz
1128
-
1136
MHz
1172
-
1180
MHz
1290 - 1600 MHz
50
50
40
40
53
53
46
50
-
-
-
-
dB
dB
dB
dB
Group Delay Variation
1215
-
1225
MHz
-
15
-
nsec
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. Referenced to the minimum insertion loss of the device.
5. Amplitude ripple will measure the worst case peak to adjacent valley within the specified frequency points
6. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
200
Balanced
2,4,6,8
1
5
200
200
3
7
No impedance matching
required
Preliminary Data Sheet
Part Number 855990
1220 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
13-May-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Preliminary Data Sheet
Part Number 855990
1220 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
13-May-2002
Page 4 of 5
Matching Schematics
200
Balanced
2,4,6,8
1
5
200
200
3
7
No impedance matching
required
Marking
PCB Footprint
Marking
code
7
Date code
JJJYM
logo
ID dot
Sawtek
.96
.81
.38
.81
.23
1.39
3.20 SQ
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
Preliminary Data Sheet
Part Number 855990
1220 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
13-May-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-40
+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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