Data Sheet
Part Number 855898
374 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
06-Aug-2002
Page 1 of 5
Features
For WLAN applications
Usable bandwidth of 17 MHz
High attenuation
Balanced or Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 5.00 x 5.00 x 1.32 mm
Bottom View
4
8
7
6
5
3
2
1
Pin No.
Description
2
Input
return
3
Input
6
Output
return
7
Output
1,4,5,8
Case
Ground
1.32 NOM.
1.52 MAX.
0.66
1.27
1.27
0.64
2.08
5.00
5.00
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width
0.15/0.10mm
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
Data Sheet
Part Number 855898
374 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
06-Aug-2002
Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-10 to +80
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency, f
0
- 374 -
MHz
Minimum Insertion Loss
- 8.5
10.5
dB
3 dB Bandwidth
17 20.5 -
MHz
Relative Attenuation
(4)
309
-
352
MHz
352
-
357.5
MHz
390.5
-
392
MHz
392
-
396
MHz
396
-
439
MHz
439
-
454
MHz
40
35
35
35
38
40
50
50
45
40
42
45
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
Passband Variation
- 0.5 1.0
dB
Group Delay Variation
- 40
100
nsec
Triple Transit Suppression
30 40 -
dB
Optimal Source Impedance:
(5)
- 50 -
Optimal Load Impedance:
(5)
- 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. Relative to minimum insertion loss
5. Sawtek's production specifications reflect the typical performance in a 50 ohm single-ended system. This filter can be used in both
single-ended and/or differential modes at each port. In addition, similar performance can be achieved in source and load
impedances ranging from 50 to 1000.
Test Circuit:
50
Single-ended
1,2,4,5,6,8
50
18pF
3
7
50
9.5nH
6pF
15nH
Data Sheet
Part Number 855898
374 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
06-Aug-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Data Sheet
Part Number 855898
374 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
06-Aug-2002
Page 4 of 5
Matching Schematics
50
Single-ended
1,2,4,5,6,8
50
18pF
3
7
50
9.5nH
6pF
15nH
200
Balanced
1,4,5,8
200
15pF
16nH
15pF
470pf
470pf
2
3
6
7
27nH
200
Marking
PCB Footprint
Date code
D
JJJYM
ID dot
logo
Sawtek
code
Marking
1.47
5.20
2.28
.84
1.47
.84
.43
.71
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
12.0
Section A-A
A
A
0.3
1.8
5.25
5.25
1.5
1.5
8.0
4.0
2.0
5.5
1.75
2.7
Direction of travel
13.0
20.2
330
2.0
102
12.8
ID dot
Sawtek
logo
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Data Sheet
Part Number 855898
374 MHz SAW Filter
Subject to change or obsolescence without notice
Rev B
06-Aug-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-10
+80
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
Reel and Packaging Label
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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