Data Sheet
Part Number 855653
374 MHz SAW Filter
Features
For WLAN applications
Usable bandwidth 17 MHz
Single-ended or Balanced operation
Configurable to 50 and 200 input and output
impedance
Ceramic Surface Mount Package (SMP)
Package
Pin Configuration
Surface Mount 7.01 x 5.51 x 1.63 mm
Bottom View
12
11
10
4
5
6
8
9
7
3
2
1
Pin No.
Description
3
Output
4
Output
return
9
Input
10
Input return
1,2,5,6
Case ground
7,8,11,12
Case ground
1.63 NOM.
1.78 MAX.
5.51
0.76
1.14
1.27
1.70
0.79
1.27
7.01
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width +0.15mm/-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 A
08-Oct-2002
Page 1 of 5
Data Sheet
Part Number 855653
374 MHz SAW Filter
Electrical Specifications
(1)
Operating Temperature Range:
(2)
-40 to +85
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 374 -
MHz
Insertion Loss
- 8.5
11
dB
Lower 3 dB Bandedge
Upper 3 dB Bandedge
-
382.5
362
386
365.5
-
MHz
MHz
Absolute Attenuation
274
-
341
MHz
341
-
352
MHz
352
-
357.5
MHz
390.5
-
396
MHz
396
-
430
MHz
430
-
474
MHz
50
40
10
10
30
45
55
60
50
37
45
50
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
Passband Ripple
- 0.6
1
dB
p-p
Group Delay Ripple
- 60
100
nsec
p-p
Triple Transit Suppression
30 40.5 -
dB
Source Impedance
(4)
- 50 -
Load Impedance
(4)
- 50 -
Substrate Material
- YZ
LiNbO
3
- -
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
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 500 ohms.
Test Circuit:
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,2,4,5,6,7
8,10,11,12
50
12pF
22nH
15pF
9
3
50
Subject to change or obsolescence without notice
Rev A
08-Oct-2002
Page 2 of 5
Data Sheet
Part Number 855653
374 MHz SAW Filter
Typical Performance
(at +25
o
C) (50
Input/Output)
Subject to change or obsolescence without notice
Rev A
08-Oct-2002
Page 3 of 5
Data Sheet
Part Number 855653
374 MHz SAW Filter
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,2,4,5,6,7
8,10,11,12
50
12pF
22nH
15pF
9
3
50
200
Balanced
input
1,2,5,6
7,8,11,12
200
27nH
22pF
22pF
9
10
3
4
15nH
200
200
Balanced
output
Marking
PCB Footprint
Date code
855653
SAWTEK
ID dot
XXXXXX
5.71
.99
7.21
1.34
1.34
.99
.28
.28
The date code consists of: day of the current year (Julian,
3 digits), last digit of the year (1 digit) and hour (2 digits)
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
Section A-A
0.3
2.2
7.3
5.8
1.5
8.0
4.0
2.0
A
A
1.5
16.0
7.5
1.75
Pad 1 ID dot
2.0
13.0
20.2
330
16.8
2.7
Direction of travel
102
Dimensions shown are nominal in millimeters
Packaging quantity: 3000 units/reel
Subject to change or obsolescence without notice
Rev A
08-Oct-2002
Page 4 of 5
Data Sheet
Part Number 855653
374 MHz SAW Filter
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
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 A
08-Oct-2002
Page 5 of 5
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