Preliminary Data Sheet
Features
•
•
•
•
•
•
For WCDMA applications
Usable bandwidth 3.84 MHz
High attenuation
Balanced operation
Ceramic Surface Mount Package (SMP)
Small size
Part Number 855971
190 MHz SAW Filter
•
Package
Surface Mount 5.00 x 3.00 x 1.24 mm
Pin Configuration
1
1.24 NOM.
1.35 MAX.
0.69
2
3
4
8
7
6
5
5.00
1.30
1.27
3.00
0.79
0.51
Pin No.
1
2
5
6
3,4,7,8
Description
Input return
Input
Output return
Output
Case Ground
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 - 1.0µm,
over a 2 - 6µm
Ni
plating
Subject to change or obsolescence without notice
Rev -
25-Jul-2001
Page 1 of 5
Preliminary Data Sheet
Operating Temperature:
(2)
-20 to +70
o
C
Part Number 855971
190 MHz SAW Filter
Electrical Specifications
(1)
Parameter
(3)
Center Frequency
Insertion Loss
at 190 MHz
1 dB Bandwidth
Propagation Delay Time
at 190 MHz
Rejection
170 - 180 MHz
180 - 185 MHz
195 - 200 MHz
200 - 210 MHz
Ultimate Rejection
Terminating Source Impedance:
(4)
Terminating Load Impedance:
(4)
Notes:
1.
2.
3.
4.
All specifications are based on the test circuit shown below
In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
This is the optimum impedance in order to achieve the performance shown
Minimum
-
-
3.84
-
30
25
25
30
-
-
-
Typical
190
7.8
5.7
0.42
33
37
37
33
50
50
50
Maximum
-
9
-
0.5
-
-
-
-
-
-
-
Unit
MHz
dB
MHz
µsec
dB
dB
dB
dB
dB
Ω
Ω
Test Circuit:
82pf
2
6
2pF
1
82pf
3,4,7,8
5
8.2pf
56nH
50Ω
Ω
8.2pf
50
Ω
Balanced
50Ω
Ω
18nH
Subject to change or obsolescence without notice
Rev -
25-Jul-2001
Page 2 of 5
Preliminary Data Sheet
Part Number 855971
190 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev -
25-Jul-2001
Page 3 of 5
Preliminary Data Sheet
Actual matching values may vary due to PCB layout and parasitics
82pf
2
6
2pF
1
82pf
3,4,7,8
5
Part Number 855971
190 MHz SAW Filter
Matching Schematics
8.2pf
50Ω
Ω
50
Ω
Balanced
50Ω
Ω
18nH
56nH
8.2pf
Marking
.71
Sawtek
logo
Marking
code
PCB Footprint
.56
1.22
1.50
3.20
.99
971
XXX
Pad 1
ID dot
Date code
4.52
Date code is the day of the current year in 3-digit Julian format
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
12.8
2.7
Ø330
ID dot
Sawtek
logo
0.3
4.0
2.0
Ø1.5
A
1.75
5.5
5.3
12.0
Ø102
Ø20.2
Ø13.0
2.0
Direction of travel
1.8
Section A-A
3.3
8.0
Ø1.5
A
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Subject to change or obsolescence without notice
Rev -
25-Jul-2001
Page 4 of 5
Preliminary Data Sheet
Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855971
190 MHz SAW Filter
Symbol
T
T
stg
Minimum
-20
-40
Maximum
+70
+85
Unit
o
o
C
C
Warnings
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
Reel and Packaging Label
Soldering Profile
Other Technical Information
Contact Information
PO Box 609501
Orlando, FL 32860-9501
USA
Subject to change or obsolescence without notice
Phone: +1 (407) 886-8860
Fax: +1 (407) 886-7061
Email:
custservice@sawtek.com
Web:
www.sawtek.com
Rev -
Or contact one of our worldwide
network of
sales offices,
representatives or distributors
25-Jul-2001
Page 5 of 5
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