Data Sheet
Part Number 855737
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
27-Jun-2002
Page 1 of 5
Features
For broadband applications
Typical 3dB bandwidth of 1 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Replaces Sawtek P/N 851544 (BW 3dB=1 MHz)
Package
Pin Configuration
Surface Mount 24.60 x 9.00 x 2.31 mm
Bottom View
6
7
10 9 8
5
4
3
2
1
Pin No. Description
1
Input
return
5
Output
6
Output
return
10
Input
2,3,4
7,8,9
Case Ground
Case Ground
R0.5
2.31
2.31 NOM.
2.62 MAX.
3.53 x 4.83
1.02
1.80
9.00
1.02
1.91
24.6
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length
0.20mm and width +0.13/-0.20mm
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 855737
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
27-Jun-2002
Page 2 of 5
Electrical Specifications
(1)
Operating Temperature Range:
(2)
0 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency
- 70 -
MHz
Minimum Insertion Loss
- 22.2 23
dB
Lower 1 dB Bandedge
(4)
Upper 1 dB Bandedge
-
70.46
69.47
70.50
69.54
-
MHz
MHz
Lower 3 dB Bandedge
(4)
Upper 3 dB Bandedge
-
70.59
69.37
70.62
69.41
-
MHz
MHz
Lower 40 dB Bandedge
(4)
Upper 40 dB Bandedge
68.91
-
68.95
71.06
-
71.09
MHz
MHz
Amplitude Variation
69.54
-
70.46
MHz
-
0.55
1
dB p-p
Phase Linearity
69.54
-
70.46
MHz
-
2.2
5
deg p-p
Group Delay Variation
69.54
-
70.46
MHz
-
100
190
nsec
Relative Attenuation
(4)
10
-
68.5
MHz
68.5
-
68.91
MHz
71.09
-
75
MHz
75
-
110
MHz
110
-
122
MHz
122
-
135
MHz
135
-
200
MHz
48
40
40
50
35
36
50
53
45
45
55
37
40
65
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Source Impedance
(5)
- 50 -
Load Impedance
(5)
- 50 -
Substrate Material
- Quartz
- -
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 are measured relative to minimum insertion loss
5. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
50
10
5
7pF
50
1,2,3,4
6,7,8,9
820nH
220nH
Data Sheet
Part Number 855737
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
27-Jun-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Data Sheet
Part Number 855737
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
27-Jun-2002
Page 4 of 5
Matching Schematic
50
Single-ended
50
10
5
7pF
50
1,2,3,4
6,7,8,9
820nH
220nH
Marking
PCB Footprint
XXXXXX
855737
SAWTEK
Date code
ID dot
1.95
1.22
.69
9.19
8.84
Date code is the day of the current year in Julian format, last digit
of the year, and hour of the day
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
9.39
0.20
2.6
Section A-A
R0.75
12.0
A
1.5
25.6
2.0
0.36
20.2
1.75
4.0
1.5
A
40.4
44.0
20.2
13.0
2.7
102
330
44.8
Direction of travel
2.0
ID dot
Dimensions shown are nominal in millimeters
Packaging quantity: 1000 units/reel
Data Sheet
Part Number 855737
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
27-Jun-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
0
+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
Soldering Profile
S-Parameters
Other Technical Information
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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