Data Sheet
Part Number 855735
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
11-Jul-2002
Page 1 of 5
Features
For broadband applications
Typical 3 dB bandwidth of 0.31 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Replaces Sawtek P/N 851541 (BW 3dB=0.25 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
Case
ground
7,8,9
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 and width +0.13mm/-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 855735
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
11-Jul-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
- 16.36
20
dB
Lower 1 dB Bandedge
(4)
Upper 1 dB Bandedge
-
70.065
69.90
70.09
69.935
-
MHz
MHz
Lower 3 dB Bandedge
(4)
Upper 3 dB Bandedge
-
70.13
69.84
70.16
69.87
-
MHz
MHz
Lower 40 dB Bandedge
(4)
Upper 40 dB Bandedge
69.5
-
69.56
70.46
-
70.5
MHz
MHz
Amplitude Variation
69.935 - 70.065
MHz
-
0.42
1
dB
Phase Linearity
69.935 - 70.065
MHz
-
0.84
3
deg
Group Delay Variation
69.935 - 70.065
MHz
-
249.70
470
nsec
Absolute Delay
- 3.19 -
sec
Relative Attenuation
(4)
10
-
68
MHz
72
-
80
MHz
80
-
135
MHz
135 - 145 MHz
145
-
200
MHz
50
40
50
40
50
69
52
64.5
49.5
63
-
-
-
-
dB
dB
dB
dB
Source Impedance:
(5)
- 50 -
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. 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
1,2,3,4
6,7,8,9
50
68pF
910nH
10
5
820nH
50
6pF
7pF
68pF
Data Sheet
Part Number 855735
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
11-Jul-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Data Sheet
Part Number 855735
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
11-Jul-2002
Page 4 of 5
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,2,3,4
6,7,8,9
50
68pF
910nH
10
5
820nH
50
6pF
7pF
68pF
Marking
PCB Footprint
XXXXXX
855735
SAWTEK
Date code
ID dot
1.95
1.22
.69
9.19
8.84
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
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 855735
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
11-Jul-2002
Page 5 of 5
Maximum Ratings
Parameter
Symbol Minimum
Typical
Maximum
Unit
Operating Temperature Range
T
0
+25
+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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