Preliminary Data Sheet
Part Number 855736
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
06-Sep-2002
Page 1 of 5
Features
For IF applications
Typical 3 dB bandwidth of 0.7 MHz
High attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Replaces Sawtek P/N 851542 (BW 3dB = 0.5 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
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
0.20mm
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
Preliminary Data Sheet
Part Number 855736
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
06-Sep-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
- 21.3
22
dB
Upper 1 dB Point
(4)
Lower 1 dB Point
(4)
70.155
-
70.205
69.795
-
69.845
MHz
MHz
Upper 3 dB Point
(4)
Lower 3 dB Point
(4)
70.31
-
70.35
69.65
-
69.69
MHz
MHz
Upper 40 dB Point
(4)
Lower 40 dB Point
(4)
-
69.165
70.815
69.185
70.836
-
MHz
MHz
Absolute Attenuation
10
-
68
MHz
72
-
85
MHz
85
-
108
MHz
108
-
140
MHz
140
-
200
MHz
60
45
60
50
60
62
55
62
55
62
-
-
-
-
-
dB
dB
dB
dB
dB
Amplitude Variation
69.85 - 70.15 MHz
-
0.8
1
dB p-p
Phase Ripple
69.85
-
70.15
MHz
-
1.2
3
deg p-p
Group Delay Variation
69.85
-
70.15
MHz
-
100
200
nsec p-p
Source Impedance:
(6)
- 50 -
Load Impedance:
(6)
- 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:
50
Single-ended
1,2,3,4
6,7,8,9
50
1000nH
10
5
1000nH
50
5pF
6pF
33pF
Preliminary Data Sheet
Part Number 855736
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
06-Sep-2002
Page 3 of 5
Typical Performance
(at +25
o
C)
Preliminary Data Sheet
Part Number 855736
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
06-Sep-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
1000nH
10
5
1000nH
50
5pF
6pF
33pF
Marking
PCB Footprint
XXXXXX
855736
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
Preliminary Data Sheet
Part Number 855736
70 MHz SAW Filter
Subject to change or obsolescence without notice
Rev A
06-Sep-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
RF Power
P
in
- +10
dBm
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
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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