Preliminary Data Sheet
Part Number 855954
380 MHz SAW Filter
Subject to change or obsolescence without notice
Rev -
31-Oct-2001
Page 1 of 5
Features
Usable bandwidth of 4 MHz
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small size
Package
Pin Configuration
Surface Mount 3.80 x 3.80 x 1.27 mm
Bottom View
4
8
7
6
5
3
2
1
Pin No. Description
2
Output
3
Output
Return
6
Input
7
Input
Return
1,4,5,8
Case
ground
1.27 NOM.
1.45 MAX.
0.61
1.00
0.60
1.27
3.80
3.80
1.50
Dimensions shown are nominal in millimeters
All tolerances are
0.15mm except overall
length and width
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
Preliminary Data Sheet
Part Number 855954
380 MHz SAW Filter
Subject to change or obsolescence without notice
Rev -
31-Oct-2001
Page 2 of 5
Electrical Specifications
(1)
Temperature Range:
(2)
-30 to +70
o
C
Parameter
(3)
Minimum
Typical
Maximum
Unit
Center Frequency, f
0
- 380 -
MHz
Insertion Loss at 380 MHz
- 9.5
11
dB
3 dB Bandwidth
4.8 7.3 -
MHz
Passband Ripple
(4)
378.1 - 381.9 MHz
-
0.65
1.5
dB p-p
Phase Linearity
378 - 382 MHz
-
1.1
4
deg RMS
Relative Attenuation
360
-
373
MHz
387
-
400
MHz
28
28
38
36
-
-
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. Passband ripple is the worst case peak to adjacent valley over a frequency range defined by the measured roll off at the passband
edges
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
1,3,4
5,7,8
50
18pF
12nH
18pF
6
2
15nH
50
Preliminary Data Sheet
Part Number 855954
380 MHz SAW Filter
Subject to change or obsolescence without notice
Rev -
31-Oct-2001
Page 3 of 5
Typical Performance
(at +25
o
C)
Preliminary Data Sheet
Part Number 855954
380 MHz SAW Filter
Subject to change or obsolescence without notice
Rev -
31-Oct-2001
Page 4 of 5
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50
Single-ended
1,3,4
5,7,8
50
18pF
12nH
18pF
6
2
15nH
50
Marking
PCB Footprint
Date code
code
Marking
E
JJJYM
ID dot
Sawtek
logo
4.01
.81
.46
1.19
.81
1.19
1.70
.41
The date code consists of: JJJ = Julian day,
Y = last digit of year, M = manufacturing site code
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
1.5
2.0
0.3
8.0
4.0
4.1
4.1
1.8
1.75
5.5
12.0
1.5
A
A
Section A-A
330
ID dot
logo
Sawtek
Direction of travel
2.0
13.0
20.2
2.7
12.8
102
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Preliminary Data Sheet
Part Number 855954
380 MHz SAW Filter
Subject to change or obsolescence without notice
Rev -
31-Oct-2001
Page 5 of 5
Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Operating Temperature Range
T
-30
+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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