855549
242.625 MHz SAW Filter
Applications
General Purpose
For IF applications
Product Features
Typical 1dB bandwidth of 1.3 MHz
Low loss
High Attenuation
Single-ended operation
Ceramic Surface Mount Package (SMP)
Small Size
Dimensions: 19.00 x 6.50 x 1.75mm
Hermetically sealed
RoHS
compliant,
Pb-free
Functional Block Diagram
Top view
Input Gnd Gnd Gnd Gnd
10
9
8
7
6
1
2
3
4
5
Gnd Gnd Gnd Gnd Output
General Description
The 855549 is a high-performance IF SAW filter with a
center frequency of 242.625 MHz and a 1dB bandwidth of
1.3 MHz.
It features low loss with excellent attenuation, and is
designed to be used with a single ended input and output.
This device is RoHS compliant and Pb-free.
Pin Configuration
Pin # SE
10
5
1,6
2,3,4,7,8,9
Description
Input
Output
Ground
Case ground
Ordering Information
Part No.
855549
855549-EVB
Description
packaged part
evaluation board
Standard T/R size = 2000 units/reel.
Data Sheet: Rev - 5/31/11
© 2011 TriQuint Semiconductor, Inc.
- 1 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
855549
242.625 MHz SAW Filter
Specifications
Electrical Specifications
(1)
Specified Temperature Range:
(2)
+25 ºC
Parameter
(3)
Center Frequency
Minimum Insertion Loss
1.0 dB Lower Bandedge
(5)
1.0 dB Upper Bandedge
(5)
Passband Ripple
(6)
(over 100% of 1dB
bandwidth)
Conditions
Min
-
-
-
243.125
-
Typical
(4)
242.625
18.7
242.006
243.310
0.62
1.4
57
56
50
50
Max
-
11
242.125
-
0.75
5
-
-
-
-
Units
MHz
dB
MHz
MHz
dB p-p
deg p-p
dB
dB
Phase Ripple
Relative Attenuation
(5)
Source Impedance (single-ended)
(7)
Load Impedance (single-ended)
(7)
242.5 – 242.751 MHz
20 – 240.151 MHz
245.15 – 465.25 MHz
-
-
-
40
40
-
-
Notes:
1. All specifications are based on the TriQuint schematic for the main reference design shown on page 3
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. Typical values are based on average measurements at room temperature
5. Relative to Minimum Insertion Loss
6. Passband Ripple is defined as the worst case difference between a peak and an adjacent valley within defined frequency points
7. This is the optimum impedance in order to achieve the performance shown
Absolute Maximum Ratings
Parameter
Operating Temperature
Storage Temperature
8.
(8)
Rating
-40 to +85
o
C
-40 to +85
o
C
Device may operate over this range with degraded Electrical Specifications
Operation of this device outside the parameter ranges given above may cause permanent damage.
Data Sheet: Rev - 5/31/11
© 2011 TriQuint Semiconductor, Inc.
- 2 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
855549
242.625 MHz SAW Filter
Reference Design – 50
Schematic
43nH
10
5
47pF
1,2,3,4
6,7,8,9
50
43nH
SE Input, 50
SE Output
50
Single-ended
Input
50
47pF
50
Single-ended
Output
Notes:
1.
Actual matching values may vary due to PCB layout and parasitics
PC Board
Mounting Configuration
8.86
2.51
960656
L1
C1
SAWTEK
855549
XXXX
6.70
L2
C2
2.00
1.22
.69
Notes:
Top, middle & bottom layers: 1 oz copper
Substrates: FR4 dielectric, .031” thick
Finish plating: Nickel: 3-8µm thick, Gold: .03-.2µm thick
Hole plating: Copper min .0008µm thick
Notes:
1.
All dimensions are in millimeters.
2.
This footprint represents a recommendation only.
Bill of Material
Reference Desg.
L1
L2
C1
C2
SMA
PCB
Value
43nH
43nH
47pF
47pF
N/A
N/A
Description
Coil Wire-wound, 0805, 5%
Coil Wire-wound, 0805, 5%
Chip Capacitor, 0805, 5%
Chip Capacitor, 0805, 5%
SMA connector
3-layer
Manufacturer
Coilcraft
Coilcraft
MuRata
MuRata
Radiall USA Inc.
multiple
Part Number
0805CS-431XJLC
0805CS-431XJLC
GRM2165C1H470JZ01
GRM2165C1H470JZ01
9602-1111-018
960656
Data Sheet: Rev - 5/31/11
© 2011 TriQuint Semiconductor, Inc.
- 3 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
855549
242.625 MHz SAW Filter
Typical Performance
(at room temperature)
Data Sheet: Rev - 5/31/11
© 2011 TriQuint Semiconductor, Inc.
- 4 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
855549
242.625 MHz SAW Filter
Mechanical Information
Package Information, Dimensions and Marking
SAWTEK
855549
XXXX
Date Code
Package Style: SMP-75
Dimensions: 19.00 x 6.50 x 1.75mm
Body:
Al
2
O
3
ceramic
Lid:
Kovar, Ni
plated
Terminations:
Au
plating 0.5 - 1.0μm, over a 2-6μm
Ni
plating
All dimensions shown are nominal in millimeters
All tolerances are ±0.15mm except overall length and width
±0.10mm
ID Dot
1.75 NOM.
1.96 MAX.
0.76
19.0
1.80
1.91
R0.51
6.50
2.31
1.02
Tape and Reel Information
Standard T/R size = 2000 units/reel. All dimensions are in millimeters
32.8
2.7
Ø330
ID dot
Section A-A
0.3
2.0
4.0
Ø1.5
R0.75
A 1.75
14.2
Ø102
19.6
Ø20.2
Ø13.0
2.0
Direction of travel
0.20
2.3
7.1
12.0
Ø1.5
A
32.0
28.4
Data Sheet: Rev - 5/31/11
© 2011 TriQuint Semiconductor, Inc.
- 5 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
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