Preliminary Data Sheet
Part Number 855972
2441.75 MHz SAW Filter
Subject to change or obsolescence without notice Rev A 02-Aug-2001 Page 1 of 5
Features
• For ISM band applications (such as Bluetooth and
WLAN)
• Usable bandwidth 83.5 MHz
• High attenuation
• No impedance matching required for operation
at 50 Ω
• Single-ended operation
• Ceramic Surface Mount Package (SMP)
• Small size
•
Package Pin Configuration
Surface Mount 2.00 x 2.00 x 0.76 mm
43
21
Pin No. Description
1 Input
3 Output
2,4 Case ground
0.25x45°
CHAMFER
0.58
0.58
1.30
1.30
2.00
2.00
0.76 NOM.
0.84 MAX.
Dimensions shown are nominal in millimeters
All toler anc es are ±0.10mm
Body: Al2O3 cerami c
Lid: Kovar, Ni plated
Terminations: Au plating 0.5 - 1.0µm,
over a 2 - 6µm Ni plating
Preliminary Data Sheet
Part Number 855972
2441.75 MHz SAW Filter
Subject to change or obsolescence without notice Rev A 02-Aug-2001 Page 2 of 5
Target Electrical Specifications (1)
Operating Temperature: (2) +25oC
Parameter (3) Minimum Typical Maximum Unit
Center Frequency - 2441.75 - MHz
Maximum Insertion Loss
2400 - 2483. 5 MHz - 2.38 3.0 dB
Absolute Attenuation
0 - 2200 MHz
2900 - 3100 MHz
3100 - 4000 MHz
4000 - 5000 MHz
25
30
20
15
32
33
30
30
-
-
-
-
dB
dB
dB
dB
Input VSWR
2400 - 2483. 5 MHz - 2.5:1 - Ratio
Output VSWR
2400 - 2483. 5 MHz - 2.33:1 - Ratio
Passband Ripple
2400 - 2483. 5 MHz - 0.5 - dB
Terminating Source Impedance: (4) -50-
Ω
Terminating Load Impedance: (4) -50-
Ω
Operating Temperature Range -25-
oC
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. This is the optimum impedance in order to achieve the performance shown
Test Circuit:
50 Ω
Single-ended
2,4
13
50 50
Ω
ΩΩ
ΩΩ
ΩΩ
Ω
No impedance matching
required
Preliminary Data Sheet
Part Number 855972
2441.75 MHz SAW Filter
Subject to change or obsolescence without notice Rev A 02-Aug-2001 Page 3 of 5
Typical Performance (at +25oC)
Preliminary Data Sheet
Part Number 855972
2441.75 MHz SAW Filter
Subject to change or obsolescence without notice Rev A 02-Aug-2001 Page 4 of 5
Matching Schematics
50 Ω
Single-ended
2,4
13
50 50
Ω
ΩΩ
ΩΩ
ΩΩ
Ω
No impedance matching
required
Marking PCB Footprint
ID dot
Marking
code
logo
Sawtek
Date code
C
XXX
.51
.78 SQ
CHAMFER
2.08 SQ
.31x45°
Date code is the day of the current year in 3-digit Julian format This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
8.0
3.5
1.1
Section A-A
2.23
2.23 Ø1.0
A
A
4.0
1.75
Ø1.5
4.0
2.0
0.254
logo
Sawtek
ID dot
Direction of travel
2.0
Ø13.0
Ø20.2
Ø102
Ø330
8.8
2.7
Dimensions shown are nominal in millimeters
Packaging quantity: 5000 units/reel
Preliminary Data Sheet
Part Number 855972
2441.75 MHz SAW Filter
Subject to change or obsolescence without notice Rev A 02-Aug-2001 Page 5 of 5
Maximum Ra tings
Parameter Symbol Minimum Maximum Unit
Operating Temperature Range T TBD TBD oC
Storage Temperature Range Tstg -40 +85 oC
Warnings
• Electrostatic Sensit ive Device (ESD)
• Avoid ultrasonic exposure
Links to Additional Tech nical Inf orma tion
PCB Layout Tips Qualification Flowchart Solderi ng Profile
S-Parameters Reel and Packaging Label Other Technical Information
Contact Inf ormation
PO Box 609501
Orlando, FL 32860-9501
USA
Phone: +1 (407) 886- 8 860
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
