Data Sheet
Part Number 856338
970 MHz SAW Filter
Features
• For Wireless LAN applications
• Usable bandwidth 9 MHz
• High attenuation
• Single-ended operation
• Ceramic Surface Mount Package (SMP)
• Hermetic
• RoHS compliant (2002/95/EC), Pb-free
•
Package Pin Configuration
Surface Mount 9.10 x 4.80 x 1.24 mm Bottom View
9
10
876
5
4
3
21
Pin No. Description
4 RF Output
9 RF Input
1,2,3,5 Case Ground
6,7,8,10 Case Ground
9.10
0.69
2.54
1.000.80
2.54
4.80
1.50
1.24 NOM.
1.35 MAX.
Dimensions shown are nominal in millimeters
All tolerances are ±0.15mm except overall
length and width +0.10mm/-0.10mm
Body: Al2O3 ceramic
Lid: Kovar, Ni plated
Terminations: Au plating 0.5 - 1.0µm,
over a 2 - 6µm Ni plating
Pb
Subject to change or obsolescence without notice Rev B 12-Apr-2006 Page 1 of 5
Data Sheet
Part Number 856338
970 MHz SAW Filter
Electrical Specifications (1)
Operating Temperature Range: (2) -40 to +85 oC
Parameter (3) Minimum Typical Maximum Unit
Center Frequency (4) 969.20 970.06 970.80 MHz
Maximum Insertion Loss at 970 MHz - 24 27 dB
Lower 3 dB Bandedge (5)
Upper 3 dB Bandedge
-
974.5
964.4
975.3
965.5
-
MHz
MHz
Lower 35 dB Bandedge (5)
Upper 35 dB Bandedge
961.5
-
963.0
977.4
-
978.5
MHz
MHz
Passband Ripple (over 3 dB bandwidth) - 0.41 1.0 dB p-p
Passband Ripple (over any 300 kHz bandwidth) - 0.23 0.3 dB p-p
Passband Amplitude Tilt - 0.22 1.0 dB
Phase Ripple (over 3 dB bandwidth) - 4.3 8.0 deg
Phase Ripple (over any 300 kHz bandwidth) - 0.5 3.0 deg
Group Delay - 0.84 1.0 µsec
Group Delay Variation (over 3 dB bandwidth) - 34 130 nsec
Relative Attenuation (5)
10 - 945 MHz
995 - 1400 MHz
35
35
40
40
-
-
dB
dB
Adjacent Channel Rejection (Integrated Power) (5)
955.8 - 964.2 MHz
975.8 - 984.2 MHz
10
10
18
18
-
-
dB
dB
Optimal Source Impedance (6) - 50 -
Ω
Optimal Load Impedance (6) - 50 -
Ω
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. Evaluated as the mean of the 3dB frequencies relative to minimum insertion loss
5. Referenced to minimum insertion loss
6. 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 Ω
Single-ended
1,2,3,5
6,7,8,10
50Ω
5pF
94
50Ω
5pf
Subject to change or obsolescence without notice Rev B 12-Apr-2006 Page 2 of 5
Data Sheet
Part Number 856338
970 MHz SAW Filter
Typical Performance (at +25oC)
Subject to change or obsolescence without notice Rev B 12-Apr-2006 Page 3 of 5
Data Sheet
Part Number 856338
970 MHz SAW Filter
Matching Schematics
Actual matching values may vary due to PCB layout and parasitics
50 Ω
Single-ended
1,2,3,5
6,7,8,10
50Ω
7pF
94
3.3nH
50Ω
3nH 3pF
Marking PCB Footprint
ID Dot Date Code
XXXXXX
856338
SAWTEK
9.29
1.19
1.01
1.70
5.00
3.55
1.53
1.01
1.19
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
5.1 8.0
Ø1.5
4.0
2.0
0.3
1.6
Section A-A
9.4
A1.75
7.5
16.0
A
Ø1.5
ID dot
2.0
Ø13.0
Ø20.2
Ø102
2.7
16.8
Ø330
Direction of travel
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Subject to change or obsolescence without notice Rev B 12-Apr-2006 Page 4 of 5
Data Sheet
Part Number 856338
970 MHz SAW Filter
Maximum Ratings
Parameter Symbol Minimum Maximum Unit
Operating Temperature Range T -40 +85 oC
Storage Temperature Range Tstg -55 +85
oC
Important Notes
Warnings
• Electrostatic Sensitive Device (ESD)
• Avoid ultrasonic exposure
RoHS Compliance
• This product complies with EU directive 2002/95/EC (RoHS)
Solderability
• Compatible with JEDEC J-STD-020C Pb-free process, 260°C peak reflow temperature (see soldering profile)
Links to Additional Technical Information
PCB Layout Tips Qualification Flowchart Soldering Profile
S-Parameters RoHS information 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
Pb
Subject to change or obsolescence without notice Rev B 12-Apr-2006 Page 5 of 5
