Preliminary
For prototype or pre-production sample please contact RFM Sales.
®
SF2110D
305.00 MHz
•
•
•
•
Low Insertion Loss
3.8 X 3.8 X 1.2 mm Surface-Mount Case
Differential 750 Ohm IN and 900 Ohm Out
Complies with Directive 2002/95/EC (RoHS)
Pb
SAW Filter
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Max. DC voltage between any 2 terminals
Storage Temperature Range
Suitable for lead-free soldering - Max Soldering Profile
Value
+10
30
-40 to +85
260°C for 30 s
Units
dBm
VDC
°C
SM3838-8
Electrical Characteristics
Characteristic
Center Frequency
Insertion Loss
Amplitude Ripple (p-p)
fc-5 to fc+5 MHz
Low Side Attenuation (266~290)
High Side Attenuation (320~344)
Delay Ripple (p-p)
fc-5 to fc+5 MHz
Group Delay in Passband
Case Style
Lid Symbolization (Y=year, WW=week, S=shift) See note 4
Sym
f
C
IL
Notes
1
1, 2
35
35
1, 2, 3
6
Min
Typ
305
9
0.7
45
50
30
Max
12
2.0
Units
MHz
dB
dB
dB
100
ns
500
SM3838-8 3.8 x 3.8 mm Nominal Footprint
608 YWWS
Notes:
1. Unless noted otherwise, all specifications apply over the operating
temperature range with filter soldered to the specified demonstration
board with impedance matching to 50
Ω
and measured with 50
Ω
network analyzer.
2. Unless noted otherwise, all frequency specifications are referenced
to the nominal center frequency, fc.
3. Rejection is measured as attenuation below the minimum IL point in
the passband. Rejection in final user application is dependent on
PCB layout and external impedance matching design. See Applica-
tion Note No. 42 for details.
4. The design, manufacturing process, and specifications of this filter
are subject to change.
5.
6.
7.
8.
Tape and Reel Standard Per ANSI / EIA 481.
US and international patents may apply.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered
trademarks of RF Monolithics, Inc.
©Copyright 1999, RF Monolithics Inc.
Electrostatic Sensitive Device. Observe precautions for handling.
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
SF2110D-091406 Ver 0.1
Page 1 of 6
305.000 MHz
I. Differential Matching
SAW Filter
SF2110D Demo
PCB=400-1724-001 4 port
J1-J4=500-1279-001 SMACONN
L1-L2=500-1282-470 47nH 0402
L3=500-1282-560 56nH 0402
C1=501-0857-047 4.7pF 0402
C2=501-0857-180 18pF 0402
C3=501-0857-220 22pF 0402
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
SF2110D-091406 Ver 0.1
Page 2 of 6
305.000 MHz
SAW Filter
SM3838-8 Case
8-Terminal Ceramic Surface-Mount Case
3.8 X 3.8 mm Nominal Footprint
Case Dimensions
Dimension
A
B
C
D
E
F
G
H
Min
3.6
3.6
1.05
0.95
0.90
0.50
2.39
1.40
mm
Nom
3.8
3.8
1.20
1.10
1.00
0.60
2.54
1.75
Max
4.0
4.0
1.35
1.25
1.10
0.70
2.69
2.05
Min
0.142
0.142
0.041
0.037
0.035
0.020
0.090
0.055
Inches
Nom
0.150
0.150
0.047
0.043
0.040
0.024
0.100
0.069
Max
0.157
0.157
0.053
0.049
0.043
0.028
0.110
0.080
0.029 TYP.
(O.74)
0.066
(1.68)
0.050 TYP.
(1.27)
Electrical Connections
Connection
Port 1
Differential Input
Port 2
Differential Output
Ground
Single Ended Operation
Differential Operation
Dot Indicates Pin 1
Terminals
1, 2
5, 6
All Others
Return is Ground
Return is Hot
0.002
(0.05)
0.090
(2.29)
0.033
(0.84)
Materials
0.055 TYP.
(1.40)
PCB Footprint
Solder Pad
Termination
Lid
Body
Pb Free
Au plating 30 - 60 uInches (76.2-152 uM) over 80-200
uInches (203-508 uM) Ni.
Fe-Ni-Co Alloy Electroless Nickel Plate (8-11% Phos-
phorus) 100-200 uInches Thick
Al
2
O
3
Ceramic
TOP VIEW
B
8
C
E
BOTTOM VIEW
8
H 7
6
5
608
YWWS
1
A
2
3
7
6
5
1
2
3
G
4
D
4
F
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
SF2110D-091406 Ver 0.1
Page 5 of 6
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