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©2008 by RF Monolithics, Inc. SF1091A - 6/30/08
Electrical Specification
Characteristic Sym Notes Min Typ Max Units
Nominal Center Frequency fC1 211.000 MHz
Passband Insertion Loss at fc IL 78.0dB
3 dB Passband BW31, 2 ±450 ±500 kHz
Group Delay Variation over fc ±150 kHz GDV 200 250 nsP-P
Rejection fc-2.0 to fc-1.05 and fc+1.05 to fc+2.0 MHz 1, 2, 3 10 21 dB
fc-80 to fc-2.0 and fc+2.0 to fc+80 MHz 30 33
n x fc over 291 to 2000 MHz 40 60
Operating Temperature Range TA1-10 +85 °C
Frequency Temperature Coefficient FTC 10.32 ppm/°C2
Impedance Matching to 50 Ω unbalanced External L-C
Case Style SM13365-12 13.3 x 6.5 mm Nominal Footprint
Lid Symbolization (XX = 2 character date code) RFM SF1091A XX
SM13365-12
• Designed for GSM BTS Transmitter Applications
• Low Insertion Loss
• Excellent Size-to-Performan ce Ratio
• Hermetic 13.3 X 6.5 mm Surface-Mount Case
• Unbalanced Input and Output
• Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating Value Units
Maximum Incident Power in Passband +10 dBm
Max. DC voltage between any 2 terminals 30 VDC
Storage Temperature Range -40 to +85 °C
Suitable for lead-free soldering - Max Soldering Profile 260°C for 30 s
211 MHz
SAW Filter
SF1091A
1. Unless noted otherwise, all specitication apply over the operating temperature range with filter soldered to the specified demonstration board with
impedanced matching to 50 Ω network analyzer.
2. Unless noted otherwise, all frequency specitications 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 oon PCB layout
and external impedance matching design. See Application Note No. 42 for details.
4. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may
be calculated from: f=fo[1-FTC(To-Tc)2].
5. The design, manufacturing process, and specifications of this filter are subject to change.
6. Either Port 1 or Port 2 may be used for either input or output in the design. However, impedances and impedance matching may vary between Port 1
and Port 2, so that the filter must always be installed in one direction per the circuit design.
7. US and international patents may apply.
Pb
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
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©2008 by RF Monolithics, Inc. SF1091A - 6/30/08
CH1 S21 DEL 50 ns/ REF 1 us
Cor
Smo
CH2 S21 LOG 10 dB/ REF -20 dB
CH2 CENTER 211 . 000 000 MHz SPAN 8. 000 000 MHz
Cor
14 Jun 2007 11:15:40
1
2
2 : 51 . 264 ns . 300 000 MHz
REF=1
CH1 Markers
mean : 1. 0319 us
s . dev : 31 . 255 ns
p-p : 141 . 68 ns
1
2
3 4
1 : 0. 0000 dB 0. 000 000 MHz
Max REF=1
CH2 Markers
BW: . 967003 MHz
cent : 210 . 992854 MHz
Q: 218 . 19
1_ loss : -5 . 2050 dB
SF1091A D EMO
THRU CAL
Resp
Resp
1
2
34567
8
9
101112L1
L2
C1
C2
J1
J2
SF1091A DE M O33PF
27PF
100NH
120NH
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©2008 by RF Monolithics, Inc. SF1091A - 6/30/08
SM13365-12 Case
Case Dimensions
Dimension mm Inches
Min Nom Max Min Nom Max
A13.08 13.31 13.60 0.515 0.524 0.535
B6.27 6.50 6.80 0.247 0.256 0.268
C1.91 2.00 0.075 0.079
D1.50 0.059
E0.79 0.031
H1.0 0.039
P2.54 0.100
12-Terminal Ceramic Surface-Mount Case
13.3 x 6.5 mm Nominal Footprint
Materials
Solder Pad
Termination Au plating 30 - 60 uInches (76.2-152 uM) over 80-200
uInches (203-508 uM) Ni.
Lid Fe-Ni-Co Alloy Electroless Nickel Plate (8-11% Phos-
phorus) 100-200 uInches Thick
Body Al2O3 Ceramic
Pb Free
Electrical Connections
Connection Terminals
Port 1 Input or Return 2
Return or Input 3
Port 2 Output or Return 8
Return or Output 9
Ground All others
Single Ended Operation Return is ground
Differential Operation Return is hot
CH
P (8 Places)
E (10 Places)
D
B
A
4
5
6
7
1
12
11
10
3
98
2
TOP VIEW BOTT OM VIEW
23
89
1
12
11
10
4
5
6
7
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©2008 by RF Monolithics, Inc. SF1091A - 6/30/08
COVER TAPE SIZE
KO
COVER TAPE 0.32 mm ±0.3
2.15 mm ±0.2
W
(CARRIER TAPE SIZE)
AO
BO
P
(PITCH)
1.5 mm +0.1
-0.0
4.0 mm ±0.1
2.0 mm ±0.1
1.75 mm ±0.1
7.5 mm ±0.1
1.5 mm +0.3
-0.0
PIN #1
USER DIRECTION OF FEED
COMPONENT ORIENTATION and DIMENSIONS
Carrier Tape Dimensions
Ao 7.0 mm ±0.1
Bo 13.8 mm ±0.1
Ko 2.2 mm ±0.1
Pitch 12.0 mm ±0.1
W24.0 mm ±0.3
11.5 mm ±0.1
