Preliminary
SF2149A
• TD-SCDMA SAW Filter, 46.08 MHz, 5 MHz BW
• Low Insertion Loss
• 13.3 x 6.5 x 1.9 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS)
46.08 MHz
SAW Filter
Pb
Absolute Maximum Ratings
Rating
Value
Units
Maximum Incident Power in Passband
+10
dBm
Max. DC voltage between any 2 terminals
Storage Temperature Range
30
VDC
°C
-40 to +85
Suitable for lead-free soldering - Max. Soldering Profile
260°C for 10 s
SM13365-12
Electrical Characteristics
Characteristic
Sym
Notes
Min
Typ
46.08
Max
Units
fN
BW
IL
1
Nominal Center Frequency
MHz
MHz
Passband bandwidth
5
Insertion Loss
43.58 ... 48.58 MHz
30 ... 41.98 MHz
8
25
10
Relative Attenuation to IL @
out of pass band (Rejection)
20
40
15
40
61.44 MHz
50.18 ... 76.8 MHz
<30 MHz &>76.8 MHz
43.58 ... 48.58 MHz
43.58 ... 48.58 MHz
43.58 ... 48.58 MHz
43.58 ... 48.58 MHz
1, 2,3
45
dB
25
45
0.6
0.8
100
15
Amplitude ripple (p-p)
Amplitude ripple (p-p) @ 25°C
Group delay ripple (p-p)
1 dB compression Point
Input IP3
1.0
dB
dB
120
ns
12
35
dBm
dBm
°C
40
Operating Temperature
Terminating impedance
+85
-40
50
Ohm
Case Style
SM13365-12 13.3 x 6.5 mm Nominal Footprint
RFM SF2149A // YYWWS
Lid Symbolization (YY = year, WW = week, S=shift) See note 4
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
Unless noted otherwise, all specifications apply over the operating tem-
perature range with filter soldered to the specified demonstration board
with impedance matching to 50 Ω and measured with 50 Ω network ana-
lyzer.
mean across 1 dB passband.
5.
6.
7.
"LRIP" or "L" after the part number indicates "low rate initial production"
and "ENG" or "E" indicates "engineering prototypes.”
The design, manufacturing process, and specifications of this filter are
subject to change.
2.
3.
Unless noted otherwise, all frequency specifications are referenced to the
nominal center frequency, fc.
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.
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 Application Note No. 42
for details.
8.
US and international patents may apply.
4.
Part to part absolute delay measurement records the absolute delay
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©2008 by RF Monolithics, Inc.
SF2149A - 1/11/11
RFM [ RF MONOLITHICS, INC ]
