SF2138B
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Designed for SDARS IF Receiver
Low Insertion Loss
5.0 X 7.0 mm Surface-Mount Case
Differential or Single Ended Input and Output
Complies with Directive 2002/95/EC (RoHS)
Pb
144.132 MHz
SAW Filter
Value
+10
30
-40 to +85
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Maximum DC Voltage Between any Two Terminals
Storage Temperature Range in Tape an Reel
Maximum Soldering Profile
Units
dBm
VDC
°C
265 °C for 10 s
SMP-03
Electrical Characteristics
Characteristic
Nominal Center Frequency
Passband Width at +25 °C
1 dB Bandwidth
15 dB Bandwidth
30 dB Bandwidth
Passband Minimum Insertion Loss, Including Matching Network
Terminating Source Impedance
Terminating Load Impedance
Amplitude Ripple:
TDM1, 137.882 to 142.382 MHz
COFDM, 141.882 to 146.182 MHz
TDM2, 145.882 to 150.382 MHz
Attenuation Relative to Insertion Loss at Center Frequency
122.882 to 127.882 MHz
127.882 to 132.882 MHz
154.137 to 159.137 MHz
159.137 to 162.882 MHz
162.882 to 177.882 MHz
Group Delay Ripple
TDM1, 137.882 to 142.382 MHz
COFDM, 141.882 to 146.182 MHz
TDM2, 145.882 to 150.382 MHz
Operating Temperature Range
Case Style
Lid Symbolization (YY=year, WW=week, S=shift) See note 4
Sym
f
C
BW
1
BW
15
BW
30
IL
MIN
Notes
1
Min
137.882
12.5
Typ
144.132
Max
150.382
Units
MHz
dB
MHz
MHz
MHz
dB
1
13.3
15.9
16.2
16.9
18.2
13.7
15.5
ZS = 200 ohms differential
ZL = 1.5K ohms differential
1
0.5
1
1.7
1.5
1.7
dB
P-P
1, 3
45
43
38
43
48
50
47
42
47
53
30
25
30
dBc
T
A
1
6
100
ns
P-P
100
100
-40
+85
°C
SMP-03 7 x 5 mm Nominal Footprint
RFM SF2138B YYWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
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.
Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
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.
"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.
Tape and Reel Standard ANSI / EIA 481.
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.
US and international patents may apply.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc.
www.RFM.com E-mail: info@rfm.com
©2009 by RF Monolithics, Inc.
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SF2138B - 7/9/09
RFM [ RF MONOLITHICS, INC ]
