Preliminary
SF2148B
•
•
•
•
Designed for TD-SCDMA Applications
Low Insertion Loss
5.0 X 7.0 mm Surface-Mount Case
Complies with Directive 2002/95/EC (RoHS)
Pb
Value
+10
30
-40 to +85
138.24 MHz
SAW Filter
Units
dBm
VDC
°C
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Maximum DC Voltage Between any Two Terminals
Storage Temperature Range in Tape and Reel
Maximum Soldering Profile
265 °C for 10 s
SMP-03-S
Electrical Characteristics
Characteristic
Nominal Center Frequency
Insertion Loss at f
C
1 dB Passband, 128.24 to 148.24 MHz
Amplitude Ripple over 20 MHz Passband
Group Delay Ripple over 20 MHz Passband
Rejection:
0 to 108.24 MHz
108.24 to 117.52 MHz
122.88 MHz
220.4 to 271.12 MHz
271.12 to 1000 MHz
1 dB Compression
Input IP3
Operating Temperature Range
Input/Output Impedance
Case Style
Lid Symbolization (YY=year, WW=week, S=shift) See note 4
Sym
f
C
IL
BW
1
GD
P-P
Notes
1
Min
Typ
138.24
Max
10.5
Units
MHz
dB
MHz
dB
P-P
ns
P-P
20
1, 2
1
50
T
A
54
50
1, 2, 3
dBc
45
50
40
12
dBm
35
dBm
1
-40
+85
°C
200 ohms balanced or 50 ohms unbalanced
SMP-03-S 7 x 5 mm Nominal Footprint
6
RFM SF2148B YYWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
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.
The design, manufacturing process, and specifications of this filter are subject to change.
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.
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 1 of 5
SF2148B - 7/9/09
RFM [ RF MONOLITHICS, INC ]
