SF1125A 380 MHz SAW Filter
Absolute Maximum Ratings
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
RF Monolithics, Inc.
4347 Sigma Road
Dallas, Texas 75244
USA
Characteristic
Nominal Center Frequency
Passband
Rejection
Part to Part Average Group Delay Variation
Operating Temperature Range
Frequency Temperature Coefficient
Matching to 50
Case Style
Lid Symbolization (YY = year, WW = week) See note 4
Rating
Maximum Incident Power in Passband
Max. DC voltage between any 2 terminals
Storage Temperature Range
Max Soldering Profile
Designed for WCDMA 3G IF Applications
Excellent Size-to-Performance Ratio
Hermetic 13.3 x 6.5 mm Surface-Mount Case
Associated Plots Attached
All specifications apply filter soldered to the RFM specified demonstration board with impedance matching to 50
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.
Part to part absolute delay measurement records the absolute delay mean across 1dB passband.
“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.
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.
Electrostatic Sensitive Device. Observe precautions for handling.
Copyright 1999, RF Monolithics Inc.
fc-4.125 to fc-3.95 and fc+3.95 to fc+4.125 MHz
fc-3.95 to fc-3.3 and fc+3.3 to fc+3.95 MHz
Balanced or Single Ended Impedance
Group Delay Variation over fc 2.25 MHz
Amplitude Ripple over fc 2.25 MHz
Phase Variation over fc 2.25 MHz
fc±4.125 to fc±60 MHz
Insertion Loss at fc
1 dB Passband
3 dB Passband
Home page:
Phone: +1(972)233-2903
e-mail:
Fax: +1(972)387-8148
-40 to +85
Value
265 C for 10 s
+10
30
info@rfm.com
www.rfm.com
GDV
Sym
BW
BW
FTC
T
Units
fc
IL
dBm
VDC
A
C
1
3
SMP-53 13.3 x 6.5 mm Nominal Footprint
4.45
TBD
TBD
Min
5.1
-10
10
30
40
Electrical Connections
RFM SF1125A YYWW
Port 1 Gnd Return
Port 2 Gnd Return
380.000
16.5
0.75
Typ
150
+25
5.0
5.4
7.5
-18
External L-C
Case Ground
Connection
Port 1 Hot
Port 2 Hot
TBD
Max
1.25
+85
and measured with 50
175
18
±5
European Sales Office
SF1125A.DOC 1/29/2001 D
Terminals
11
12
5
6
All others
ppm/ C
Units
dB
ns
nsec
MHz
MHz
dB
dB
44 1963 251383
44 1963 251510
P-P
C
P-P
P-P
Notes
1, 2, 3
1, 2
1
4
1