SF2182D
• 22 MHz Filter Bandwidth
• 3.8 x 3.8 x 1.4 mm Surface-mount Package
• Complies with Directive 2002/95/EC (RoHS)
Pb
140 MHz
SAW Filter
Value
+10
3
-40 to +85
260°C for 30 s
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Maximum DC Voltage on any Non-ground Terminal
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
Units
dBm
VDC
°C
SM3838-8
Electrical Characteristics
Characteristic
Nominal Center Frequency
Insertion Loss
Insertion Loss Variation over Temperature
3 dB Bandwidth
Passband Amplitude Ripple, Single-ended Matching, 120 to 160 MHz
Passband Amplitude Ripple, Balanced Matching, 120 to 160 MHz
Absolute Attenuation (referenced to IL
MAX
)
10 to 70 MHz
70 to 115 MHz
166.5 to 200 MHz
200 to 400 MHz
Absolute Group Delay in Passband
Passband Group Delay Ripple, Matching Network A or B, 129 to 151 MHz
Input Impedance, Unbalanced Matching Network
Input Impedance, Balanced Matching Network
Input Return Loss through any Matching Network
Output Impedance, Unbalanced Matching Network
Output Impedance, Balanced Matching Network
Output Return Loss through any Matching Network
Operating Temperature Range
Case Style
Lid Symbolization (Y=year, WW=week, S=shift)
Sym
F
C
IL
MAX
Notes
1
1
1
1
1
1
3
3
3
3
1
1
1
1
1
1
1
1
Min
Typ
140
13.5
Max
15.0
1
1.5
2.0
Units
MHz
dB
dB
MHz
dB
P-P
dB
P-P
40
43
0.8
1.2
50
40
40
50
400
20
50
200
8
50
200
10
45
25
25
45
dB
450
50
3
3
-40
+85
SM3838-8 3.8 x 3.8 mm Nominal Footprint
RFM 873 YWWS
ns
ns
P-P
ohm
ohm
dB
ohm
ohm
dB
°C
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
Unless noted otherwise, all specifications apply over the operating temper-
ature 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 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."
5.
6.
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.
7.
8.
www.RFM.com E-mail: info@rfm.com
©2010 by RF Monolithics, Inc.
Page 1 of 14
SF2182D - 5/28/10
RFM [ RF MONOLITHICS, INC ]
