SF2222C Datasheet, PDF (1/4 Pages) RF Monolithics, Inc – 228.0 MHz SAW Filter

Preliminary
• Low Insertion Loss
• Excellent Size-to-Performance Ratio
• Hermetic SM5050-8 Surface-mount Case
• Single-ended Input and Output
• Complies with Directive 2002/95/EC (RoHS)
Pb
Absolute Maximum Ratings
Rating
Maximum Power Handling
Maximum DC Voltage on any Non-ground Terminal
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
Value
Units
1
W
3
VDC
-40 to +85
°C
260°C for 30 s
SF2222C
228.0 MHz
SAW Filter
SM5050-8
Electrical Specifications
Characteristic
Center Frequency
Insertion Loss, 224.9 to 231.1 MHz
Amplitude Ripple, 224.9 to 231.1 MHz
Rejection:
1.0 to 150.0 MHz
150.0 to 195.0 MHz
195.0 to 210.0 MHz
250.0 to 275.0 MHz
275.0 to 320.0 MHz
320.0 to 1000.0 MHz
1000.0 to 3000.0 MHz
Source Impedance, Single-ended
Load Impedance, Single-ended
Operating Temperature Range
Case Style
Lid Symbolization (YY = year, WW = week)
Sym Notes
Min
f_C
50
40
30
35
35
TBD
TBD
T_A
-40
Typ
228.0
50
50
Max
3.0
1.2
+85
SM5050-8, 5 x 5 mm Nominal Footprint
958, YYWW
Units
MHz
dB
dB_P-P
dB


°C
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified demonstration board with
impedance matching to 50  and measured with 50 network analyzer.
2. Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
3. 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.
4. The turnover temperature, T_O, is the temperature of maximum (or turnover) frequency, f_o. The nominal frequency at any case temperature, T_c, may
be calculated from: f=f_o[1-FTC(T_o-T_c)²].
5. The design, manufacturing process, and specifications of this filter are subject to change.
6. 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.
7. US and international patents may apply.
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©2010 by RF Monolithics, Inc.
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SF2222C - 6/15/10