Preliminary
SF2221A
•
•
•
•
•
Precision IF SAW Filter
Excellent Size-to-Performance Ratio
Hermetic Surface-mount Case
Single-ended Input and Output
Complies with Directive 2002/95/EC (RoHS)
Pb
Value
+18
30
-40 to +85
260°C for 30 s
193.60 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
Suitable for Lead-free Soldering - Maximum Soldering Profile
SM1154-14
Electrical Specifications
Characteristic
Nominal Center Frequency
Passband:
Minimum Insertion Loss, 192.9 to 194.3 MHz
1 dB Bandwidth
3 dB Bandwidth
3 dB Passband VSWR, Matched
Group Delay Variation, 192.9 to 194.3 MHz
Absolute Delay at 193.6 MHz
Rejection:
191.8 and 195.4 MHz
Ultimate Rejection, <182.6 MHz, >204.6 MHz
Operating Temperature Range
Impedance Matching to 50
Ω
Single-ended Source and Load
Case Style
Lid Symbolization (YY = year, WW = week)
T
A
1
GDV
AGD
1, 2, 3
25
45
0
External L-C
SM1154-14, 11.5 x 4 mm Nominal Footprint
SF2221A, YYWW
30
50
+70
°C
dB
800
BW
1
BW
3
1, 2
1.0
1.4
Sym
f
C
Notes
1
Min
Typ
193.60
8.0
1.27
1.82
2.2:1
300
900
Max
Units
MHz
9.0
dB
MHz
MHz
3:1
500
1000
ns
P-P
ns
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
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.
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
].
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
©2010 by RF Monolithics, Inc.
Page 1 of 4
SF2221A - 11/12/10
RFM [ RF MONOLITHICS, INC ]
