Preliminary
SF2147D
• CDMA Base Station SAW Filter
• 3.8 x 3.8 x 1.4 mm Surface-mount Package
• Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Maximum DC Voltage on any Non-ground Terminals
Operating Temperature Range
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
Pb
Value
+10
3
-40 to +85
-40 to +85
260°C for 30 s
157.0 MHz
SAW Filter
Units
dBm
VDC
°C
°C
SM3838-6
Electrical Characteristics
Characteristic
Center Frequency
Passband Width
Matched Insertion Loss, 147 to 167 MHz
Passband Amplitude Ripple, 147 to 167 MHz
Passband Group Delay, 147 to 167 MHz
Passband Group Delay Ripple, 147 to 167 MHz
Rejection:
f
C
± (16 to 20 MHz)
f
C
± (20 to 100 MHz)
DC to 57 MHz
257 to 1000 MHz
Single-ended Source Impedance
Single-ended Load Impedance
Case Style
Lid Symbolization (Y=year, WW=week, S=shift) dot=pin 1 indicator
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
50 ohm
50 ohm
SM3838-6 3.8 x 3.8 mm Nominal Footprint
796, YWWS
500 Pieces/Reel
3000 Pieces/Reel
1, 2, 3
8
15
35
11
29
45
dB
15
Sym
f
C
BW
IL
Notes
1
Min
20
Typ
157
7.8
1.2
Max
Units
MHz
8.5
1.8
0.2
50
dB
dB
P-P
µs
ns
P-P
Electrical Connections
Connection
Port 1
Port 2
Case Ground
Terminals
2
5
All others
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
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 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.
"LRIP" or "L" after the part number indicates "low rate initial production"
5.
6.
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.
7.
8.
4.
www.RFM.com E-mail: info@rfm.com
©2010 by RF Monolithics, Inc.
Page 1 of 5
SF2147D - 6/25/10
RFM [ RF MONOLITHICS, INC ]
