SF2157A
• • • • Designed for WiMax Applications Low Insertion Loss IF Filter Hermetic 13.3 x 6.5 mm Surface-mount Case Complies with Directive 2002/95/EC (RoHS)
Pb
Value
+10 30 -50 to +125
156 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 Suitable for Lead-free Soldering - Maximum Soldering Profile
260 °C for 30 s
SM13365-12 Electrical Characteristics Characteristic
Center Frequency 1 dB Bandwidth 3 dB Bandwidth 40 dB Bandwidth Insertion Loss Attenuation Relative to IL 0 to123 MHz 190 to 1000 MHz Passband Ripple, 146 to 166 MHz Absolute Group Delay, 156 MHz Group Delay Ripple, 146 to 166 MHz Operating Temperature Range Source Impedance VSWR to Source through Matching Network Load Impedance VSWR to Load through Matching Network Frequency Temperature Coefficient Impedance Matching to 50 Ω Unbalanced Case Style Lid Symbolization (YY = year, WW = week) 1 -40 50 1.4:1 50 1.4:1 -94 External L-C SM13365-12 13.3 x 6.5 mm Nominal Footprint RFM SF2157A YYWW 2:1 ppm/K 2:1 ohm
www.DataSheet.net/
Sym
fC BW1 BW3 BW40 IL
Notes
1 1 1 1 1 1, 2, 3
Min
20.0 21.0
Typ
156 22.0 24.0 27 10.0
Max
Units
MHz MHz MHz
30 12.0
MHz dB dB
45 45
50 50 1.0 1.8 1.50 100 +85
dBP-P µs nsP-P °C ohm
1, 2, 3
1.13 30
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes:
1. 2. 3. 4. 5. 6. 7. 8. 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. Part to part absolute delay measurement records the absolute delay mean across 1 dB 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.
www.RFM.com E-mail:
[email protected] ©2009 by RF Monolithics, Inc.
Page 1 of 5 SF2157A - 7/10/09
Datasheet pdf - http://www.DataSheet4U.co.kr/
S11, S22 and S21 Filter Plots
10 Jul 2009 10:39:53
CH1 S 11 1 U FS 3 . 128 9 1 : 43 . 27 5 1 56 . 0 00 00 0 MHz sf21 57 A 1 d B BW 3 . 19 22 nH CH3 S2 2 1 : 4 4 . 238 1 56 . 00 0 0 00 1 U FS 1 0 . 535 M Hz 10 . 74 8 nH
1 1
Cor Full
Co r
CENTR CH2
15 6 . 000 S2 1
MHz
SPA N 10 dB/
2 00
. 00 0
MHz
CE NTR
156
. 0 00
MHz dB
S PAN 0 . 00 0
2 00 . 000 000 MHz
MHz
LO G
RE F -1 0.4 8 d B
1 : 0 . 0 000
1 CH2 Ma x B W: ce nt : Ma rke rs REF=1 MHz MHz
3 Cor Full
2
4
22 . 54 85 81 156 . 0 12 593
Q : 6 . 91 90 1_ loss : -9 . 979 2 dB
www.DataSheet.net/
S TA RT
56 . 0 00
00 0
MHz
S TO P
2 56 . 00 0
0 00
MHz
www.RFM.com E-mail:
[email protected] ©2009 by RF Monolithics, Inc.
Page 2 of 5 SF2157A - 7/10/09
Datasheet pdf - http://www.DataSheet4U.co.kr/
Filter Passband VSWR
10 Jul 20 09 10:38:25
CH1 S1 1 SW R 1 / REF -1 4 : 2 . 653 0 17 6 . 000 000 MHz
SF2 157A VSWR CH1 Markers
C
1 : 1 . 1732 156 . 0 00 MHz 2 : 1 . 2604 166 4 3 : 1 . 2529 146 . 0 00 MHz . 0 00 MHz
Full
3
1
2
CH3
S2 2
SW R
1 /
REF -2
4 : 2 . 803 5
17 6 . 000
000
MHz
CH3
Markers
C 4
1 : 1 . 2930 156 . 0 00 MHz 2 : 1 . 0149 166 . 0 00 MHz
3 : 1 . 4610 146 . 0 00 MHz 3 1
www.DataSheet.net/
2
CENTER
156
. 0 00
000
MHz
SPA N
4 0 . 000
0 00
MHz
www.RFM.com E-mail:
[email protected] ©2009 by RF Monolithics, Inc.
Page 3 of 5 SF2157A - 7/10/09
Datasheet pdf - http://www.DataSheet4U.co.kr/
Filter Amplitude and Group Delay Ripple
10 Jul 2009 10:45:36
CH1 S2 1 LOG 1 d B/ REF -1 0.4 2 d B 3 : . 326 40 dB -20 . 00 0 0 00 M Hz
SF2 157A ripple CH1 me an C 3 s . de v p-p 1 2 : . 19 270 : . 7 17 70 dB dB : -1 0 Marke rs REF=2 . 3 53 dB
Full
CH3
S2 1
DEL
1 00 ns/
REF 1.1 84 us
3 : -12
. 97 0
ns
-20
. 00 0
0 00
M Hz
CH3 Sm o C 3 mea n s . de v p-p 1 2
Marke rs REF=2 us ns ns
: 1 . 2027 : 4 . 4047 : 26 . 24 5
www.DataSheet.net/
CENTER
1 56
. 00 0
000
M Hz
SP AN
40 . 00 0
000
M Hz
S F 2 1 5 7 A D e m o n s tr a tio n C ir c u it
L 1 5 0 o h m s C 1 2 7 p F 3 4 5 6 n H 1 1 1 1 2 2 1 0 9
S F 2 1 5 7 A
5 8 6 7
L 2 5 6 n H 5 0 o h m s C 2 2 7 p F C 3 2 .0 p F
www.RFM.com E-mail:
[email protected] ©2009 by RF Monolithics, Inc.
Page 4 of 5 SF2157A - 7/10/09
Datasheet pdf - http://www.DataSheet4U.co.kr/
SM13365-12 Case
12.