Integrated Circuit Systems, Inc. Product Family Brief STANDARD SAW FILTERS (70MHz, 140MHz) GENERAL DESCRIPTION This family of SAW (surface acoustic wave) filters is available in standard center frequencies of 7OMHz and 140MHz. Bandwidths range from 0.25MHz to very wide bandwidths (up to 56MHz). These filters are ideal for general radio applications where the common IF is 7OMHz or 140MHz and high rejection is needed. APPLICATIONS Military radios * Telemetry systems * Communication and navigation * Test equipment Repeaters BLOocK DIAGRAM Generic Radio Application FEATURES * SAW 3dB bandwidths from 0.25MHz to 56MHz * Insertion loss ranging from 20dB to 28dB * High rejection to remove spurious signals Low amplitude ripple and group delay variation Steep skirts optimized for high close-in rejection * Packages inc.: DIP-BT (27 x 12.6mm), and DIP-O (22 x 13mm) TYPICAL RESPONSE SF140CF51907T Type performance | | 1 i ! YL | 1 i Pod ea fie ee Ld 34.598 \ | | fi ' iD \ 1 ' I ' | ! ' \ \ I ' QA BSR be ool pee be de le ee beige Sh Sis Se ele 2 1 F pmo |, _ ery Q ee ee ee DD | ro} ' 1 1 \ | 3 \ \ of ok | ul \ \ \ . 64.538- --+-- oer oe ete Py f | ! ! | 1 = \ Ny 1 \ | TASS Sy SS SS SSP SSS PSS Ese Sees SS =F | \ \ { \ il 1 \ h \ B4538- As aN WY OTR nit th \ fy 1 f i a | I ase ; see Poe t HI 4\- \ tH i \ | ft \ \ 104.538 \ 1 i 1 i Ll Ll \ 133.6 135.2 136.8 138.4 140 1416 1432 1448 146.4 F requency(MHz) Antenna AF PA 70 or 140MHz SAW Filter ee Voice, Data, Video, etc. JF Synthesizer 70 or 140MHz SAW Filter Demodulator Voice, Data, LNA = Amp Amp Video, etc. Mixer Mixer MNC SF-CF Rev 1.0 Page 12 Revision 112102 Integrated Circuit Systems, Inc. e Communications Modules e www.icst.com/comm-modules e te! (508) 852-5400 Integrated Product Family Brief Circuit Systems, Inc. STANDARD SAW FILTERS (70MHz, 140MHZ) CONTINUED STANDARD SAW FILTERS (70MHz, 140MHz) Frequency 3dB Bandwidth Insertion Part Number Package (mm) (MHz) (MHz) Loss (dB) | 70MHz Standard SAW Filters SFOO7OCF51541T 70 0.25 | 20 _ DIP-BT 27x12.6 mm SFOO70CF51542T =-ss 70 05 24 DIP-O, 22x13mm SFOO70CF51543T 70 07 ; 23 DIP-BT 27x12.6 mm -SFO070CF51544T 70 | 1 DIP-BT 27x12.6 mm SFOO70CF51546T === 70 2 26 DIP-O, 22x13 mm SFOO70CF51547T 70 BS 27 DIP-O, 22x13 mm SFOO70CF51548T = ==70 a 3 a _DIP-O, 22x13 mm SFOO70CF51549T 70tizC KH 27 ~~ DIP-O, 22x13 mm SFOO70CF51550T ~~ 70, 40 25 DIP-O, 22x13 mm SFO070CF51551T 70 45 26 DIP-O, 22x13 mm SFO0070CF51553T 70 5.5 | 25 DIP-O, 22x13 mm SFOO70CF51554T 70 6 2 __DIP-O, 22x13 mm SFO070CF51557T 70 8 24 sO IP-O,, 22x13 mm SFOO70CF51475T 70 1000 26 ~COD*IP-O,, 22x13 mm SFOO70CF51842T 70 120 25. CODIP-O, 22x13 mm SFOO70CF51846T 70 16 26 DIP-O, 22x13 mm SFOO70CF51848T 7O 20 27, s IP-O, 22x13 mm SF0070CI 70 =t<<is~iSWN 225 __COD'IP-O,, 22x13 mm SFO070CF51854T 70 82 83.5 SsWIP-O,, 22x13 mm SFOO70CF51855T 70 = 34 i 25 - DIP-O, 22x13 mm _ SFOO70CF51856T 70 36 5 _ DIP-O, 22x13 mm 140MHz Standard SAW Filters SF0140CF51902T 140 23 DIP-BT 27x12.61 SFO140GFS1900T 440 25 sOWIP- BT 27x13 SF0140CF51905T 140 26 ___DIP-O, 22x13 mm SF0140CF51907T 4400 3 27.5 ~DIP-O, 22x19mm _ SFO140CF51913T ~=140 6 28 | DIP-O, 22x13mm SFO140CF51915T 140 a 7 27. _sOD:IP-O,, 22x13 mm SFO140CF51917T =: 140_S 3B 955 DIP-O, 22x13mm SFO140CF51919T = ~=140~ 9 23.5 DIP-O, 22x13 mm SF0140CF51921T 140 ~10- : 24 DIP-O, 22x13 mm SFO140CF51925T 140 14 DA DIP-O, 22x13 mm _ SFO140CF51927T 140 7 416 25 _sCODIP-O, 22x13 mm SFO140CF51933T 14400 824 | 26.5 DIP-O, 22x13 mm SFO140CF51935T 140 280 26.5 DIP-O, 22x13 mm SFO140CF51943T 140 44 95 DIP-O, 22x13 mm MNC SF-CF Rev 1.0-pg2 Page 13 Revision 112102 Integrated Circuit Systems, Inc. e Communications Modules e www.icst.com/comm-modules e tel (508) 852-5400