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PDF RF3355C Data sheet ( Hoja de datos )
| Número de pieza | RF3355C | |
| Descripción | SAW Filter | |
| Fabricantes | RF Monolithics | |
| Logotipo |  |
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Preliminary
® RF3355C
• Ideal Front-End Filter for Wireless Receivers
• Low-Loss, Coupled-Resonator Quartz Design
• Simple External Impedance Matching
• Complies with Directive 2002/95/EC (RoHS) Pb
The RF3355C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide front-end selectivity in 390 MHz receivers. Receiver designs using this filter include superhet with
10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are wire-
less remote-control and security devices.
390.0 MHz
SAW Filter
This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater
than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s ad-
vanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with
simple external impedance matching.
Electrical Characteristics
Characteristic
Center Frequency at 25°C
Absolute Frequency
Tolerance from 390.0 MHz
Minimum Insertion Loss 389.82 -390.22 MHz
Passband (relative to ILmin)
389.77 -390.2
389.71 -390.26
Passband (relative to ILmin)
Attenuation: (relative to ILmin)
0 - 345 MHz
345 - 370 MHz
370 - 388.94 MHz
391.5 - 410 MHz
410 - 475 MHz
475 - 1000 MHz
Impedance at FC ; Input ZIN=RIN//CIN
Output ZOUT=ROUT//COUT
Turnover To
Frequency Aging Absolute Value During the First Year
Lid Symbolization (in addition to Lot and/or Date Codes)
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
Sym
fC
∆fC
ILmin
BW3
Notes
1, 2
1, 2
1
1
1
www.DataSheet.net/
1
1
1
3, 4
3, 4
SM5050-8 Case
5x5
Minimum
Typical Maximum
390.0
2.0
1.5
2.0
500 1100
45 50
40 45
15 25
8 13
35 45
45 55
344Ω // 4.9pF
344Ω // 4.9pF
25
≤10 ppm/yr Typical
736 // YWWS
500 Pieces/Reel
3000 Pieces/Reel
±100
4.0
3.0
6.0
Units
MHz
kHz
dB
dB
kHz
dB
°C
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 Ω test system with
VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss and band-
width and passband shape are dependent on the impedance matching component values and quality.
2. The frequency fc is defined as the midpoint between the 3dB frequencies.
3. Where noted specifications apply over the entire specified operating temperature range.
4. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may
be calculated from: f = fo [1 - FTC (To - Tc)2].
5. Frequency aging is the change in fc with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures
above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
6. The design, manufacturing process, and specifications of this device are subject to change without notice.
7. One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.
8. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.
RF Monolithics, Inc. Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [email protected]
http://www.rfm.com
RF3355C-071907
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