RF1404C 查看數據表（PDF） - Murata Manufacturing
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RF1404C Datasheet PDF : 3 Pages
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• Front-End Filter for European Wireless Receivers
• Low-Loss, Coupled-Resonator Quartz Design
• Simple External Impedance Matching
• Complies with Directive 2002/95/EC (RoHS) Pb
The RF1404C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter
designed to provide front-end selectivity in 433.92 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 wireless remote-control and security devices operating in
Europe under ETSI I-ETS 300 220.
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 advanced SAW design and fabrication technology is utilized to achieve high
performance and very low loss with simple external impedance matching.
RF1404C
433.92 MHz
SAW Filter
SM5050-8 Case
5x5
Characteristic
Center Frequency at 25 °C
Absolute Frequency
Minimum Insertion Loss, 433.800 - 434.120 MHz
Passband (relative to ILmin)
Passband (relative to ILmin)
Attenuation: (relative to ILmin)
433.740 - 434.010 MHz
433.680 - 434.160 MHz
10 - 414 MHz
414 - 427.5 MHz
427.5 - 432.92 MHz
434.92 - 442 MHz
442 - 550 MHz
Impedance at fC:
Turnover To
ZIN = RIN ||CIN
ZOUT = ROUT || COUT
550 - 1000 MHz
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
ILmin
BW3
Notes
1, 2
1
1
1
1
1
1
3, 4
3, 4
Minimum Typical Maximum
433.920
2.4
4.0
3.0
6.0
650
700
45
48
40
43
15
19
10
14
35
38
45
50
227Ω || 3.3 pF
227Ω || 3.3 pF
25
≤10 ppm/yr Typical
499
500 Pieces/Reel
3000 Pieces/Reel
Units
MHz
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 bandwidth and passband
shape are dependent on the impedance matching component values and quality.
2. The frequency fc is defined as the midpoint between the 3 dB 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.
©C2o0p1y0r-i2g0h1t5©byMMuuraattaaEMleactnrounfiaccstNu.rAin.,gInCc.o., Ltd. All Rights Reserved 2003
RF1404C (R) 4/6/15
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