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PDF RF3446E Data sheet ( Hoja de datos )
| Número de pieza | RF3446E | |
| Descripción | SAW Filter | |
| Fabricantes | RF Monolithics | |
| Logotipo |  |
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• Ideal 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 RF3446E is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide 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 wire-
less remote-control and security devices operating in Europe under ETSI I-ETS 300 220.
RF3446E
433.92 MHz
SAW Filter
Electrical Characteristics
Characteristic
Center Frequency at 25°C Absolute Frequency
Passband Ripple
433.90 to 433.94 MHz
Insertion Loss (433.760 - 434.080)
3 dB Bandwidth
Rejection Attenuation: (relative to ILmin)
10 - 418 MHz
418 - 423.7 MHz
423.7 - 430 MHz
430 - 432.5 MHz
436 - 438.5 MHz
438.5 - 446 MHz
446 - 452 MHz
452 - 1000 MHz
Turnover Temperature
Temperature
Freq. Temp. Coefficient
Frequency Aging
Absolute Value during the First Year
Impedance @ fc
Input ZIN = RINllCIN
Output ZOUT = ROUTllCOUT
Lid Symbolization (Y=year WW=week S=shift)
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
Sym
fc
ILMIN
BW3
Notes
1, 2, 3
1, 3
1, 3
www.DataSheet.net/
1, 3
To
FTC
|fA|
ZIN
ZOUT
3, 4
5
1
9
SM3030-6 Case
3.0 x 3.0
Minimum
Typical Maximum
433.92
0.5
2.0
1.2
3.0
960
1080
1150
47 50
44 47
33 36
16 19
18 21
21 24
38 41
45 48
10 25 40
0.032
≤10
130 Ω || 2.5 pF
134.5 Ω || 2.48 pF
776 // YWWS
500 Pieces/Reel
3000 Pieces/Reel
Units
MHz
dB
dB
kHz
dB
°C
ppm/°C2
ppm/yr
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 3dB frequencies.
3. Where noted specifications apply over the entire specified operating temperature range of -40°C to +90°C.
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.
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.
9. Tape and Reel Standard Per ANSI / EIA 481.
www.RFM.com E-mail: [email protected]
©2009 by RF Monolithics, Inc.
Page 1 of 3
RF3446E - 2/6/09
Datasheet pdf - http://www.DataSheet4U.co.kr/
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