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RF3446E PDF预览

RF3446E

更新时间： 2024-11-21 11:59:07
品牌 Logo 应用领域
RFM LTE
页数 文件大小 规格书
3页 100K
描述
433.92 MHz SAW Filter

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RF3446E 数据手册

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RF3446E  
•
•
•
•
Ideal Front-End Filter for European Wireless Receivers  
Low-Loss, Coupled-Resonator Quartz Design  
Simple External Impedance Matching  
433.92 MHz  
SAW Filter  
Pb  
Complies with Directive 2002/95/EC (RoHS)  
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.  
SM3030-6 Case  
3.0 x 3.0  
Electrical Characteristics  
Characteristic  
Absolute Frequency  
433.90 to 433.94 MHz  
Sym  
Notes  
Minimum  
Typical  
Maximum  
Units  
f
1, 2, 3  
Center Frequency at 25°C  
Passband Ripple  
433.92  
0.5  
MHz  
dB  
c
1.2  
3.0  
IL  
Insertion Loss (433.760 - 434.080)  
1, 3  
1, 3  
2.0  
dB  
MIN  
BW  
kHz  
3 dB Bandwidth  
960  
47  
44  
33  
16  
18  
21  
38  
45  
1080  
50  
1150  
3
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  
47  
36  
19  
1, 3  
dB  
21  
24  
41  
452 - 1000 MHz  
48  
To  
FTC  
|fA|  
3, 4  
Turnover Temperature  
10  
25  
40  
°C  
2
Temperature  
Freq. Temp. Coefficient  
0.032  
ppm/°C  
Frequency Aging  
Absolute Value during the First Year  
Input Z = R llC  
5
1
≤10  
ppm/yr  
Z
Impedance @ fc  
130 Ω || 2.5 pF  
134.5 Ω || 2.48 pF  
IN  
IN IN  
IN  
Output Z  
= R  
llC  
Z
OUT  
OUT OUT  
OUT  
Lid Symbolization (Y=year WW=week S=shift)  
Standard Reel Quantity  
776 // YWWS  
500 Pieces/Reel  
3000 Pieces/Reel  
Reel Size 7 Inch  
Reel Size 13 Inch  
9
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.  
Notes:  
1.  
2.  
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.  
The frequency fc is defined as the midpoint between the 3dB frequencies.  
3.  
4.  
Where noted specifications apply over the entire specified operating temperature range of -40°C to +90°C.  
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.  
7.  
8.  
9.  
The design, manufacturing process, and specifications of this device are subject to change.  
One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.  
All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.  
Tape and Reel Standard Per ANSI / EIA 481.  
www.RFM.com E-mail: info@rfm.com  
©2009 by RF Monolithics, Inc.  
Page 1 of 3  
RF3446E - 2/6/09  
123

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