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RF1411D
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Ideal Front-End Filter for European Wireless Receivers
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?
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Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Complies with Directive 2002/95/EC (RoHS)
Pb
869.2625 MHz
SAW Filter
The RF1411D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide
front-end selectivity in 869.2625 MHz receivers. Receiver designs using this filter include superhet 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, in Germany under FTZ 17 TR 2100, in the United
Kingdom under DTI MPT 1340 (for automotive only), in France under PTT Specifications ST/PAA/TPA/AGH/
1542, and in Scandinavia.
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 (not included).
SM3838-8 Case
3.8 x 3.8
Electrical Characteristics
Characteristic
Center Frequency @ 25°C
Sym
f C
Notes
1, 2, 3
Minimum
Typical
869.2625
Maximum
Units
MHz
I.L.
PassBand (relative to IL min )
868.9125 -869.6125
1, 3
3.3
0.4
4.5
1.0
dB
dB
Pass Bandwidth (relative to IL min )
Rejection (relative to IL min )
10-700 MHz
700-842 MHz
842-864 MHz
BW 3
1, 3
50
35
25
1250
55
40
28
kHz
Temperature Coeff
Operating Temperature Range
864-866 MHz
872-879 MHz
879-909 MHz
909-1000 MHz
1, 3
15
8
15
40
-45
24
13
20
45
0.032
+85
dB
ppm/
°C 2
°C
Impedance @ fc
Input Z IN = R IN ll C IN
Output Z OUT = R OUT ll C OUT
Z IN
Z OUT
1
1
117 ? ll 3.7pf
117 ? ll 3.7pf
Lid Symbolization (in addition to Lot and/or Date Codes)
512 // YWWS
Standard Reel Quantity
7 Inch Reel
13 Inch Reel
8
500 Pieces/Reel
3000 Pieces/Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 ? test system with
VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f c . Note that insertion loss and band-
width are dependent on the impedance matching component values and quality.
The frequency f c is defined as the midpoint between the 3dB frequencies.
Where noted, specifications apply over the entire specified operating temperature range of -45°C to +85°C.
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.
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
?2008 by RF Monolithics, Inc.
Page 1 of 3
RF1411D - 3/21/08
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