RF3404E
•
•
•
•
•
Ideal Front-End Filter for European Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
RoHS Compliant
Complies with Directive 2002/95/EC (RoHS)
Pb
433.92 MHz
SAW Filter
The RF3404E 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.
SM3030-6 Case
3.0 x 3.0
Electrical Characteristics
Characteristic
Center Frequency at 25°C
Absolute Frequency
Tolerance from
Insertion Loss (433.760 - 434.080)
3 dB Bandwidth
Rejection Attenuation: (relative to ILmin)
10 - 414 MHz
414 - 424 MHz
424 - 430 MHz
430 - 432 MHz
436 - 437 MHz
437 - 440 MHz
441 - 445 MHz
445 - 1000 MHz
Turnover Temperature
Temperature
Frequency Aging
Impedance @ fc
Freq. Temp. Coefficient
Absolute Value during the First Year
Input Z
IN
= R
IN
llC
IN
Output Z
OUT
= R
OUT
llC
OUT
Lid Symbolization (Y=year WW=week S=shift)
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
9
To
FTC
|fA|
Z
IN
Z
OUT
5
1
3, 4
1, 3
MHz
Sym
f
c
∆f
c
IL
MIN
BW
3
Notes
1, 2, 3
1, 2
1, 3
1, 3
Minimum
Typical
433.92
±100
2.3
Maximum
Units
MHz
kHz
3.5
750
dB
kHz
600
30
27
16
8
19
25
15
30
10
650
40
35
20
10
25
32
20
46
25
0.032
≤10
150Ω // 3.4pF
175Ω // 4.1pF
697 // YWWS
dB
40
°C
ppm/°C
2
ppm/yr
500 Pieces/Reel
3000 Pieces/Reel
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, f
c
. Note that insertion loss and band-
width and passband shape 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 -40°C to +105°C.
The turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
o
. The nominal frequency at any case temperature, T
c
, may
be calculated from: f = f
o
[1 - FTC (T
o
- T
c
)
2
].
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.
2.
3.
4.
5.
6.
7.
8.
9.
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 1 of 4
RF3404E - 10/7/08
RFM [ RF MONOLITHICS, INC ]
