RF3336E Datasheet, PDF (1/3 Pages) RF Monolithics, Inc – 868.35 MHz SAW Filter

• Front-End Filter for European Wireless Receivers
• Low-Loss, Coupled-resonator Quartz Design
• Simple External Impedance Matching
• Complies with Directive 2002/95/EC (RoHS)
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The RF3336E is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide
front-end selectivity in 868.35 MHz receivers. Receivers using this filter include superheterodynes with
10.7 MHz or 500 kHz IFs, direct conversion receivers and superregenerative receivers. Typical applications
of these receivers include 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.
RF3336E
868.35 MHz
SAW Filter
Electrical Characteristics
Characteristic
Center Frequency @ 25°C Absolute Frequency
Insertion Loss
3 dB Bandwidth
Attenuation:
(relative to ILmin)
10 - 700 MHz
700 - 830 MHz
830 - 850 MHz
850 - 864.4 MHz
870.4 - 877.4 MHz
877.4 - 882.4 MHz
882.4 - 900 MHz
900 - 1000 MHz
Temperature
Freq. Temp. Coefficient
Frequency Aging
Absolute Value during the First Year
Impedance @ f_C
Z_IN = R_IN || C_IN
Z_OUT = R_OUT || C_OUT
Lid Symbolization (in addition to Lot and/or Date Codes)
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
Sym
f_C
IL
BW₃
FTC
|fA|
Z_IN
Z_OUT
Notes
1, 2, 3
1, 3
1, 2, 3
1, 3
3, 4
5
1
9
SM3030-6 Case
3.0 x 3.0
Minimum Typical Maximum
868.35
2.5
4.0
500
650
900
50
55
40
45
35
40
20
25
21
26
15
19
28
35
40
45
0.032
<±10
55 Ω || 23.9 pF
53 Ω || 20.2 pF
700 || YWWS
500 Pieces/Reel
3000 Pieces/Reel
Units
MHz
dB
kHz
dB
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, f_c. Note that insertion loss and band-
width and passband shape are dependent on the impedance matching component values and quality.
2. The frequency f_c is defined as the midpoint between the 3dB frequencies.
3. Where noted specifications apply over the entire specified operating temperature range of -40 to 90°C.
4. 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].
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 for ANSI / EIA 481.
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RF3336E - 10/28/10