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©2008 by RF Monolithics, Inc. RF3319D - 3/21/08
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency @ 25°C Absolute Frequency fC1, 2, 3 868.95 MHz
Insertion Loss IL 1 2.2 4.0 dB
3 dB Bandwidth BW31, 3 500 650 900 kHz
Attenuation:
(relative to ILmin)
10 - 700 MHz
1, 3
50 55
dB
700 - 830 MHz 40 45
830 - 850 MHz 35 40
850 - 865 MHz 20 24
871 - 878 MHz 21 30
878 - 883 MHz 15 20
883 - 900 MHz 28 35
900 - 1000 MHz 40 45
Temperature Freq. Temp. Coefficient FTC 3, 4 0.032 ppm/
°C2
Frequency Aging A bsolute Value during the First Year |fA| 5 <±10 ppm/yr
Impedance @ fC Input ZIN = RIN/CIN ZIN 128.8 Ω // 1.93pF
Output ZOUT = ROUT/COUT ZOUT 26.9 Ω // 2.2pF
Lid Symbolization (in addition to Lot and/or Date Codes) 668 // YWWS
Standard Reel Quantity 7 Inch Reel 9500 Pieces/Reel
Standard Reel Quantity 13 Inch Reel 3000 Pieces/Reel
• 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)
The RF3319D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide
front-end selectivity in 868.95 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, 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
SA W design and fabrication technology is utilized to achieve high performance and very low loss with simple
external impedance matching (not included).
868.9 5 MHz
SAW Filter
RF3319D
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 t o 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 band-
width 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 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-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 without notice.
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.
SM3838-8 Case
3.8 x 3.8
Pb
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©2008 by RF Monolithics, Inc. RF3319D - 3/21/08
Absolute Maximum Ratings
Rating Value Units
Input Power Level 10 dBm
DC V oltage 12 VDC
S torage Temperature -40 to +125 °C
Operable Temperature Range -40 to +125 °C
Soldering Temper ature (10 seconds / 5 cycles max.) 260 °C
Pin Connection
1 Input Ground
2 Input
3N/C
4 Case Ground
5 Output Ground
6 Output
7 Case Ground
8 Case Ground
Matching Circuit to 50Ω
Electrical Connections
A
1
2
3
B
7
6
5
4
C
H7
6
5
4
E
F
G
1
2
3
88
D
Matching Circuit to 50Ω
Pin Connection
1 Input
2 Input Ground
3N/C
4 Case Ground
5 Output
6 Output Ground
7 Case Ground
8 Case Ground
Electrical Connections Matching Circuit to 50Ω
OPTIONAL
7
6
54
1
2
3
8Input
Output 10 nH 10 nH
7
6
54
1
2
3
8
Output 10 nH
Input
10 nH
Case Dimensions
Dimension mm Inches
Min Nom Max Min Nom Max
A3.6 3.8 4.0 0.14 0.15 0.16
B3.6 3.8 4.0 0.14 0.15 0.16
C1.00 1.20 1.40 0.04 0.05 0.055
D0.95 1.10 1.25 0.033 0.043 0.05
E0.90 1.0 1.10 0.035 0.04 0.043
F0.50 0.6 0.70 0.020 0.024 0.028
G2.39 2.54 2.69 0.090 0.100 0.110
H1.40 1.75 2.05 0.055 0.069 0.080
