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©2008 by RF Monolithics, Inc. RF1404D - 3/21/08
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency at 25°C Absolute Frequency fc1, 2, 3 433.92 MHz
Insertion Loss ILMIN 1, 3 1.6 2.5 dB
Passband Ripple (Relative to ILMIN) Fc ±200kHz 1, 3 1.2 1.8 dB
3 dB Bandwidth BW31, 3 500 600 800 kHz
Rejection Attenuation: (relative to ILmin) 10 - 414 MHz
1, 3
50 55
dB
414 - 424 MHz 45 50
424 - 431 MHz 30 34
431 - 432 MHz 18 22
432 - 433 MHz 12 17
434.92 - 442 MHz 11 14
442 - 550 MHz 35 38
550 - 1000 MHz 50 55
Temperature Freq. Temp. Coefficient FTC 0.032 ppm/°C2
Frequency Aging Absolute Value during the First Year |fA| 5 ≤10 ppm/yr
Impedance @ fc Input ZIN = RINllCIN Z
IN 12853Ω // 1.66pf
Output ZOUT = ROUTllCOUT ZOUT 2411Ω // 1.73pf
Lid Symbolization (Y=year WW=week S=shift) 539 // YWWS
Standard Reel Quantity Reel Size 7 Inch 9500 Pieces/Reel
Reel Size 13 Inch 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)
10
The RF1404D 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 th an 40 dB, of t he LO and image sp urious resp onses of superhet rec eivers 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.
433.9 2 MHz
SAW Filter
RF1404D
SM3838-8 Case
3.8 x 3.8
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Unless noted otherwise, all measurements are made with the filt er installed in the specified test f ixture 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 band-
width and passband shape 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°C to +90°C.
4. The turnover temperature, T O, is the temperature of maximum (or turnover) frequency, fo. The nominal f r equency 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.
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 Per ANSI / EIA 481.
10. This product complies with Directive 2002/95/EC of the European Parlament and of the Council of 27 January 2003 on the restriction of the use of
certain hazadous substances in electrical and electronic equipment.
Pb
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©2008 by RF Monolithics, Inc. RF1404D - 3/21/08
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency at 25°C Absolute Frequency fc1, 2, 3 433.92 MHz
Insertion Loss ILMIN 1, 3 2.3 3.0 dB
Passband Ripple (Relative to ILMIN) Fc ±200kHz 1, 3 1.2 2.0 dB
3 dB Bandwidth BW31, 3 500 600 800 kHz
Rejection Attenuation: (relative to ILmin) 10 - 414 MHz
1, 3
50 53
dB
414 - 424 MHz 45 50
424 - 431 MHz 30 34
431 - 432 MHz 18 22
432 - 433 MHz 12 14
434.92 - 442 MHz 11 14
442 - 550 MHz 35 37
550 - 1000 MHz 50 55
Temperature Freq. Temp. Coefficient FTC 0.032 ppm/°C2
Frequency Aging Absolute Value during the First Year |fA| 5 ≤10 ppm/yr
Impedance @ fc Input ZIN = RINllCIN Z
IN 12853Ω // 1.66pf
Output ZOUT = ROUTllCOUT ZOUT 2411Ω // 1.73pf
Lid Symbolization (Y=year WW=week S=shift) 539 // YWWS
Standard Reel Quantity Reel Size 7 Inch 9500 Pieces/Reel
Reel Size 13 Inch 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, fc. Note that insertion loss and band-
width and passband shape 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°C to +125°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.
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 Per ANSI / EIA 481.
10. This product complies with Directive 2002/95/EC of the European Parlament and of the Council of 27 January 2003 on the restriction of the use of
certain hazadous substances in electrical and electronic equipment.
Absolute Maximum Ratings
Characteristic Value Units
Input Power Level 10 dBm
DC Voltage 12 VDC
Storage Temperature -40 to +125 °C
Operable Temperature Range -40 to +125 °C
Soldering Temperature (10 seconds / 5 cycles max.) 260 °C
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©2008 by RF Monolithics, Inc. RF1404D - 3/21/08
7
6
54
1
2
3
8
Input
56 nH
Output
51 nH
Pin Connection
1 Input
2 Input Ground
3 Ground
4 Case Ground
5 Output
6 Output Ground
7 Ground
8 Case Ground
Matching Circuit to 50Ω
PRIMARY
Electri cal Conne ction s
A
1
2
3
B
7
6
5
4
C
H7
6
5
4
E
F
G
1
2
3
88
D
Case Dimensions
Pin Connection
1 Input Ground
2 Input
3 Ground
4 Case Ground
5 Output Ground
6 Output
7 Ground
8 Case Ground
OPTIONAL
Electrical Connections Matching Circuit to 50Ω
7
6
54
1
2
3
8Input
Output
1.0pf 1.5pf
56nH
56nH
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
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©2008 by RF Monolithics, Inc. RF1404D - 3/21/08
CH1 S11 1 U FS
CENTR 433 . 920 MHz SPAN 2. 000 MHz
Cor
PRm
CH2 S21 LOG 1 dB/ REF 0 dB
CENTER 433 . 920 000 MHz SPAN 2. 000 000 MHz
Cor
PRm
CH3 S22 1 U FS
CENTR 433 . 920 MHz SPAN 2. 000 MHz
Cor
13 Sep 2004 16:34:53
1
1 : 54 . 117 -1 . 7891 205 . 01 pF
433 . 920 000 MHz
1
2
3 4
1 : 0. 0000 dB 0. 000 000 MHz
Max REF=1
CH2 Markers
BW: . 612041 MHz
cent : 433 . 852345 MHz
Q: 708 . 86
1_ loss : -1 . 6656 dB
1
1 : 52 . 682 -10 . 119 36 . 247 pF
433 . 920 000 MHz
RF1404D (PRIMARY)
Inductor only match
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©2008 by RF Monolithics, Inc. RF1404D - 3/21/08
RF1404D (PRIMARY)
Inductor only match
CH2 S21 LOG 10 dB/ REF 0 dB
CENTER 433 . 920 000 MHz SPAN 100 . 000 000 MHz
Cor
PRm
13 Sep 2004 16:41:28
1
1 : -1 . 7186 dB 433 . 920 000 MHz
