RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
Page 1 of 3
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RF1400D-062405
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency at 25C
Absolute Frequency
f
c
1, 2, 3
433.92
MHz
Insertion Loss
IL
1, 3
2.0
3.0
dB
3 dB Bandwidth
BW
3
1, 2, 3
1000
1150
kHz
Rejection
10 - 414 MHz
1, 3
40
50
dB
414 - 425 MHz
30
40
426 - 432 MHz
16
20
435 - 442 MHz
12
15
442 - 550 MHz
26
30
550 - 1000 MHz
45
50
Frequency Temperature Coefficient
FTC
0.032
ppm/C
2
Frequency Aging
Absolute Value during the First Year
|fA|
5
10
ppm/yr
Impedance @ fc
Input Z
IN
= R
IN
llC
IN
Z
IN
1
279
ll 4.1pf
Output Z
OUT
= R
OUT
llC
OUT
Z
OUT
279
ll 4.1pf
Lid Symbolization (Y=year WW=week D=day of week)
490 // YWWS
Standard Reel Quantity Reel Size 7 Inch
9
500 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
Wide Bandwidth for Multi-Channel Receiver Application
Complies with Directive 2002/95/EC (RoHS)
The RF1400D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide 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. Wider bandwidth for channelized receiver
applications.
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 ad-
vanced SAW design and fabrication technology is utilized to achieve high performance and very low loss
with simple external impedance matching.
433.92 MHz
SAW Filter
RF1400D
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 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 bandwidth 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 -40C to +105C.
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 +65C or less. Aging may exceed the specification for prolonged temperatures above +65C. Typ-
ically, 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.
Pb
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