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參數(shù)資料
| 型號(hào)： | RF1295C |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 451.35 MHz SAW Filter |
| 中文描述： | 451.35兆赫SAW濾波器 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 62K |
| 代理商： | RF1295C |
RF Monolithics, Inc.
RFM Europe
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RF1295C-071904
Page 1 of 2
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency at
25°C
Insertion Loss
3 dB Bandwidth Passband
Nominal Frequency
f
nom
1, 3, 4, 5
451.35
MHz
IL
3, 6
2, 3, 6
2.5
1000
5.0
dB
kHz
BW
3
700
Rejection
at f
c
- 21.4 MHz (Image)
at f
c
- 10.7 MHz (LO)
Ultimate
Operating Case Temperature
3
35
45
dB
15
30
80
Temperature
T
C
T
O
f
O
FTC
2, 6
-40
+85
°C
Turnover Temperature
15
25
f
nom
0.032
40
°C
Turnover Frequency
MHz
ppm/°C
2
ppm/yr
nH
pF
Frequency Temperature Coefficent
Frequency Aging
Absolute Value during the 1
st
Year
Series Inductance
Shunt Capacitance
|fA|
L
C
1
C
2
2
6
6
<±10
27
5.6
External Impedance
Shunt Capacitance
6
8.2
pF
Lid Symbolization (Y=year, WW=week, D=day of week)
Standard Reel Quantity Reel Size 7 Inch
Reel Size 13 Inch
482 // YWWS
9
500 Pieces/Reel
3000 Pieces/Reel
Ideal Front-End Filter for 451.35 MHz Wireless Receivers
Low-Loss Coupled-Resonator Quartz Design
Simple External Impedance Matching
Complies with Directive 2002/95/EC (RoHS)
The RF1295C is a low-loss, compact, and economical surface acoustic wave (SAW) filter designed to pro-
vide front-end selectivity in 451.35 MHz receivers. Recevier designs using this filter include superhet with
10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are wire-
less 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 (not included).
451.35 MHz
SAW Filter
RF1295C
SM5050-8 Case
5 x 5
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 are dependent on the imped-
ance 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.
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. Typ-
ically, 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.
Pb
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