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參數資料
| 型號： | RF1283 |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | 1 FUNCTIONS, 433.92 MHz, SAW FILTER |
| 封裝： | ROHS COMPLIANT, HERMETIC SEALED, TO39-3, 3 PIN |
| 文件頁數： | 1/2頁 |
| 文件大小： | 241K |
| 代理商： | RF1283 |
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
RF1283-082801
Page 1 of 2
Electrical Characteristics
Characteristic
Absolute Frequency
Tolerance from 433.92 MHz
Sym
f
C
f
C
IL
BW
3
Notes
Minimum
433.840
Typical
Maximum
434.00
±80
5.0
700
Units
MHz
kHz
dB
kHz
Center Frequency at 25°C
1, 2
Insertion Loss
3 dB Bandwidth
Rejection
1
3
1, 2
400
40
15
500
50
30
at f
C
- 21.4 MHz (Image)
at f
C
- 10.7 MHz (LO)
Ultimate
Operating Case Temp.
Turnover Temperature
Turnover Frequency
Freq. Temp. Coefficient
Absolute Value during the First Year
Series Inductance
1
dB
80
Temperature
T
C
T
O
f
O
FTC
|fA|
L1
L2
C1
C2
3, 4
-35
20
+85
30
°C
°C
MHz
ppm/°C
2
ppm/yr
nH
25
f
C
0.032
≤
10
33
39
6.8
8.2
Frequency Aging
External Impedance
5
1
Shunt Capacitance
pF
Lid Symbolizaation (in addition to Lot and/or Date Codes)
RFM RF1283
TO39-3 Case
Ideal Front-End Filter for European Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Rugged TO39 Hermetic Package
Complies with Directive 2002/95/EC (RoHS)
The RF1283 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 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 ad-
vanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with
simple external impedance matching (not included). Quartz construction provides execellent frequency sta-
blility over a wide temperature range.
433.92 MHz
SAW Filter
RF1283
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, 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. Unless noted otherwise, specifications apply over the entire specified operating temperature range.
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 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.
Pb
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