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| 型號(hào)： | RF1183 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 449K |
| 代理商： | RF1183 |
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) 387-9148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RF1181B-050200
Page 1 of 2
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Nominal Frequency
f
c
IL
2, 4, 5, 6
3, 4, 7
2, 3, 4, 7
916.5
MHz
Insertion Loss
3 dB Passband
4.0
5.0
dB
kHz
BW
3
BW
3
±135
3 dB Reject
2, 3, 4, 7
±530
kHz
Rejection
at f
c
- 21.4 MHz (Image)
at f
c
- 10.7 MHz (LO)
Ultimate
Operating Case Temp.
4
33
40
dB
15
37
80
Temperature
T
C
T
O
f
O
FTC
3, 7, 8
-40
+85
°C
°C
Turnover Temperature
15
25
40
Turnover Frequency
f
c
MHz
Freq. Temp. Coefficient
0.032
ppm/°C
2
ppm/yr
nH
pF
Frequency Aging
External Impedance
Absolute Value during the First Year
Series Inductance
Shunt Capacitance
|fA|
L
C
3
±
10
1, 7
11 to 15
2.5 to 10
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM RF1181B
SM8558-8 Case
Ideal Front-End Filter for 916.5 MHz Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Surface-Mount Ceramic Case with 52 mm
2
Footprint
The RF1181B is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide front-end selectivity in 916.5 MHz receivers. Receiver designs using this filter include superhet with
10.7 MHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remote-
control and security, data telemetry, and meter reading devices operating in the USA under FCC Part 15 and
in Canada under DoC RSS-210.
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). Our new patent pending solder seal process utilizes a
Faraday shield lid, which improves out of band rejection.
916.5 MHz
SAW Filter
RF1181B
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Typical demonstration circuit shown is for SM8558-8 solder seal filters.
2. Passband and reject bands are specified in reference to f
c
.
3. All characteristics are specified over the operating temperature range and typical aging is 10 years.
4. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture. Note that insertions loss, bandwidth, and
passband shape are dependent on the impedance matching component values and quality. Demonstration circuits are available for confirmation of
device performance.
6. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.
7. The design, manufacturing process, and specifications of this device are subject to change without notice.
8. The turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
o
. The nominal frequency at any case temperature, T
c
, out-
side the operating temperature range may be calculated from: f = f
o
[1 - FTC (T
o
- T
c
)
2
].
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