- 您現在的位置：買賣IC網 > PDF目錄384882 > RF1211B (RF Monolithics, Inc.) 315.0 MHz SAW Filter PDF資料下載
參數資料
| 型號： | RF1211B |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 315.0 MHz SAW Filter |
| 中文描述： | 315.0兆赫SAW濾波器 |
| 文件頁數： | 1/2頁 |
| 文件大?。?/td> | 80K |
| 代理商： | RF1211B |
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
RF1211B-030102
Page 1 of 2
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Nominal Frequency
f
c
1, 2
315.00
MHz
dB
dB
Tolerance from 315.0 MHz
fc
IL
BW
3
±80
3.0
Insertion Loss
1
1.7
3 dB Bandwidth
Rejection
1, 2
500
700
800
kHz
at f
c
- 21.4 MHz (Image)
at f
c
- 10.7 MHz (LO)
Ultimate
Operating Case Temp.
1
40
50
dB
15
40
80
Temperature
T
C
T
O
f
O
FTC
3, 4
-40
+85
°C
Turnover Temperature
22
37
f
c
52
°C
Turnover Frequency
MHz
ppm/°C
2
ppm/yr
Freq. Temp. Coefficient
0.032
≤
10
Frequency Aging
Absolute Value during the First Year
Series Inductance
Shunt Capacitance
|fA|
L
C
5
External Impedance
1
86 nH (Pin 1), 82 nH (Pin 2)
9
RFM RF1211B
pF
Lid Symbolization (in addition to Lot and/or Date Codes)
SM8558-8 Case
Ideal Front-End Filter for Domestic Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Surface-Mount Ceramic Case with 52 mm
2
Footprint
Complies with Directive 2002/95/EC (RoHS)
The RF1211B is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide front-end selectivity in 315.0 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 (especially for automotive keyless entry) operating in the USA
under FCC Part 15, in Canada under RSS-210, and in Italy
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.
315.0 MHz
SAW Filter
RF1211B
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.
相關PDF資料 |
PDF描述 |
|---|---|
| RF1211C | 315.0 MHz SAW Filter |
| RF1238B | 318.0 MHz SAW Filter |
| RF1238 | 318.0 MHz SAW Filter |
| RF1284 | 319.500 MHz SAW Filter |
| RF1295C | 451.35 MHz SAW Filter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| RF1211C | 功能描述:信號調節 315.00MHz Narrowband Receiver Front End RoHS:否 制造商:EPCOS 產品:Duplexers 頻率:782 MHz, 751 MHz 頻率范圍: 電壓額定值: 帶寬: 阻抗:50 Ohms 端接類型:SMD/SMT 封裝 / 箱體:2.5 mm x 2 mm 工作溫度范圍:- 30 C to + 85 C 封裝:Reel |
| RF1211D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:315.0 MHz SAW Filter |
| RF1212-000 | 制造商:TE Connectivity 功能描述:SURGE PROTECTOR 220V SMA 50A |
| RF-1212D | 制造商:RECOM 制造商全稱:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER |
| RF-1212DH | 制造商:RECOM 制造商全稱:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER |
發布緊急采購，3分鐘左右您將得到回復。