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参数资料
| 型号： | RF1211C |
| 厂商： | RFM |
| 文件页数： | 1/5页 |
| 文件大小： | 0K |
| 描述： | SAW FILTER 315MHZ SM5050-8 |
| 标准包装： | 500 |
| 频率： | 315MHz 中心 |
| 带宽： | 900kHz |
| 滤波器类型： | 带通 |
| 插入损耗： | 1.8dB |
| 应用： | 远程无钥匙启动 |
| 封装/外壳： | 8-SMD，无引线 |
| 安装类型： | 表面贴装 |
| 包装： | 带卷 (TR) |
| 高度（最大）： | 0.067"（1.70mm） |
| 尺寸/尺寸： | 0.197" L x 0.197" W（5.00mm x 5.00mm） |
RF1211C
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Ideal Front-End Filter for Domestic Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
315.0 MHz
SAW Filter
The RF1211C 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 advanced
SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple
external impedance matching.
Electrical Characteristics
SM5050-8 Case
5x5
Item
Minimum
Typical
Maximum
Note
Center Frequency @ 25°C
F C
(MHz)
-
315
-
1, 2
Minimum I.L. (314.82~315.22 MHz)
(dB)
IL min
-
2.0
5.0
1
Pass band (relative to IL min )
314.77~315.2 MHz
314.71~315.26 MHz
Pass bandwidth (relative to IL min )
(dB)
(dB)
BW 3 (KHz)
-
-
800
1.5
2.0
860
3.0
6.0
-
1
1
Attenuation: (relative to IL min )
(dB)
10~270
270~309
MHz
MHz
(dB)
(dB)
45
30
55
35
-
-
309~313.94
316~335
335~400
400~1000
MHz
MHz
MHz
MHz
(dB)
(dB)
(dB)
(dB)
15
10
35
45
20
15
45
55
-
-
-
-
1
Impedance at F C ; Input
Output
Turnover To
Z IN =R IN //C IN
Z OUT =R OUT //C OUT
(deg.C)
344 Ω // 4.9 pF
344 Ω // 4.9 pF
25 typ.
1
3, 4
Frequency Aging
Absolute Value During the First Year
≤ 10 ppm/yr Typical
Operating Temperature
Lid Symbolization (in addition to Lot and/or Date Codes)
-40°C to +85°C
410 YWWS
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
1000 Pieces/Reel
3000 Pieces/Reel
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 Ω 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 band-
width 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.
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.
6.
7.
8.
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.
The design, manufacturing process, and specifications of this device are subject to change without notice.
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.
RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148
RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510
?2013 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com Page 1 of 4
http://www.rfm.com
RF1211C 527-1211-002 061313 RevC
相关PDF资料 |
PDF描述 |
|---|---|
| RF1211 | SAW FILTER 315MHZ TO39-3 |
| RF1238 | SAW FILTER 318MHZ TO39-3 |
| RF1284 | SAW FILTER 319.508MHZ TO39-3 |
| RF1295C | SAW FILTER 451.35MHZ SM5050-8 |
| RF1301 | SAW FILTER 499.25MHZ TO39-3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RF1211D | 制造商:未知厂家 制造商全称:未知厂家 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 制造商全称:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER |
| RF-1212DH | 制造商:RECOM 制造商全称:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER |
| RF-1212S | 制造商:RECOM 制造商全称:Recom International Power 功能描述:ECONOLINE - DC/DC - CONVERTER |
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