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TFS1238-SAW-Filter

更新时间： 2024-10-01 14:52:39
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美国微芯 - MICROCHIP /
页数 文件大小 规格书
5页 200K
描述
Surface Acoustic Wave (SAW) devices are compact, cost competitive radio frequency (RF) solutions t

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TFS1238-SAW-Filter 数据手册

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Filename: tfs 1238.doc  
Version 1.3  
18.04.2014  
Microchip  
Filter specification  
TFS 1238  
1/5  
Measurement condition  
Ambient temperature:  
Input power level:  
Terminating impedance:  
Input:  
23  
0
°C  
dBm  
49 Ω || -1.4 pF  
49 Ω || -1.4 pF  
Output:  
Characteristics  
Remark:  
The maximum attenuation in the pass band is defined as the insertion loss a . The nominal frequency fN is fixed at 1238.0 MHz without any tolerance or  
e
limit. The values of absolute attenuation a  
are guaranteed for the whole operating temperature range. The frequency shift of the filter in the operating  
abs  
temperature range is included in the production tolerance scheme.  
D a t a  
typ. value  
tolerance / limit  
Insertion loss in PB  
Nominal frequency  
Passband  
a
3.8  
dB  
max.  
fN  
5.0  
dB  
e
fN  
-
-
1238.0  
MHz  
MHz  
PB  
±
41.0  
1.5  
3.0  
Passband ripple  
p - p  
1.0  
1.5  
dB  
dB  
max.  
max.  
dB  
dB  
Passband variation  
Absolute attenuation  
a
abs  
0.3  
1000  
MHz … 1000  
MHz  
MHz  
MHz  
MHz  
MHz  
MHz  
29  
dB  
dB  
dB  
dB  
dB  
dB  
min.  
min.  
min.  
min.  
min.  
min.  
25  
dB  
dB  
dB  
dB  
dB  
dB  
MHz … 1100  
MHz … 1150  
MHz … 1350  
MHz … 1900  
MHz … 3000  
29  
26  
14  
30  
34  
-
25  
10  
10  
25  
25  
1100  
1325  
1350  
1900  
***)  
Group delay ripple  
1197  
MHz … 1228  
MHz  
MHz  
MHz  
7
5
8
3
ns  
ns  
ns  
ns  
max.  
max.  
max.  
max.  
10  
10  
ns  
ns  
ns  
ns  
1237  
MHz … 1254  
1258.5  
MHz … 1278.5  
10  
Group delay variation  
(unit to unit)  
*)  
+/- 5  
Return loss within PB  
15  
-
dB  
min.  
8
dB  
Input power level in PB  
max.  
10  
dBm  
Operating temperature range  
Storage temperature range  
OTR  
-
-
- 40 °C ... + 85°C  
- 40 °C ... + 85°C  
Temperature coefficient of frequency  
TC **)  
-74  
ppm/K  
f
*) measured at: 1197 MHz, 1238 MHz and 1278.5 MHz  
**) f (Hz) = Tcf(ppm/K) x (T - To) x fCAT (MHz)  
c
***) if on PCB Pin 4 and 8 is not connected ; stop band rejection decreases typically by 15dB  
Generated:  
Checked / Approved:  
Microchip Frequency Technology GmbH  
Potsdamer Straße 18  
D 14 513 TELTOW / Germany  
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30  
Microchip Frequency Technology GmbH reserves the right to make changes to the product(s) and/or information contained herein  
without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any  
such product(s) or information.  
12345

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