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LT10.7M Ceramic Filters for FM Receiver
Ceramic Filters for FM Receiver
(LT10.7M) Ceramic Filters are Compatible Murata SFELF10M7
Preview Token LT10.7M series are monolithic devices whichutilize the energy-trapped thickness vibration-mode. This principle of operation is based upon the fact that an excellent resonating element with low spurious vibration can be obtained by adhering to certain theoretical parameters of design. These parameters include the physical dimensions of the peizo element, the electrode pattern, and the associated mass loading effect of the electrodes. Token categorizes the LT 10.7 family according to rank of center frequency. This ranking indicates that a given LT 10.7 will be marked with one of the colors listed in the following chart and will exhibit the center frequency in Technical Characteristics Table. The LT10.7M offers three series: LT10.7M for FM Receiver (Compatible Murata SFELF10M7), LT10.7M A10 Insertion Loss 2.5±2.0 db ~ 4.5±2.0 db (Compatible Murata SFELF10M7 A10), and LT10.7M Wide Band-width 950 kHz at 20dB/Narrow Band-width 95 kHz at 20dB (Compatible Murata SFELF10M7 DBS Receiver). LT10.7M Narrow Band-width series features stable low spurious and temperature characteristics. This series is suitable for European car-audio or AM up conversion use that needs narrow band characteristics are stable. LT10.7M Wide Band-width series are specified to make up conventional ceramic filters which wider band characteristics not obtained. Custom parts are available on request. Token will also produce devices outside these specifications to meet specific customer requirements, please contact our sales for more information. Applications - Change in center frequency is typically within ±30ppm/°C at -20°C to +80°C. - Various band widths are available for applications in wide to narrow bands. - Low loss, favorable waveform symmetry, and high selectivity. - These miniature filters have high mechanical strength. - Excellent shape factor of frequency response. - Small dispersion and stable characteristics. - Good waveform symmetry. - High reliability. Version 2010
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Dimensions
LT10.7M Ceramic Filters for FM Receiver
7.0±2.0 Color 2 4.0max 7.0±2.0 0.3±0.1 ② ① 2.5±0.3 5.0±1.0 ① Input ② Ground ③ Output Color 1:A5,S2,JA10 Color 2:S3,HY
Color 1
L10.7A 2.5±0.3 0.5±0.1 ③ 2.5±0.3
FM Receiver (Murata SFE10M7 FM-IF Compatible) Technical Characteristics Part Number LT10.7MA5 LT10.7MS2 LT10.7MS3 3dB Band Width (kHz) 280±50 230±50 180±40 20dB Band Width (kHz) max 650 600 520 Insertion Loss (dB) max 6 6 7 Spurious Attenuation (9-12MHz)(dB)min 30 40 40
Note: Input/Ouput Impedance:330Ω
Low - Loss Type (Murata SFE10M7 A10 Compatible) Technical Characteristics PartNumber LT10.7MA5A10 LT10.7MS2A10 LT10.7MS3A10 LT10.7MJA10 3dB Band Width(kHz) 280±50 230±50 180±40 150±40 20dB Band Width(kHz) max 590 520 470 360 Insertion Loss(dB) 2.5±2.0 3.0±2.0 3.5±1.5 4.5±2.0 Spurious Attenuation (9-12MHz)(dB)min 30 35 35 35
Note: Input/Ouput Impedance:330Ω
Wide/Narrow Band-width (Murata SFE10M7 DBS Receiver Compatible) Technical Characteristics Part Number LT10.7MA19 LT10.7MA20 LT10.7MHY LT10.7MFP 3dB Band Width (kHz) 350min 330±50 110±30 20min 20dB Band Width (kHz) max 950 680 350 95 Insertion Loss (dB) 3.0±2.0 4.0±2.0 7.0±2.0 6.0max Spurious Attenuation (9-12MHz)(dB)min 20 30 30 24(10.7±1.0MHz)
Note: Input/Ouput Impedance:470Ω(MA19),330Ω(MA20,MHY),600Ω(MFP)
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Characteristics
0 Attenuation(dB) 10 20 30 40
LT10.7M Ceramic Filters for FM Receiver
LT10.7MS2 Attenuation(dB) LT10.7MS3
LT10.7MA5 Attenuation(dB)
0 10 20 30 40
0 10 20 30 40
10.3 10.5 10.7 10.9 11.1 Frequency(MHz)
10.3 10.5 10.7 10.9 11.1 Frequency(MHz)
10.3 10.5 10.7 10.9 11.1 Frequency(MHz)
Test Circuit
R1 Rg
① ②
③
~
S.S.G
R2
C
RF V.M
Rg + R1 = R2 = 330 Ω C = 10pF Including stray capacitance and input capacitance of RF voltmeter
1. When using ceramic filters, it is most important to match the input/output load to impedance 330 ohm (LT10.7MA19 is 470 ohm matching). Waveform symmetry is damaged when reactance is added to the input/output load. 2. Two ceramic filters directly connected can be used for high selectivity. For reducing waveform variation, it is recommended to input a buffer AMP between ceramic filters. 3. The LT10.7M series are of input/output symmetric structure so that in theory there is no input/output directionality. Actual circuits may use different input/output loading conditions (for example, mismatched impedance) or capacitance load. In such cases, the waveform will be a little changed by the direction of the input/output of the ceramic filters.
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LT10.7M Ceramic Filters for FM Receiver
Standard Marking Color Center Frequency D:10.64MHz±30kHz B:10.67MHz±30kHz A:10.70MHz±30kHz C:10.73MHz±30kHz E:10.76MHz±30kHz Color Black Blue Red Orange White
How to Order
LT10.7MA5 Part Number
Part Number LT10.7MA5 LT10.7MS2 LT10.7MS3 LT10.7MA5A10 LT10.7MS2A10 LT10.7MS3A10 LT10.7MJA10 LT10.7MA19 LT10.7MA20 LT10.7MHY LT10.7MFP
A
P Center Frequency color code
Code A B C D E Center Frequency color code 10.70MHz±30kHz Red 10.67MHz±30kHz Blue 10.73MHz±30kHz Orange 10.64MHz±30kHz Black 10.76MHz±30kHz White
Package
Code P TB Package Bulks Tab Box
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