參數(shù)資料
型號(hào)： LA1136N
廠商： Sanyo Electric Co.,Ltd.
英文描述： AM Tuners for Car Radios and Home Stereos(應(yīng)用于車載電臺(tái)和家庭立體聲的AM調(diào)諧器)
中文描述： 上午車用收音機(jī)調(diào)諧器和家庭影院（應(yīng)用于車載電臺(tái)和家庭立體聲的上午調(diào)諧器）
文件頁(yè)數(shù)： 12/28頁(yè)
文件大?。?/td> 573K
代理商： LA1136N
LA1136N, LA1137N Usage Notes
1.
2.
Do not connect the antenna alignment circuit and local oscillation circuit.
The coils should be specified to obtain an output level of –25 dBm (43.6 mVrms) for the given input levels shown below,
and under the conditions fm = 400 Hz, 30% modulation and f
OSC
= 1.45 MHz.
Antenna input
Mixer input
IF input
Detector input
20.0 dBμ (Note)
30.5 dBμ
38.0 dBμ
106.0 dBμ
Input connections
Note : The antenna input can be adjusted by changing the number of turns in the primary winding of the alignment coil in
accordance with the AGC figure-of-merit.
3. Coil Design Notes
Gain adjustment: The gain is adjusted by varying the primary turns ratio of the primary coil.
.
Coupling: The design of this coil is geared towards critical coupling.
The coupling is dependent on the turns ratio of the primary coil and the secondary coil:
Tight coupling: High turns ratio
Loose coupling: Low turns ratio
.
With tight coupling, the selectivity characteristic develops a double hump; when making a tracking adjustment, it must
be noted that misadjustment can occur, leading to a deterioration of the dual signal characteristics.
.
With loose coupling, selectivity increases, but the sensitivity error within the band of the RF alignment itself also
increases.
(1) RF alignment coil
During design, be certain to confirm data such as that for coil specifications. Furthermore, it is also necessary to note that
although the turns ratio of the primary and secondary coils have the greatest bearing on coupling, the shape of the coil core
and the manner in which the coil is wound also have an impact.
Mixer input
Antenna input
Detector input
IF input
V12 = 0 for LA1136N
Unit (resistance:
, capacitance: F)
LA1136N, 1136NM, 1137N, 1137NM
No. 3507-12/28
相關(guān)PDF資料
PDF描述
LA1140 FM IF System for Car Radio
LA1143 FM IF System for Car Radios
LA1145 FM IF System (Quadrature Detector) for Car Radio
LA1145M FM IF System (Quadrature Detector) for Car Radio
LA1150N FM IF Amplifier for Car Radio
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA1136NM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
LA1137N 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137NM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
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