參數(shù)資料
型號: LA1140
廠商: Sanyo Electric Co.,Ltd.
英文描述: FM IF System for Car Radio
中文描述: 如果系統(tǒng)的汽車收音機調(diào)頻
文件頁數(shù): 3/15頁
文件大?。?/td> 518K
代理商: LA1140
Equivalent Circuit Block Diagram
AC Test Circuit
Muting Characteristic
The muting operation in the LA1140 is performed by an AF preamplifier, the gain of which varies continuously with control
current, and a muting drive output circuit which supplies the control current.
The gain of the AF preamplifier decreases with increasing gain control current applied to pin 6. However, the gain does not
decrease further when the control current reaches approximately 120 μA or greater. The lower limit of the gain under this
condition depends upon a resistor connected between pin 5 and GND, and the higher the resistance the lower the gain (the higher
the attenuation). Thus the maximum muting attenuation will be set by connecting the resistor between pin 5 and GND.
T1: CBTKAC-24782 AUO (Toko Co.)
T2: CBTKAE-24783X (Toko Co.)
22μH: S-220J (Korin Co.)
Input signal strength is an actual input at pin 1
Signal
strength
Ind.
Unit (resistance:
, capacitance: F)
AF output
R5-G (lower) 20 k
R5-G (higher) 100 k
A
LA1140
No. 729-3/15
相關(guān)PDF資料
PDF描述
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
LA1175 FM Front End For Car Radio, Home Stereo Applications
相關(guān)代理商/技術(shù)參數(shù)
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