參數(shù)資料
型號(hào): LA17000M
廠商: Sanyo Electric Co.,Ltd.
英文描述: Tuner System IC with Built-in PLL for Car Audio Applications
中文描述: 調(diào)諧器集成電路與系統(tǒng)專為汽車音響應(yīng)用的鎖相環(huán)
文件頁(yè)數(shù): 46/54頁(yè)
文件大?。?/td> 830K
代理商: LA17000M
LA17000M
No. 6522-46/54
(7) MRC circuit
1) When there is no AC noise on pin 48
V42 = V43–V
BE
Q
MRC
V43 is approximately 2.5 V when ANT input is 60 dB
μ
or higher.
2) Because the MRC noise amplifier gain is fixed, adjust MRC by reducing the AC input level.
3) The MRC attack and release are determined by C43 on pin 43.
Attack 7
μ
A C27
Release 500
C27
(8) FM soft mute
The stereo blend curve can be adjusted
through the R28 external resistor.
S-meter
FM
S-meter
Compare the pin 63 MUTE ON adjusting voltage and the V42 S-meter voltage, and adjust the MUTE ON point.
R
63
larger
R
63
smaller
R
63
larger
R
63
smaller
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