参数资料
型号: LA1867NM
元件分类: 接收器
英文描述: AM/FM, AUDIO DEMODULATOR, PQFP44
封装: QIP-44
文件页数: 8/32页
文件大小: 1074K
代理商: LA1867NM
Continued from preceding page.
MRC Block
No. 4619-16/32
LA1867NM
Pin
Function
Equivalent internal circuit
Note
38
Noise AGC sensitivity
39
adjustment pins
35
HPF slope adjustment pin
Pin 38 is the noise sensitivity setting pin.
First set the medium field (about 50 dBμ)
level, and the set the weak field (about 20 to
30 dBμ) with pin 39 (AGC adjustment).
The slope of the high-pass filter can be
adjusted by changing the value of the
resistor (R) connected between pin 35 and
ground. If this adjustment is not needed,
pin 35 can be left open.
Pin
Function
Equivalent internal circuit
Note
18
IF S-meter output and MRC
DC input pin
S-meter output block
MRC DC input block
Continued on next page.
Unit (resistance:Ω, capacitance:F)
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