參數(shù)資料
型號(hào)： LA17000M
元件分類： 接收器
英文描述： AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP80
封裝： 14 X 14 MM, QFP-80
文件頁(yè)數(shù)： 30/54頁(yè)
文件大?。?/td> 830K
代理商： LA17000M
LA17000M
No. 6522-36/54
Continued from preceding page.
Pin No.
Function
Equivalent circuit
Description
50
AFC
51
QD output
52
QD input
53
VREF
54
FM SD Adi
55
Keyed AGC
AM stereo buffer
A13349
A13350
Continued on next page.
A13351
R1: Resistor that determines the
band muting function.
Increasing the value of R1 narrows
the band
Reducing the value of R1 widens
the band.
Null voltage
Voltage between pins 50 and 53
during tuning:
V50-53 = 0 V
Band muting turns on when
|V50-53|
≥ 0.7 V.
V53 = 4.9V
Quadrature
detection
Current of 130
A flows from pin 54
and comparison voltage is
determined by external resistance.
The keyed AGC operates when the
voltage divided by the 6.4-k
and
3.6-k
resistors on S-meter output
pin 42 falls below the voltage
determined by the resistor between
pin 55 and GND.
Shared pin for the AM stereo decoder
IF buffer.
S-meter
BAND
MUTE
1F limiter AMP
Comparator
相關(guān)PDF資料
PDF描述
LA1776M 2-BAND, AUDIO TUNER, PQFP64
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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