參數(shù)資料
型號(hào)： LA1787M
元件分類： 接收器
英文描述： AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝： 14 X 14 MM, QFP-64
文件頁(yè)數(shù)： 27/54頁(yè)
文件大?。?/td> 606K
代理商： LA1787M
However, when testing this stop sensitivity, note that when checking the waveform on the IF count buffer output
(pin 23), there are cases, such as that shown below, where current in the test system may be seen as flowing to
ground and cause oscillation that causes the IF count buffer output to go to the output state.
FM Muting control pin (pin 47) (R47: 30 k
variable resistor)
The –3 dB limiting sensitivity can be adjusted with R47.
FM muting attenuation adjustment (pin 58)
The muting attenuation can be switched between the three levels of –20, –30, and –40 dB by the resistor inserted
between pin 58 and ground. (Note that the exact values depend on the total tuner gain.)
The noise convergence with no input is determined by the pin 58 voltage.
The attenuation can be set by making R33 smaller as listed
in the table above.
No. 6655-33/54
LA1787M
IF buffer
amp
IF
F.E.
5 V
0.022
F
The 10.7 MHz feeds back through ground.
Test system capacitance
A12081
FM Soft Muting (1)
Antenna input — dB
O
u
tp
u
t
n
o
is
e
—
d
B
DET out
Noise
15 k
10 k
20 k
R47 = 7.5 k
Fig.19
58
100
R58
A11764
R33
A11765
33
Fig. 18
Fig. 20
R58
Mute ATT
Open
–20 dB
200 k
–30 dB
30 k
–40 dB
Output,
noise
—
dB
相關(guān)PDF資料
PDF描述
LA1810 AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24
LA2232 SPECIALTY CONSUMER CIRCUIT, DIP24
LA2232M SPECIALTY CONSUMER CIRCUIT, PDSO24
LA2902V 4 CHANNEL, AUDIO AMPLIFIER, PDSO24
LA3361 FM, AUDIO DEMODULATOR, PDIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA1787M_09 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios
LA1787M-MPB-E 功能描述:調(diào)諧器 CAR RADIO TUNER RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度:
LA1787NM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC
LA1787NM_09 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC
LA1787NM-MPB-E 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / ANALOG CAR RADIO TUNER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*