參數(shù)資料
型號(hào)： LA1780M
元件分類： 調(diào)諧器
英文描述： 2-BAND, AUDIO TUNER, PQFP64
封裝： QFP-64
文件頁(yè)數(shù)： 17/38頁(yè)
文件大?。?/td> 764K
代理商： LA1780M
MRC circuit
If there is no AC noise on pin 32:
V27 will be about 2.5 V for an antenna input of 60 dB or higher.
Since the MRC noise amplifier gain is fixed, the MRC circuit is adjusted by reducing the AC input level.
The MRC circuit attack and release times are determined by the capacitor C27 on pin 27.
Attack: 7 A
× C27
Release: 500
× C27
5. FM Soft Muting
By comparing the pin 47 mute on adjustment voltage to the S-meter voltage (V24), the muting on point can be adjusted.
No. 5724-24/38
LA1780M
S-meter
FM
S-meter
To SNC
Pin 28
Noise amplifier
fc = The MPF + AMP 70 kHz
Required external transistor: 2SC536 or equivalent
Reason: Since the LA1780M MRC is a simplified
circuit, an OMRC level shifter is required.
V24 = V27 – VBE
↑
QMRC
Smaller R47
Larger R47
Larger
R47
Smaller R47
相關(guān)PDF資料
PDF描述
LA1781M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1784M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1787NM AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1787NM AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1800 AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP22
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA1780MA-A-MPB-E 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:FTRAY - ANALOG CAR RADIO TUNER
LA1781M 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Car Radios Single-Chip Tuner IC
LA1781M_09 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Car Radios Single-Chip Tuner IC
LA1781MA-MPB-E 功能描述:調(diào)諧器 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:
LA1781MD-A-MPB-E 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays
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

*
*
*