- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄30714 > LA1784M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 PDF資料下載
參數(shù)資料
| 型號(hào)： | LA1784M |
| 元件分類(lèi)： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封裝： | QIP-64 |
| 文件頁(yè)數(shù)： | 36/50頁(yè) |
| 文件大小： | 568K |
| 代理商： | LA1784M |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)當(dāng)前第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)
No. 6039-41/50
LA1784M
+
32
A11769
(1) When there is no AC noise on pin 32
V24 = V27–VBE
↑
QMRC
V27 is about 2.5 V when the antenna input is 60 dB or higher.
(2) Since the MRC noise amplifier gain is fixed, the MRC circuit is adjusted by reducing the AC input level.
(3) The MRC attack and release are determined by C27 on pin 27.
Attack: 7 A C27
→ 2 A C27
Release: 500
C27 → 100
Notes on the Noise Canceler
The noise canceler characteristics have been improved by implementing the circuit that determines the gate time in
logic. Since the time constant in earlier noise cancelers was determined by an RC circuit such as that shown in figure
52, the rise time shown in figure 53 was influenced by the values of the resistor and capacitor used. As a result the
noise exclusion efficiency was reduced by this delay in the rise time. In the LA1784M, this rise time was shortened by
implementing the circuit that determines the gate time in logic, allowing it to reliably exclude noise.
Fig. 51
A11771
A11772
Fig. 52
Fig. 53
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1800 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP22 |
| LA1805 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| LA1806 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1787M | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M_09 | 制造商:SANYO 制造商全稱(chēng):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(chēng):Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM_09 | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。