- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄32287 > LA1787M (SANYO SEMICONDUCTOR CO LTD) AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | LA1787M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 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 |
| 文件頁數(shù)： | 39/54頁 |
| 文件大?。?/td> | 606K |
| 代理商： | LA1787M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁當(dāng)前第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
No. 6655-44/54
LA1787M
+
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 LA1787M, 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 |
|---|---|
| LA1787M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1810 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| LA2232 | SPECIALTY CONSUMER CIRCUIT, DIP24 |
| LA2232M | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| LA2902V | 4 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
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，3分鐘左右您將得到回復(fù)。