- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30724 > LA75694M AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 PDF資料下載
參數(shù)資料
| 型號(hào)： | LA75694M |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封裝： | 0.300 INCH, MFP-24 |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 226K |
| 代理商： | LA75694M |
LA75694M
No.A0251-8/10
V23.V24. APC pull-in range [fpu, fpl]
(1) Internal AGC
(2) fp = 39MHz to 51MHz continuous wave; 10mVrms
(3) Adjust the SG signal frequency to be higher than fp = 45.75MHz to bring the PLL to unlocked state.
Note : The PLL is assumed to be in unlocked state when a beat signal appears at test point A.
(4) When the SG signal frequency is lowered, the PLL is brought to locked state again. f1
(5) Lower the SG signal frequency to bring the PLL to unlock state.
(6) When the SG signal frequency is raised, the PLL is brought to locked state again. f2
(7) Calculate as follows :
fpu = f1 – 45.75MHz
fpl = f2 – 45.75MHz
V25. AFT tolerance frequency 1 [
Fa1]
(1) Internal AGC
(2) SG1 : 43.75MHz to 47.75MHz variable continuous wave 10mVrmns
(3) Adjust the SG1 signal frequency so that the AFT output DC voltage (test point B) becomes 2.5V;
that SG1 signal frequency is f1.
(4) External AGC (Adjust the V17.)
(5)Apply 5V to the IF AGC (pin 17) and then pick up the VCO oscillation frequency from GND, etc.;
and measure the frequency f2
(6) Calculate as follows :
AFT tolerance frequency :
Fa1 = f2 – f1 (kHz)
V26.V27. VCO maximum variable range (U, L) [dfu, dfl]
(1) Apply the VCC voltage to the external AGC, IF AGC (pin 17).
(2) Pick up the VCO oscillation frequency from the VIDEO output (A), GND, etc.
and adjust the VCO coil so that the frequency becomes 45.75MHz.
(3) fl is taken as the frequency when 1V is applied to the APC pin (pin 9).
In the same manner, fu is taken as the frequency when 5V is applied to the APC pin (pin 9).
dfu = fl–45.75MHz
dfl = fl–45.75MHz
V28. VCO control sensitivity [
β]
(1) Apply the VCC voltage to the external AGC, IF AGC (pin 17).
(2) Pick up the VCO oscillation frequency from the VIDEO output (A), GND, etc. and adjust the VCO coil
so that the frequency becomes 45.75MHz.
(4) f1 is taken as the frequency when 3.0V is applied to the APC pin (pin 9).
In the same manner, f2 is taken as the frequency when 3.4V is applied to the APC pin (pin 9).
β =
(kHz/mV)
V29. Synchronization ratio [VS]
(1) Internal AGC
(2) fp = 45.75MHz 87.5% 10STEP B/W
Vi = 10mVrms
(3) Measure the output amplitude at the measuring point A. Vvideo
(4) Measure the pedestal voltage (DC) at the measuring point A. Vped
VS = (Vped–V6tip) / Vvideo×100 (%)
f2–f1
400
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA75694M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75695VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75695VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7570 | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| LA75710VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA75695VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Use in TV/VTR Applications IF Signal Processing (VIF+SIF+SIF converter) |
| LA7570 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV,VTR IF Signal Processor (Super Split PLL VIF+SIF) |
| LA75710VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC NTSC Support TV and VCR VIF/SIF Signal Processing IC |
| LA7575 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Super-split, PLL-II Video and Sound IF Signal Processor |
| LA7576 | 制造商:Panasonic Industrial Company 功能描述:IC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。