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參數資料
| 型號： | 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 |
| 文件頁數： | 7/10頁 |
| 文件大小： | 226K |
| 代理商： | LA75694M |
LA75694M
No.A0251-6/10
V10.V11. Black noise threshold level and clamp voltage [VBTH, VBCL]
(1) Apply DC voltage to the external AGC, IF AGC (pin 17) and adjust the voltage.
(2) fp = 45.75MHz 400Hz 40% AM 10mVrms (VIF input)
(3) Adjust the IF AGC (pin 17) voltage to operate the noise canceller.
Measure the VBTH, VBCL at test point A.
V12. Video S/N [S/N]
(1) Internal AGC
(2) fp = 45.75MHz CW = 10mVrms (VIF input)
(3) Measure the noise voltage at test point A in RMS volts through a 10kHz to 4MHz band-pass filter.
Noise voltage (N)
(4) S/N = 20log
= 20log
(dB)
V13. C/S beat [IC-S]
(1) Apply DC voltage to the external AGC IF AGC (pin 17) and adjust the voltage.
(2) fp = 45.75MHz CW; 10mVrms
fc = 42.17MHz CW; 10mVrms – 10dB
fs = 41.25MHz CW; 10mVrms – 10dB
(3) Adjust the IF AGC (pin 17) voltage so that the output level at test point A becomes 0.72Vp-p.
(4) Measure the difference between the levels for 3.58MHz and 0.92MHz components at test point A.
Video portion (Vp-p)
Noise voltage (Vrms)
1.12Vp-p
Noise voltage (Vrms)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
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