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參數資料
| 型號： | LA75693M |
| 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： | 7/8頁 |
| 文件大小： | 199K |
| 代理商： | LA75693M |
LA75693M
No.0250-7/9
V14. Frequency characteristics [fc]
(1) Apply DC voltage to the external AGC IF AGC (pin 17) and vary it.
(2) SG1:45.75MHz continuous wave 10mVrms
SG2:45.65MHz to 39.75MHz continuous wave 2mVrms
Add the SG1 and SG2 signals using a T pat and adjust each SG signal level so that the above-mentioned levels are
reached and input the added signals to the VIF IN.
(3) First set the SG2 frequency to 45.65MHz, and then adjust the IF AGC voltage (V17) so that the output level at test
point A becomes 0.5Vp-p. ……V1
(4) Set the SG2 frequency to 39.75MHz and measure the output level. ……V2
(5) Calculate as follows:
)
dB
(
1
V
2
V
log
20
fc
=
V15. V16. Differential gain, differential phase [DG, DP]
(1) Internal AGC
(2) fp = 45.75MHz APL50% 87.5% modulation video signal Vi = 10mVrms
(3) Measure the DG and DP at test point A
V17. No-signal AFT voltage [V13]
(1) Internal AGC
(2) Measure the DC voltage at the AFT output (B).
V18.V19.V20 Maximum minimum AFT output voltage, AFT detection sensitivity [V13H, V13L, Sf]
(1) Internal AGC
(2) fp = 45.75MHz
±1.5MHz Sweep = 10mVrms (VIF input)
(3) Maximum voltage …… V13H, minimum voltage …… V13L
(4) Measure the frequency deviation at which the voltage at test point B changes from V1 to V2 ……
f
kHz
/
mV
)
kHz
(
f
)
mV
(
2000
Sf
=
V13H
V13L
V1;3.5V
V2;1.5V
IF frequency (MHz)
AFT output
(V)
f
相關PDF資料 |
PDF描述 |
|---|---|
| LA75693VA | FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75694M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75694M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75695VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75695VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LA75694M | 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 for Hi-Fi) |
| 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 |
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