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전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크

LA75694M 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA75694M Datasheet PDF : 10 Pages
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LA75694M
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)
Video portion (Vp-p)
1.12Vp-p
(4) S/N = 20log Noise voltage (Vrms) = 20log Noise voltage (Vrms) (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.
No.A0251-6/10

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