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参数资料
| 型号： | LA75676VA |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封装： | 0.225 INCH, SSOP-24 |
| 文件页数： | 7/10页 |
| 文件大小： | 93K |
| 代理商： | LA75676VA |
LA75676VA
No.7868-6/10
V10, V11. Black noise threshold and clamp voltages [VBTH, VBCL]
1. Apply a DC voltage to the external AGC IF input (pin 17) and vary that voltage.
2. fp = 45.75MHz, 400Hz, 40% AM, 10mVrms (VIF input)
3. Vary the IF AGC (pin 17) voltage so that the noise canceller operates.
Measure VBTH and VBCL at test point A.
V12. Video signal-to-noise ratio [S/N]
1. Internal AGC
2. fp = 45.75MHz, CW, 10mVrms (VIF input)
3. Measure the noise voltage as an RMS level at test point A after passing through a 10kHz to 4MHz bandpass filter.
This is the noise voltage (N).
4. S/N = 20log
Video component (Vp-p)
Noise voltage (Vrms)
= 20log
1.12Vp-p
Noise voltage
= (dB)
V13. C/S beating [ICS]
1. Apply a DC voltage to the external AGC IF input (pin 17) and vary that voltage.
2. fp = 45.75MHz, CW ; 10mVrms
fc = 42.17MHz, CW ; 10mVrms - 10dB
fs = 41.25MHz, CW ; 10mVrms - 10dB
3. Vary the IF AGC (pin 17) voltage to adjust the output level at test point A to be 1.3Vp-p.
4. Measure the difference in level between the 3.58MHz and the 0.92MHz components at test point A.
VBCL
VBTH
Time
Video output
(V)
C/S beating
0.92MHz
3.58M 4.5M
Frequency (MHz)
Output
(dB)
相关PDF资料 |
PDF描述 |
|---|---|
| LA75676V | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75676V | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567BM | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA7567B | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| LA7567BM | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LA75676VA-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA75676V-S | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:VIF/SIF IF Signal-Processing Circuit for TV and VCR Products |
| LA7567B | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:LA7567B, LA7567BM |
| LA7567BM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:LA7567B, LA7567BM |
| LA7567EV | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support |
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