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參數(shù)資料
| 型號： | LA7615 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip NTSC Color TV IC |
| 中文描述： | 單片集成電路NTSC制式彩電 |
| 文件頁數(shù)： | 29/39頁 |
| 文件大小： | 206K |
| 代理商： | LA7615 |
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No. 5841-29/39
LA7615
Parameter
Symbol
Test point
Input signal
Test procedure
Bus condition
[Deflection Block]
Sync separator circuit sensitivity
Horizontal free-running
frequency deviation
Horizontal pull-in range
Horizontal output pulse width @0
Horizontal output pulse width @1
Horizontal output pulse width @2
Horizontal output pulse width @3
Horizontal output pulse
saturation voltage
Horizontal output pulse phase
Ssync
f
H
f
H
PULL
Hduty 0
Hduty 1
Hduty 2
Hduty 3
V
H
sat
HPH
CEN
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN: no
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
SYNC IN:
horizontal and
vertical
synchronizing
signal
Gradually decrease the level of the synchronizing
signal input to SYNC IN (pin 44) and measure the
level of the synchronizing signal when the
synchronization is unlocked.
Connect the pin 26 output (Hout) to a frequency
counter and measure the horizontal free-running
frequency.
Calculate the following formula.
f
H
= <measured value> – 15.743 kHz
Monitor the horizontal synchronizing signal input to
SYNC IN (pin 44) and the pin 26 output (Hout) with
an oscilloscope. Vary the frequency of the horizontal
synchronizing signal and measure the pull-in range.
Measure the low-level period in the pin 26 horizontal
pulse waveform.
Measure the low-level period in the pin 26 horizontal
pulse waveform.
Measure the low-level period in the pin 26 horizontal
pulse waveform.
Measure the low-level period in the pin 26 horizontal
pulse waveform.
Measure the voltage during low-level period in the
pin 26 horizontal pulse waveform.
Measure the delay time from the rise of the pin 26
horizontal output pulse waveform to the fall of the
SYNC IN horizontal synchronizing signal.
HDUTY: 00
HDUTY: 01
HDUTY: 11
44
26
44
26
26
26
26
26
26
44
HPHCEN
20 IRE
3.8V
A10075
Horizontal output
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA7620 | Color TV Video, Chroma, Deflection Circuit |
| LA7625 | Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | Color TV/Video,Chroma,Deflection Circuit |
| LA7640N | Chroma Circuit for SECAM-system Color Television Sets |
| LA7642N | SECAM Format Color TV Chrominance Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7620 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV Video, Chroma, Deflection Circuit |
| LA7621 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA7625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7626 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV/Video,Chroma,Deflection Circuit |
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