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參數(shù)資料
| 型號(hào)： | 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)： | 30/39頁 |
| 文件大小： | 206K |
| 代理商： | LA7615 |
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No. 5841-30/39
LA7615
Continued from preceding page.
Parameter
Symbol
Test point
Input signal
Test procedure
Bus condition
Horizontal position adjustment
range
Maximum horizontal position
adjustment variability
X-ray protection circuit operating
voltage
POR circuit operating voltage
[Vertical Screen Size Adjustment]
Vertical ramp output amplitude
@64
HPHrange
HPHstep
VX
RAY
V
POR
Vsize64
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
Measure the delay time from the rise of the pin 26
horizontal output pulse to the fall of SYNC IN
horizontal synchronizing signal with H
PHASE
set to
both 0 and 15 and calculate the difference with
respect to HPH
CEN
.
Measurement
Measure the delay time from the rise of the pin 26
horizontal output pulse to the fall of SYNC IN
horizontal synchronizing signal while varying H
PHASE
from 0 to 15, and measure the amount of variation at
each step. Find the step with the largest value of the
data.
Connect a DC voltage source to pin 28, and
gradually increase that voltage starting at 0 V.
Measure the pin 28 DC voltage at the point the pin
26 horizontal output pulse stops.
Replace the current source connected to pin 24 with
a DC voltage source, and gradually decrease the
voltage starting at 7.3 V. Measure the pin 24 DC
voltage at the point the pin 26 horizontal output pulse
stops.
Monitor the pin 19 vertical ramp output and measure
the voltages at the 22nd line and at the 262nd line.
Calculate the following formula.
Vsize64 = Vline262 – Vline22
H
PHASE
: 0000
H
PHASE
: 1111
H
PHASE
: 0000
to
H
PHASE
: 1111
26
44
26
44
26
28
26
19
20 IRE
3.8V
A10076
20 IRE
A10077
A10078
262nd line
24
Continued on next page.
Horizontal output
Measurement
Horizontal output
22nd line
Vertical ramp output
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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