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參數(shù)資料
| 型號： | LA76075 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | NTSC Color Television Sets |
| 中文描述： | NTSC制式彩電 |
| 文件頁數(shù)： | 26/35頁 |
| 文件大?。?/td> | 712K |
| 代理商： | LA76075 |
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Deflection Block Input Signals and Measurement Conditions
If nothing is specified for the items, the following conditions apply.
1. VIF and SIF blocks: No signals
2. C input: No signal
3. Y input: Supply a composite horizontal and vertical synchronization signal (40 IRE). Set other timing parameters to
conform with the FCC broadcast standard.
Note: Make sure that there are no burst or chroma signals under the pedestal level.
4. Bus control conditions: Use the initial values.
5. Use a delay of 9 μs from the rising edge in the horizontal output (pin 23) to the rising edge in the flyback pulse pin
(pin 24).
6. Connect pin 32, the vertical size compensation circuit input pin to V
CC
(7.6 V).
7. Connect pin 25 (X RAY), the X-ray protection circuit input pin to ground.
No. 5845-26/35
LA76075
Item
Symbol
Measurement
Point
Input
Signal
Measurement Procedure
Bus Condition
[Deflection block]
Synchronization
separation sensitivity
Gradually lower the pin 38 (YIN) synchronization
signal level and measure the level at which the device
loses synchronization.
Ssync
38
YIN:
Composite
horizontal and
vertical
synchronization
signal
Horizontal free run
frequency deviation
Connect a frequency counter to the pin 23 (HORIZ
OUT) output, measure the horizontal free run
frequency, and substitute in the following formula.
fH = the measured frequency – 15.734 kHz
fH
23
YIN: No signal
Horizontal pull-in range
Connect the pin 38 (YIN) synchronization signal input
and pin 23 (HORIZ OUT) output to an oscilloscope,
vary the horizontal synchronization signal frequency,
and measure the pull-in range.
fH PULL
38
YIN:
Composite
horizontal and
vertical
synchronization
signal
YIN:
Composite
horizontal and
vertical
synchronization
signal
YIN:
Composite
horizontal and
vertical
synchronization
signal
YIN:
Composite
horizontal and
vertical
synchronization
signal
Horizontal output pulse
width @0
Measure the width of the “Low” level portion of the pin
23 (HORIZ OUT) horizontal output pulses.
HDUTY : 00
HDUTY : 01
Hduty 0
23
Horizontal output pulse
width @1
Measure the width of the “Low” level portion of the pin
23 (HORIZ OUT) horizontal output pulses.
Hduty 1
23
Horizontal output pulse
saturation voltage
Measure the voltage of the “Low” level portion of the
pin 23 (HORIZ OUT) horizontal output pulses.
V Hsat
23
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA7615 | Single-Chip NTSC Color TV IC |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7612A | 制造商:SANYO Semiconductor Co Ltd 功能描述: |
| LA7615 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip NTSC Color TV IC |
| 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 |
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