- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358737 > LA7642N (Sanyo Electric Co.,Ltd.) SECAM Format Color TV Chrominance Circuit PDF資料下載
參數(shù)資料
| 型號： | LA7642N |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | SECAM Format Color TV Chrominance Circuit |
| 中文描述： | SECAM格式彩色電視色度電路 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 64K |
| 代理商： | LA7642N |
No. 5693-2/6
LA7642N
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Referenced to 4.286 MHz. For reference only.
EQU = off.
Input a 20 mV p-p, f = 4.286 MHz CW signal
to pin 14 and, measure the pin 16 output
(f = 4.286 MHz). Next, input a CW of
20 mV p-p, f = 4.086 MHz and measure the
pin 16 output (f = 4.086 MHz) and calculate
the frequency characteristics.
Bell filter frequency characteristics
4.086 MHz
BEL4.086
–9
–6
–3
dB
Referenced to 4.286 MHz. For reference only.
EQU = off.
Input a 20 mV p-p, f = 4.286 MHz CW signal
to pin 14 and, measure the pin 16 output
(f = 4.286 MHz). Next, input a CW of
20 mV p-p, f = 4.486 MHz and measure the
pin 16 output (f = 4.486 MHz) and calculate
the frequency characteristics.
Bell filter frequency characteristics
4.486 MHz
BEL4.486
–5
–2
–0.5
dB
Referenced to 4.286 MHz. For reference only.
EQU = on.
Input a 20 mV p-p, f = 4.286 MHz CW signal
to pin 14 and, measure the pin 16 output
(f = 4.286 MHz). Next, input a CW of
20 mV p-p, f = 4.086 MHz and measure the
pin 16 output (f = 4.086 MHz) and calculate
the frequency characteristics.
EQU frequency characteristics
4.086 MHz
EQU4.086
–10.5
–7.5
–4.5
dB
Referenced to 4.286 MHz. For reference only.
EQU = on.
Input a 20 mV p-p, f = 4.286 MHz CW signal
to pin 14 and measure the pin 16 output
(f = 4.286 MHz). Next, input a CW of
20 mV p-p, f = 4.486 MHz and measure the
pin 16 output (f = 4.486 MHz) and calculate
the frequency characteristics.
EQU frequency characteristics
4.486 MHz
EQU4.486
–3
0
+3
dB
Referenced to 4.35 MHz. For reference only.
EQU = off.
Input a 20 mV p-p CW signal to pin 14 and
modify the frequency of that signal. Measure
the deviation from 4.35 MHz of the frequency
(the center frequency) for which the pin 16
output is maximized.
Bell filter frequency deviation from
center frequency
BELF0
–50
0
+50
kHz
Referenced to 4.35 MHz. For reference only.
EQU = off.
Measure the gain at the BELF0 ±500 kHz,
and calculate the difference.
Bell filter gain difference at f0 ±500 kHz
BELdG
–1
0
+1
dB
[Chrominance Block]
Let 0 dB = 200 mV p-p. Input a color bar
signal to pin 14 and gradually lower the input
signal level. Measure the input level at the
point the pin 13 DC voltage falls below 1/2
*
V
CC
.
The pin 7 B-Y amplitude for a color bar signal.
Let 0 dB = 200 mV p-p. Input a color bar
signal (0 dB) to pin 14, and measure the B-Y
amplitude at pin 7.
Killer operating point
KILL
–42
–36
–33
dB
B-Y output amplitude
VBY
0.60
0.75
0.90
Vp-p
The pin 6 R-Y amplitude for a color bar signal.
Let 0 dB = 200 mV p-p. Input a color bar
signal (0 dB) to pin 14, and measure the R-Y
amplitude at pin 6.
R-Y output amplitude
VRY
0.74
0.92
1.10
Vp-p
VRY/VBY. Calculate the ratio of the values
measured above.
RATRB = VRY/VBY
R-Y/B-Y output ratio
RATRB
1.1
1.23
1.35
Input a color bar signal (0 dB) to pin 14. In the
pin 7 (B-Y) output waveform measure the
amplitude of the blue (+230 kHz) and yellow
(–230 kHz) components (A) and measure the
amplitude of the blue green (+78 kHz) and
red (–78 kHz) components (B). Calculate the
value of LINBY from the following formula.
LINBY = (A/B)
×
(156/460)
×
100 (%)
B-Y linearity
LINBY
85
100
115
%
Continued from preceding page.
Continued on next page.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA7655N | 1-Chip IC for Color TV Signal Processing |
| LA76600M | Monolithic Linear IC Video Signal Y/C Separator IC |
| LA7668N | Video Signal Auto-White Processing IC |
| LA7668 | Video Signal Auto-White Processing IC |
| LA7670 | PLL type video detector for the high picture & sound quality |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA7655N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1-Chip IC for Color TV Signal Processing |
| LA76600M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Video Signal Y/C Separator IC |
| LA7668 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video Signal Auto-White Processing IC |
| LA7668N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video Signal Auto-White Processing IC |
| LA7670 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL type video detector for the high picture & sound quality |
發(fā)布緊急采購，3分鐘左右您將得到回復。