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參數(shù)資料
| 型號： | LA7386 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | NTSC Video Signal Processing LSI for VCRs |
| 中文描述： | NTSC制式視頻信號處理LSI的錄像機(jī) |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 157K |
| 代理商： | LA7386 |
Continued from preceding page.
Parameter
Symbol
f
AFC2
Conditions
min
typ
–6.3
max
–1.0
Unit
kHz
REC AFC pull-in range 2
In the same manner, after reducing the frequency
of the pulse string until the waveform at pin 20 is
disrupted, then increase the frequency until the
waveform at pin 20 is normal again; that pulse
string frequency is f
2
f
AFC2
= f
2
– 15.734 (kHz)
[PB Mode Chroma]
PB chroma video output level
Vop-28
In PB, SP mode, input a continuous wave from
T14A a chroma signal (SP mode, burst 50 mVp-p)
that underwent low-band conversion from a
chroma noise test signal. Input a 50% white
signal from T3A and measure the T28A burst
level
Measure the T21 burst level under the same
conditions as for Vop-28
Input the input chroma level at +6 dB under the
same conditions as for Vop-28 and measure the
T21 burst level, and calculate the ratio with
Vop-21
Input the input chroma level at –6 dB under the
same conditions as for Vop-28 and measure the
T21 burst level, and calculate the ratio with
Vop-21
Lower the input chroma level under the same
conditions as for Vop-28 and measure the input
burst level at the point where T21 chroma output
ceases. (Calculate ratio with standard input of
50 mVp-p)
Use a spectrum analyzer to measure the T28
chroma output level in the killer state described
previously. Calculate ratio with Vop-28.
Monitor T28A with a spectrum analyzer under the
same conditions as for Vop-28 and calculate the
ratio between the 3.58 MHz component and the
4.21 MHz carrier leak component.
From T14A, input a 629 kHz 50 mVp-p
continuous wave; from T3A, input a 50% white
signal, and calculate the ratio between the output
level during the T21 burst interval and the output
level during other intervals
In PB mode, measure the T18 output level with
an FET probe
In PB mode, measure the frequency at T18...f
f
XO
= f – 3579545 (Hz)
In PB mode, with S20: 3 and S19: off, input a
4 MHz 300 mVp-p continuous wave from T33A,
input a 50% white signal from T3A, and measure
the wave peak at T19A
210
260
310
mVp-p
PB chroma pin 21 output level
Vop-21
170
200
230
mVp-p
PB ACC characteristics 1
ACC
P1
+0.5
+0.8
dB
PB ACC characteristics 2
ACC
P2
–0.5
–0.2
dB
PB killer input level
V
ACK-P
–55
–40
dB
PB killer chroma output level
V
OACK-P
–44
–40
dB
PB main converter carrier leak
C
LP
–40
–33
dB
Burst de-emphasis amount
G
BD
–4.35
–4.6
–4.85
dB
PB XO output level
V
XO-P
480
610
750
mVp-p
PB XO oscillation frequency
variation
SLD detection current 1
f
XO
–7
0
+7
Hz
I
SLD1
I
SLD1
= VOS1/1 k
110
160
210
μA
Continued on next page.
LA7386
No.5472 - 7/13
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相關(guān)代理商/技術(shù)參數(shù) |
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| LA7391 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA7391A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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