參數(shù)資料
型號(hào)： 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(hào)處理LSI的錄像機(jī)
文件頁(yè)數(shù)： 6/13頁(yè)
文件大?。?/td> 157K
代理商： LA7386
Continued from preceding page.
Parameter
Symbol
ACC
R2
Conditions
min
–0.5
typ
–0.1
max
Unit
dB
REC ACC characteristics 2
V
IN
= standard color bar signal (1 Vp-p),
input –6 dB chroma signal level only, measure
T14A burst level, and calculate ratio with V
OR-14
V
IN
= standard color bar signal (1 Vp-p),
lower the chroma signal, and measure the input
burst level at the point where output at T14A
ceases, and calculate the ratio with the standard
input level
Use a spectrum analyzer to measure the output
level at T14A in the killer state described
previously; ratio with V
OR-14
Starting from the killer state described previously,
gradually raise the input chroma level and
measure the input burst level when output is
generated at T14A and calculate the ratio with the
standard input level
Measure the pin 16 DC voltage when a standard
color bar signal (1 Vp-p) is input ... V
O
Measure the frequency at T18A when V
0
is
applied to pin 16 from the external power
supply...f
1
Measure the frequency at T18A when V
O
+ 10
mV is applied to pin 16 ...f
2
f
2
– f
1
10
REC ACC killer input level
V
ACCK-ON
–30
–27
–24
dB
REC ACC killer output level
VO
ACCK
–60
–50
dB
Input level for REC ACC killer
return
V
ACCK–OFF
–24
–21
–18
dB
VXO control sensitivity
S
VXO
S
VXO
=
Hz/mV
3.3
4.9
7.5
Hz/mV
REC APC pull-in range 1
f
APC1
Input a 50% white signal overlapping with a
3.5795 MHz, 300 mVp-p continuous wave. After
confirming that there is output at T14A, increase
the frequency of the CW until the output at T14A
stops, and then gradually reduce the frequency
until output appears again at T14A; that CW
frequency is f
1
.
f
APC1
= f
1
– 3579545 (Hz)
In the same manner, reduce the frequency of the
CW until the output at T14A stops, and then
gradually increase the frequency until output
appears again at T14A; that CW frequency is f
2
.
f
APC2
= f
2
– 3579545 (Hz)
Input a standard color bar signal overlapping with
a 3.98 MHz, 300 mVp-p continuous wave, and
measure waveforms at T26 and T16.
350
440
Hz
REC APC pull-in range 2
f
APC2
–900
–350
Hz
BGP delay time for APC ACC
t
D
(N)
4.8
μs
BGP pulse width for APC ACC
t
W
(N)
2.5
μs
REC AFC pull-in range 1
f
AFC1
Input a string of pulses (negative polarity) at
286 mV, 15.7 kHz with a width of 5 μs. After
increasing the frequency of the pulse string until
the waveform at pin 20 is disrupted, then reduce
the frequency until the waveform at pin 20 is
normal again; that pulse string frequency is f
1
f
AFC1
= f
1
– 15.734 (kHz)
+1.0
+7.0
kHz
Continued on next page.
LA7386
No.5472 - 6/13
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA7390 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:VHS-format VCR Video Signal Processor
LA7390L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:VHS-format VCR Video Signal Processor(295.40 k)
LA7390N 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:VHS-format VCR Video Signal Processor
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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