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參數(shù)資料
| 型號： | LA7425 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP36 |
| 封裝： | SDIP-36 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 153K |
| 代理商： | LA7425 |
Functions
All VHS format VCR (NTSC) signal processing functions
Specifications
Maximum Ratings at Ta = 25°C
Operating Conditions at Ta = 25°C
Operating Characteristics at Ta = 25°C, VCC = 5.0 V
No. 5110-2/7
LA7425
Luminance
Chrominance
Video amp.
3.58 BPF
Half H killer
Feedback clamp
ACC amp.
BGP generator
Main LPF
ACC det.
Killer det.
R/P
YNR
Main converter
VCO
VCA
1.3 M LPF
Phase shifter
Sync separator
VXO/XO
Sub converter
4.1 V regulator
Side lock det.
4.21 BPF
3rd lock protecter
Video AGC amp.
NL emphasis
Pre amp.
Video AGC det.
Main emphasis
Burst emphasis
REC
Pre LPF
White/dark clip
Killer
Y/C comb filter
FM modulater
APC det.
Detail enhancer
Sync det.
AFC det.
1/2 fH carrier shift
Burst gate amp.
FM equalizer
QV/QH/character insert
Pre amp.
APC det.
629 chroma trap
Sub LPF
Burst de-emphasis
ID det.
FM AGC amp.
Main de-emphasis
PB amp.
DCC
PB
FM AGC det.
DOC
Killer
Trick det.
S-VHS det.
Drop out det.
CNR
DPLL
Double limiter
NL de-emphasis
Carrier balancer
FM demodulator
Picture control
Burst gate amp.
Double high-pass noise canceller
Y/C mix
Chroma noise canceller
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
7.0
V
Allowable power dissipation
Pd max
Ta
≤ 65°C
1070
mW
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–40 to +150
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
5.0
V
Operating supply voltage range
VCC op
4.8 to 5.5
V
Parameter
Symbol
Conditions
min
typ
max
Unit
[Record Mode Y System]
Record mode current drain
ICCR
Input: 1.0 Vp-p video signal
95
120
145
mA
EE output level
VEE
The T28 output level
2.04
2.15
2.26
Vp-p
AGC characteristics 1
AGC1
With the input level increased 6 dB
0
0.5
1.0
dB
AGC characteristics 2
AGC2
With the input level decreased 6 dB
–1.0
–0.3
0
dB
AGC characteristics 3
AGC3
Input: with only the sync level increased 6 dB,
540
600
660
mVp-p
measure the T28 sync level.
AGC characteristics 4
AGC4
Input: with only the sync level decreased 6 dB,
370
410
450
mVp-p
measure the T28 sync level.
Sync separator output level
VSYR
The T26 output pulse peak value
4.0
4.4
4.6
Vp-p
Sync separator output pulse width
PWSYR
The T26 output pulse width
4.1
4.4
4.7
s
Sync separator output leading
T
SYR
0.8
1.0
1.2
s
edge delay time
Sync separator threshold level
THSYR
–23
–19
dB
VCA detection voltage
VVCA
3.00
3.20
3.40
V
Continued on next page.
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