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