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LA7437 Datasheet(PDF) 2 Page - Sanyo Semicon Device

Part No. LA7437
Description  Video Signal Processing IC for VHS VCR Systems
Download  8 Pages
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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LA7437 Datasheet(HTML) 2 Page - Sanyo Semicon Device

   
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No. 5473-2/8
LA7437, 7437A
Functions
All VHS format VCR signal processing functions
Specifications
Maximum Ratings at Ta = 25°C
Note: * When mounted on a 70 mm by 65 mm, 1.5 mm thickness Bakelite board. The value for the DIP package is 1150 mW.
Operating Conditions at Ta = 25°C
Operating Characteristics at Ta = 25°C, VCC = 5.0 V
Luminance
Chrominance
Video amp.
4.43 BPF
Half H killer
Feed back clamp
ACC amp.
BGP generator
Main LPF
ACC det.
Killer det.
R/P
YNR (AVNS)
Main converter
VCO
VCA
1.3 M LPF
Phase shifter
Sync separator
VXO/XO
Sub converter
4.2 V regulator
Side lock det.
5.06 BPF
3rd lock protector
Video AGC amp.
NL emphasis
Pre amp.
Burst gate amp.
Video AGC det.
Main emphasis
Burst emphasis (NTSC)
REC
Pre LPF
White/dark clip
Killer
Detail enhancer
FM modulator
APC det.
1/2 fH carrier shift
AFC det.
FM AGC amp.
Drop out det.
Pre amp.
APC det.
FM AGC det.
NL de-emphasis
Burst de-emphasis (NTSC)
ID det.
Double limiter
Picture control
PB amp.
DCC
FM demodulator
Y/C mix
Killer
Trick det.
PB
Sub LPF
NAP
DPLL
Double high pass noise canceller
PAL burst sequence
QV/QH/character insert
– Compensator
Main de-emphasis
Carrier balancer
DOC
Burst gate amp.
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
7.0
V
Allowable power dissipation
Pd max
Ta
≤ 65°C*
1350*
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
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
100
130
160
mA
EE output level 1
VEE1
Input: 50 Hz system 1.0 Vp-p video signal
2.0
2.1
2.2
Vp-p
AGC characteristics 1
AGC1
Input: 50 Hz system 2.0 Vp-p video signal
2.11
2.21
2.31
Vp-p
AGC characteristics 2
AGC2
Input: 50 Hz system 0.5 Vp-p video signal
1.99
2.09
2.19
Vp-p
AGC characteristics 3
AGC3
Input: 50 Hz system with only SYNC increased 6 dB
590
660
730
mVp-p
AGC characteristics 4
AGC4
Input: 50 Hz system with only SYNC decreased 6 dB
340
380
420
mVp-p
Sync separator output level
VSYR
The SYNC-OUT output pulse wave height
3.9
4.2
4.5
V
Sync separator output pulse width
PWSYR
The SYNC-OUT output pulse width
3.9
4.2
4.6
µs
Sync separator output
∆TSYR
The SYNC-OUT delay time
0.9
1.1
1.3
µs
prerecord delay time
Sync separator threshold level
THSYR
–20
–15
dB
Continued on next page.


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