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| 型號： | LA7449 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP48 |
| 封裝： | SDIP-48 |
| 文件頁數： | 3/10頁 |
| 文件大小： | 427K |
| 代理商： | LA7449 |
LA7449, 7449M
No.5119–2/10
Specifications
Pin numbers are for the LA7449M
Maximum Ratings at Ta = 25C
C
Note : * When mounted on a 70mm by 65mm, 1.5mm thickness Bakelite board. The value for the DIP package is 1150mW.
Operating Conditions at Ta = 25C
Operating Characteristics at Ta = 25C, VCC=5.0V
Functions
All VHS format VCR signal processing functions.
Luminance
Chrominance
Video amplifier.
4.43 BPF
Half H killer
Feedback clamp
ACC amplifier.
BGP generator
Main LPF
ACC det.
Killer det.
R/P
YNR (AVNS)
Main converter
VCO
VCA
1.3M LPF
Phase shifter
Sync separator
VXO/XO
Sub converter
4.2V regulator
Side lock det.
5.06 BPF
3rd lock protector
Video AGC amplifier.
NL emphasis
Preamplifier.
Burst gate amplifier.
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 amplifier.
Drop out det.
Pre amplifier.
APC det.
FM AGC det.
NL de-emphasis
Burst de-emhasis (NTSC)
ID det.
Double limiter
Picture control
PB amplifier
DCC
FM demodulator
Y/C mix
Killer
Trick det.
PB
Sub LPF
NAP
DPLL
Double highpass noise canceller
PAL burst sequence
QV/QH/character insert
–Compensator
Main de-emphasis
Carrier balancer
DOC
Burst gate amplifier.
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Continued on next page.
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