LA7449M データシートの表示（PDF） - SANYO -> Panasonic

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LA7449M

Video Signal Processing IC for VHS VCR Systems

SANYO -> Panasonic 

LA7449, 7449M

Functions

All VHS format VCR signal processing functions.

Luminance

Video amplifier.

Feedback clamp

Main LPF

R/P

YNR (AVNS)

VCA

Sync separator

4.2V regulator

REC

PB

Video AGC amplifier.

Video AGC det.

Pre LPF

Detail enhancer

1/2 fH carrier shift

FM AGC amplifier.

FM AGC det.

Double limiter

FM demodulator

Sub LPF

Double highpass noise canceller

QV/QH/character insert

Main de-emphasis

DOC

NL emphasis

Main emphasis

White/dark clip

FM modulator

Drop out det.

NL de-emphasis

Picture control

Y/C mix

Chrominance

4.43 BPF

ACC amplifier.

ACC det.

Main converter

1.3M LPF

VXO/XO

Side lock det.

3rd lock protector

Half H killer

BGP generator

Killer det.

VCO

Phase shifter

Sub converter

5.06 BPF

Preamplifier.

Burst emphasis (NTSC)

Killer

APC det.

AFC det.

Burst gate amplifier.

Pre amplifier.

Burst de-emhasis (NTSC)

PB amplifier

Killer

NAP

PAL burst sequence

–Compensator

Carrier balancer

Burst gate amplifier.

APC det.

ID det.

DCC

Trick det.

DPLL

Specifications

Pin numbers are for the LA7449M

Maximum Ratings at Ta = 25˚C

Parameter

Symbol

Conditions

Ratings

Unit

Maxumum supply voltage

Allowable power dissipation

VCC max

Pd max Ta≤65˚C *

7.0 V

1350* mW

Operating temperature

Storage temperature

Topr

Tstg

–10 to +65 ˚C

–40 to +150 ˚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 = 25˚C

Parameter

Recommended supply voltage

Operating supply voltage

Symbol

VCC

VCC op

Conditions

Ratings

Unit

5.0 V

4.8 to 5.2 V

Operating Characteristics at Ta = 25˚C, VCC=5.0V

Parameter

Symbol

Conditions

[Record mode Y system]

Record mode current drain

EE output level 1

AGC characteristics 1

AGC characteristics 2

AGC characteristics 3

AGC characteristics 4

Sync separator output level

Sync separator output pulse width

Sync separator output prerecord delay time

Sync separator threshold level

Pseudo-H insertion level

White insertion level

VCA detection voltage

Record YNR operation EP/LP

ICCR

VEE1

AGC1

AGC2

AGC3

AGC4

VSYR

PWSYR

∆TSYR

THSYR

∆HDR

∆WHR

VVCA

VR-YNR1

Input : 1.0Vp-p video signal

Input : 50Hz system 1.0Vp-p video signal

Input : 50Hz system 2.0Vp-p video signal

Input : 50Hz system 0.5Vp-p video signal

Input : 50Hz system wilth only SYNC increased 6dB

Input : 50Hz system wilth only SYNC decreased 6dB

The SYNC-OUT output pulse wave height

The SYNC-OUT output pulse width

The SYNC-OUT delay time

With 2.7V applied to T14A

With 1.3V applied to T14A

Input : 50Hz system standard color bar signal

Ratings

Unit

min typ max

100

1.95

2.05

1.90

555

370

3.9

4.0

0.9

–400

100

3.00

10

130 160 mA

2.05 2.15 Vp-p

2.15 2.25 Vp-p

2.00 2.10 Vp-p

615 695 mVp-p

410 450 mVp-p

4.1

4.3 V

4.3

4.6 µs

1.1

1.3 µs

–20 –15 dB

–300 –200 mV

250 400 mV

3.20 3.40 V

12

14 mVp-p

Continued on next page.

No.5119–2/10

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