LA76075 查看數據表（PDF） - SANYO -> Panasonic

零件编号

产品描述 (功能)

比赛名单

LA76075

NTSC Color Television Sets / Color TV Single-Chip Signal Processor

SANYO -> Panasonic 

LA76075

Continued from preceding page.

Measurement

Item

Symbol

Point

Demodulator angle B-Y/

30

ANGBR

R-Y

28

Demodulator angle G-Y/

ANGBG

29

B-Y

Killer operation point

KILL

30

Chroma VCO free run

frequency

CVCOF

42

Chroma pull-in range (+) PULIN+

30

Chroma pull-in range (–) PULIN–

30

30

Auto Flesh characteristic

73°

AF073

28

30

Auto Flesh characteristic

118°

AF118

28

30

Auto Flesh characteristic

163°

AF163

28

Overload characteristic 1 OVL1

28

Overload characteristic 2 OVL2

28

Overload characteristic 3 OVL3

28

fsc output amplitude

Vfsc

42

(Vp-p)

Input

Signal

C-1

C-1

C-3

CIN

No signal

C-1

C-1

C-4

C-4

C-4

C-5

C-5

C-5

C-1

Measurement Procedure

Bus Condition

Measure the BOUT and ROUT output levels, calculate

the B-Y and R-Y angles, and substitute in the following

formula.

ANGBR = R-Y angle - B-Y angle

Measure the GOUT output level, calculate the B-Y and

R-Y angles, and substitute in the following formula.

ANGBG = G-Y angle - B-Y angle

Gradually lower the input signal level and measure the

input level at which the output level falls below 150

mVp-p

Measure the oscillation frequency f and substitute in

the following formula.

CVCOF = f – 357945 (Hz)

Gradually lower the input signal subcarrier frequency

from 3.57545 MHz + 1000 Hz and measure the

frequency at which the output waveform locks.

Gradually raise the input signal subcarrier frequency

from 3.57545 MHz - 1000 Hz and measure the

frequency at which the output waveform locks.

Set AutoFlesh to “0,” measure the levels at the 73°

portions of the BOUT and ROUT output waveforms,

and calculate the angle AF073A. Set AutoFlesh to “1,” AutoFlesh : 0

repeat the procedure to determine AF073B, and AutoFlesh : 1

substitute in the following formula.

AF073 = AF073B – AF073A

Set AutoFlesh to “0,” measure the levels at the 118°

portions of the BOUT and ROUT output waveforms,

and calculate the angle AF118A. Set AutoFlesh to “1,” AutoFlesh : 0

repeat the procedure to determine AF118B, and AutoFlesh : 1

substitute in the following formula.

AF118 = AF118B – AF118A

Set AutoFlesh to “0,” measure the levels at the 163°

portions of the BOUT and ROUT output waveforms,

and calculate the angle AF163A. Set AutoFlesh to “1,” AutoFlesh : 0

repeat the procedure to determine AF163B, and AutoFlesh : 1

substitute in the following formula.

AF163 = AF163B – AF163A

Measure V1, the output amplitude (Vp-p) for an input

signal burst level of 40 IRE and a chroma level of 8

IRE, and V2, the same for a burst level of 40 IRE and

a chroma level of 40 IRE, and substitute in the

OverLoad : 1

following formula.

OVL1 = V2/V1

Measure V3, the output amplitude (Vp-p) for an input

signal burst level of 40 IRE and a chroma level of 80

IRE, and substitute in the following formula.

OverLoad : 1

OVL2 = V3/V1

Measure V4, the output amplitude (Vp-p) for an input

signal burst level of 20 IRE and a chroma level of 80

IRE, and substitute in the following formula.

OverLoad : 1

OVL3 = V4/V1

Measure the output amplitude (V{p-p}) of the 3.58-MHz

CW output at pin 42 (FSC OUT).

Continued on next page.

No. 5845-20/35

Share Link: