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NJW1301

SIGNAL PROCESSOR FOR COLOR TFT FOR NTSC

Japan Radio Corporation  

NJW1301

sELECTRICAL CHARACTERICS

(Ta=25°C,VCC1=5V,VCC3=7V,VDD=5V,VEE1=-5V,TP2=TP5=TP27=TP40=2.5V,TP13=2.9V,TP15=3.1V,

TP34=3.0V,TP35=1V,TP26=TP42=5V,TP50=5V,TP58=4.7V,SW14=SW25=SW26=SW50=L)

PARAMETERS

SYMBOL

TEST CONDITIONS

MIN. TYP. MAX UNIT

SG6(3.579545MHz,150mVpp)

applied to TP14, SG2 applied to

ΘT1

TP51,SG10 applied to TP41.

30

45

-

Define the phase causing the

maximum amplitude at TP13=1.6V

TINT Variable Range

on TP46 as Θ1. Define the each

deg

phase causing the maximum

ΘT2

amplitude at TP13=2.8V,4.0V on

TP46 as Θ2 and Θ3.

-

-45 -30

ΘT1=Θ1-Θ2

ΘT2=Θ3-Θ2

Decrease the voltage on TP13

NTSC /PAL

Switching Voltage

VTHNP

until the signal on TP64 frequency

at 50Hz.

0.4

0.7

1.0 V

Measure voltage onTP13.

TP41=5V ,SG6(3.58MHz,150mVp

Color Killer

Operating Input Level

p) applied to TP14,SG2 applied tp

VKIN

TP51,decause the input amplitude -

until the killer is turned on , and

-42 -37 dB

measure the input attenuation.

SW26=H,TP26=H.SG10 applied to

TP41,SG1(0.7Vpp) applied to

Output Level Voltage

Difference among RGB

∆VBRGB

TP29,31,33, SG2 applied to SG2.

Then define the non-inverting side

of TP44, TP46, TP48 as VRB,

-150

0

150 mV

VGB, and VBB, the invert side of

them as VRBI, VGBI, and VBBI.

∆VBRGB=VRB-VGB,VBB-VGB

=VRBl-VGBl,VBBl-VGBl

INT-EXT

Output Black Level

Voltage Difference

SG4 applied to SW26=L,TP19,

define the non-inverting side of

TP44,TP46,TP48 as VRB(Y),

VGB(Y), and VBB(Y), the invert

∆VBIE side of VRBI(Y), VGBI(Y), and

-150

0

150 mV

VBBI(Y).

VBlE=VRB-VRBl(Y),VGB-VGBl,

=VBB-VBB(Y),VRBl-VRBl(Y),

=VGBl-VGBl(Y),VBBl-VBBl(Y)

Ver.02

-6-

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