STV2247H View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STV2247H

I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR

STMicroelectronics 

STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS

4.10.5 Brightness Control

Symbol

Bright

Blacknom

Parameter

Brightness Control Range referred

to B/W amplitude on RGB outputs

Nominal Black Level at RGB out-

puts. Difference between black lev-

el VBLACK and inserted cut-off pulse

level VCO: VBLACK - VCO

Test Conditions

At Max. Contrast, APR OFF

BS mode, Max. Contrast.

(VBLACK - VCO)/V_BW

V_BW: black to white amplitude at

RGB outputs.

Min. Typ. Max. Unit

50 60 70

%

-12

%

4.10.6 RGB Matrix

Symbol

Parameter

G/R (G-Y)/(R-Y)

G/B (G-Y)/(B-Y)

R/Bntsc (R-Y)/(B-Y)

G/Rntsc (G-Y)/(R-Y)

G/Bntsc (G-Y)/(B-Y)

Test Conditions

Min. Typ. Max. Unit

PAL/SECAM matrix measured on R,

G outputs PAL DEMpattern

-0.40

-0.51

-0.62

-

PAL/SECAM matrix measured on G,

B outputs PAL DEMpattern

-0.15

-0.19

-0.23

-

NTSC mode, 104° matrix input signal:

U = V measured on R, B outputs

0.9

-

NTSC mode, 104° matrix

-0.29

-

NTSC mode, 104° matrix

-0.22

-

4.10.7 Drive Adjustment (White Point Adjustment)

Symbol

Parameter

WPrange White Point Adjustment Range

Test Conditions

On RGB outputs

Min. Typ. Max. Unit

6

dB

4.10.8 Cut-Off Adjustment (Black Point Adjustment)

Symbol

Parameter

COadjust Cut-off Adjustment Range

COloop Cut-off Loop Range

COlevel Inserted Cut-off Level

Test Conditions

On Red and green outputs at Typ.

drive, no load

On RGB outputs

Min. Typ. Max. Unit

420

mV

2 2.5

V

1.5 2.5 3.5

V

4.10.9 Cathode Current Input

Symbol

VLEAK

VCOFF

VSBEAM

ISOURCE

Parameter

Leakage Current Reference Volt-

age

Cut-off Current Reference Voltage

referred to leakage current refer-

ence VLEAK

Start Beam Current Detection Ref-

erence Voltage

Source Current

Test Conditions

4.10.10 Beam Current Limiter Input

See Figure 14 on page 42 and Figure 15 on page 42.

Symbol

VTH1

VTH2

VTH3

CTRbcl

VTH4

Parameter

Contrast Attenuation Starting

Brightness Attenuation Starting

Contrast Attenuation Ending

Contrast Attenuation at VTH3

Brightness Attenuation Ending

Test Conditions

Min. Typ. Max. Unit

3.75 4

V

210 250 290 mV

4.1 4.3

V

150

µA

Min. Typ. Max. Unit

5.75

V

5.5

V

5.25

V

14

dB

4.5

V

39/86

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