STV2247H(2009) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STV2247H
(Rev.:2009)

I²C bus-controlled multistandard single chip TV processor

STMicroelectronics 

STV224X, STV228X, STV223X - 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

Test Conditions

Min. Typ. Max. Unit

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

PAL/SECAM matrix measured on R,

G outputs PAL DEMpattern

-0.40

-0.51

-0.62

-

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

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

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

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

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

-

du 4.10.7 Drive Adjustment (White Point Adjustment)

ro Symbol

Parameter

WPrange White Point Adjustment Range

Test Conditions

On RGB outputs

Min. Typ. Max. Unit

6

dB

te P 4.10.8 Cut-Off Adjustment (Black Point Adjustment)

le Symbol

Parameter

o COadjust Cut-off Adjustment Range

s COloop Cut-off Loop Range

b 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

- O 4.10.9 Cathode Current Input

) Symbol

t(s VLEAK

uc VCOFF

rod VSBEAM

P 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

te 4.10.10 Beam Current Limiter Input

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

o Symbol

Parameter

bs VTH1 Contrast Attenuation Starting

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

VTH2 Brightness Attenuation Starting

5.5

V

VTH3 Contrast Attenuation Ending

5.25

V

CTRbcl Contrast Attenuation at VTH3

14

dB

VTH4 Brightness Attenuation Ending

4.5

V

39/86

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