STV2236 datasheet(40/86 Pages) STMICROELECTRONICS

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STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS

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4.10.11 Automatic RGB Peak Regulation (APR) / RGB Peak Limitation

See Figure 16 on page 42.

Note 10: At maximum contrast, APR and RGB peak limitation have the same characteristics. The APR regulation level

is tracked on contrast. The RGB peak limitation level is not tracked on contrast.

BRIGbcl

Brightness Attenuation at VTH4

100

Clp

High Clamping Voltage

6.5

SAF-thr

Safety Threshold

0.8

1.2

SAF-hold

Supply Hold Voltage

Referred to VCC1

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

APR/RGB

Peak

Maximum Output Level on RGB

outputs when APR/RGB Peak Limi-

tation ON

WR10 d0 = 1

Contrast Max., drive Max., no load

APR threshold Min. (50IRE)

APR threshold 70IRE

APR threshold Max. (100IRE) (see

Note 10)

2.14

3.0

4.28

iAPR-D

Discharging Current

5.5

µA

iAPR-C

Charging Current

5.25

GAPRMAX APR max gain

APR ON = WR10 d0 = 1

RGB output amplitude with APR ON

versus RGB output amplitude with

APR OFF

+2.5

GAPRMIN

APR min gain

APR ON = WR10 d0 = 1

RGB output amplitude with APR ON

versus RGB output amplitude with

APR OFF

-3.0

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

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