ADV473KP80 データシートの表示（PDF） - Analog Devices

部品番号

コンポーネント説明

メーカー

ADV473KP80

CMOS 135 MHz True-Color Graphics Triple 8-Bit Video RAM-DAC

Analog Devices 

ADV473

MA

V

26.67 1.000

WHITE LEVEL

92.5 IRE

9.05 0.340

7.62 0.286

7.5 IRE

0.00 0.000

40 IRE

NOTE:

75Ω DOUBLY TERMINATED LOAD, SETUP = 7.5 IRE, VREF = 1.235 V, RSET = 140Ω

RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS.

BLACK LEVEL

BLANK LEVEL

SYNC LEVEL

Figure 5. Composite Video Output Waveform (Setup = 7.5 IRE)

Table VI. Video Output Truth Table (Setup = 7.5 IRE)

MA

V

25.24 0.950

Description

IOUT

(mA)

DAC

SYNC BLANK Input Data

WHITE

26.67

1

1

DATA

Data+9.05 1

1

DATA-SYNC Data+1.44 0

1

BLACK

9.05

1

1

BLACK-SYNC 1.44

0

1

BLANK

7.62

1

0

SYNC

0

0

0

FFH

Data

Data

00H

00H

XXH

XXH

NOTE

Typical with full-scale IOR, IOG, IOB = 26.67 mA, SETUP = 7.5 IRE,

VREF = 1.235 V, RSET = 140 Ω. External voltage reference adjusted for

26.67 mA full-scale output.

WHITE LEVEL

100 IRE

7.62 0.286

43 IRE

0.00 0.000

NOTE:

75Ω DOUBLY TERMINATED LOAD, SETUP = 0 IRE, VREF = 1.235 V, RSET = 140Ω

RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS.

BLACK/BLANK

LEVEL

SYNC LEVEL

Figure 6. Composite Video Output Waveform (Setup = 0 IRE)

Table VII. Video Output Truth Table (SETUP = 0 IRE)

Description

IOUT

(mA)

DAC

SYNC BLANK Input Data

WHITE

25.24

1

1

DATA

Data+7.62 1

1

DATA-SYNC Data

0

1

BLACK

7.62

1

1

BLACK-SYNC 0

0

1

BLANK

7.62

1

0

SYNC

0

0

0

FFH

Data

Data

00H

00H

XXH

XXH

NOTE

Typical with full-scale IOR, IOG, IOB = 25.24 mA, SETUP = 0 IRE,

VREF = 1.235 V, RSET = 140 Ω. External voltage reference adjusted for

26.67 mA full-scale output.

–10–

REV. A

Share Link: