GS4881 Просмотр технического описания (PDF) - Gennum -> Semtech

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производитель

GS4881

Monolithic Video Sync Separators

Gennum -> Semtech 

VIDEO

INPUT

-

(Pin 2)

+

11μ

85μ

-

V SLICE +

-

V CLAMP +

C SYNC

VCC

(Pin 8)

R_SET

(Pin 6)

VOLTAGE

REGULATOR

1.2V

TIMING

CURRENTS

Figure 4-6: GS4881 Block Diagram

VIDEO

INPUT

-

(Pin 2)

+

11μ

85μ

-

V1

+

-

V2

+

C SYNC

VCC

(Pin 8)

R_SET

(Pin 6)

VOLTAGE

REGULATOR

1.2V

TIMING

CURRENTS

Figure 4-7: GS4981 Block Diagram

HORIZONTAL

WINDOWING

CIRCUIT

NOSYNC

B PEN

VERTICAL

DETECTOR

BACK PORCH

DETECTOR

COMPOSITE

SYNC OUTPUT

(Pin 1)

DQ

GQ

DQ

CLK Q

ODD / EVEN

OUTPUT

(Pin 7)

DQ

CLK Q

VERTICAL SYNC

OUTPUT

(PIN 3)

BACK PORCH

OUTPUT

(Pin 5)

WINDOWING

CIRCUIT

NOSYNC

B PEN

VERTICAL

DETECTOR

BACK PORCH

DETECTOR

COMPOSITE

SYNC OUTPUT

(Pin 1)

10k

HORIZONTAL

OUTPUT

(Pin 7)

DQ

CLK Q

VERTICAL SYNC

OUTPUT

(PIN 3)

BACK PORCH

OUTPUT

(Pin 5)

GS1881, GS4881, GS4981 Monolithic Video Sync

Separators

Data Sheet

6926 - 5

November 2009

18 of 29

Proprietary & Confidential

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