KB2516 (Preliminary)

TRIPLE 8-BIT ANALOG-TO-DIGITAL CONVERTER

12

DESCRIPTION OF EACH BLOCK

AD2516X is equipped with a pre-amp that can control the gain and clamp level and can generate the pixel clock

synchronized to input HSYNC through the internal PLL. It then converts the RGB signal from analog -to- digital

by synchronizing to the generated clock. It has a maximum conversion speed of 180MHz and is capable of

supporting up to UXGA (1600

× 1200).

DAC

AMP1

Gain Control

8 bit

VIN

Cex

CLAMP

Brightness Control

8 bit

gm1

gm2

DAC

AMP2

VOUT1

VOUT (to ADC)

Figure 1. Pre-amp Block Diagram