DESCRIPTION
   The WM8255 is a 16-bit analogue front end/digitiser IC which processes and digitises the analogue output signals from CCD sensors or Contact Image Sensors (CIS) at pixel sample rates of up to 12 MSPS.

FEATURES
• 16-bit ADC
• 12 MSPS conversion rate
• Low power – 250 mW typical
• 5.75V and 3.3V supply operation
• Single channel operation
• Correlated double sampling
• Programmable gain (8-bit resolution)
• Programmable offset adjust (8-bit resolution)
• Programmable clamp voltage
• RGB LED current drive using current and PWM
• 2-bit or 4-bit wide multiplexed data output format
• Internally generated voltage references
• 28-lead QFN package
• 3 wire serial control interface

APPLICATIONS
• Flatbed and sheetfeed scanners
• USB compatible scanners
• Multi-function peripherals