DESCRIPTION
The WM8253 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 6MSPS.

FEATURES
• 16-bit ADC
• 6MSPS conversion rate
• Low power - 132mW typical
• 3.3V single supply or 3.3V/2.5V dual supply operation
• Single channel operation
• Correlated double sampling
• Programmable gain (8-bit resolution)
• Programmable offset adjust (8-bit resolution)
• Programmable clamp voltage
• 4-bit wide multiplexed data output format
• Internally generated voltage references
• 20-lead SSOP package
• Serial control interface

APPLICATIONS
• Flatbed and sheetfeed scanners
• USB compatible scanners
• Multi-function peripherals
• High-performance CCD sensor interface