DESCRIPTION

The WM8191 is a 14-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

• 14-bit ADC

• No missing codes guaranteed

• 6MSPS conversion rate

• Low power – 250mW typical

• 5V single supply or 5V/3.3V dual supply operation

• Single or 3 channel operation

• Correlated double sampling

• Programmable gain (8-bit resolution)

• Programmable offset adjust (8-bit resolution)

• Programmable clamp voltage

• 14-bit parallel or 8/7/4-bit wide multiplexed data output formats

• Internally generated voltage references

• 48-pin TQFP package

• Serial or parallel control interface

APPLICATIONS

• Flatbed and sheetfeed scanners

• USB compatible scanners

• Multi-function peripherals

• High-performance CCD sensor interface