DESCRIPTION

The WM8148 is a 12-bit, 12MSPS analogue front end/digitiser IC, which interfaces to colour or monochrome linear array CCDs or contact image sensors (CIS). The device includes all the signal conditioning circuitry required to process the analogue signals from the CCD or CIS prior to the internal ADC.

FEATURES

• Correlated double sampling

• Programmable gain amplifier

• Programmable input clamp voltage

• Offset correction

• 12-bit, 12MSPS ADC

• Internal voltage reference

• 12-bit or 8+4 bit data output mode

• Single 5V supply or 5V analogue/3.3V digital supply

• Programmable sample timing

• Control interface compatible with previous Wolfson AFEs

• 48-pin TQFP package

APPLICATIONS

• Flatbed scanners

• Document scanners

• Multi-function peripherals (MFPs)

• Colour copiers

• Character recognition systems

• Linear array CCDs

• Contact image sensors (CIS)