WM8199SCDS/V

Overview

The WM8199SCDS/V is a 16-bit analogue front end and digitiser IC designed to process and digitise analogue output signals from CCD sensors or Contact Image Sensors (CIS). It supports pixel sample rates of up to 20MSPS at 16-bit resolution, with an extended rate of 30MSPS at 8-bit resolution. The device operates on a single 5V supply or a dual 5V/3.3V configuration. Key internal features include correlated double sampling, programmable gain with 8-bit resolution, programmable offset adjust, and programmable clamp voltage. It offers flexible data output formats, including 8-bit or 4-bit wide multiplexed options, and utilizes a serial control interface for configuration.

Feature Summary

• 16-bit ADC with 20MSPS conversion rate
• Correlated double sampling capability
• Programmable gain and offset adjust (8-bit resolution)
• Single or 3-channel operation modes

Applications

• Flatbed scanners
• Sheetfeed scanners
• USB compatible scanners
• Multi-function peripherals
• High-performance CCD sensor interfaces

Part Context

The WM8199 belongs to the Cirrus Logic family of high-speed CCD/CIS analog front ends. The 'SCDS' suffix typically denotes a specific package variant, such as SSOP, while '/V' often indicates a temperature range extension or specific manufacturing lot code. This component serves as a dedicated digitizer for imaging applications requiring precise signal conditioning before digital processing.

Replacement Considerations

Direct replacements within the same family include the WM8199CDR, WM8199CDS, and WM8199SCDR. These variants share identical functional specifications but may differ in package type (e.g., SOIC vs. SSOP) or lead-free status. Verify pin compatibility and thermal characteristics when substituting.