WM8196SCDS/RV

Overview

The WM8196SCDS/RV is a 16-bit analogue front end and digitiser designed for CCD and CIS sensors. It processes three analogue channels with Reset Level Clamping, Correlated Double Sampling, and programmable gain/offset adjustment. A single high-speed 16-bit ADC time-multiplexes the processed signals at rates up to 12MSPS. The device operates on a 5V analogue supply and supports 3.3V or 5V digital I/O. It features an internal 4-bit DAC for reference generation and outputs data in 8-bit or 4-bit multiplexed formats via a serial control interface.

Feature Summary

• 16-bit resolution with 12MSPS conversion rate
• Three independent processing channels with CDS and RLC
• Programmable 8-bit gain (0.74 V/V to 7.4 V/V) and offset adjust
• Internal voltage references and 4-bit RLC DAC
• 8 or 4-bit wide multiplexed digital output formats

Applications

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

Procurement Notes

Verify the 'RV' suffix indicates tape and reel packaging with a standard reel quantity of 2,000 units. Confirm the component is lead-free and meets MSL3 moisture sensitivity levels. Ensure the ordering code matches the specific temperature range of 0°C to 70°C required for the application environment.

Selection Notes

Select this device for applications requiring simultaneous multi-channel signal conditioning before digitization. The 12MSPS speed supports high-resolution scanning. Verify that the input signal amplitude fits within the 0.4V to 4.08Vp-p full-scale range after PGA adjustment. Ensure the system provides a master clock multiple of the pixel rate for proper sampling synchronization.

Part Context

Manufactured by Wolfson Microelectronics plc (now Cirrus Logic), the WM8196 serves as a dedicated AFE for imaging sensors. The SCDS/RV variant specifies the 28-lead SSOP package with tape and reel delivery. It is part of the WM819x family, sharing core architecture with variants like the WM8198 but distinguished by specific packaging and reel configurations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-model comparisons within the family, such as the WM8198, may require verification of pin compatibility and feature parity before substitution.