Wolfson Microelectronics announced an addition to its portfolio of high-performance analog front-end (AFE) digitiser devices. This fast, pipeline ADC converter is specifically designed for use in high speed next generation digital photocopier products.
Digital photocopiers typically use odd/ even two output CCD sensors, either using one for monochrome operation or three for colour implementations. Wolfson's new AFE is designed to be used on a one per sensor basis. It may also find applications in very high speed flat bed scanners.
The 2-channel Wolfson WM8216 offers a 60 MSPS conversion rate, 10 bit resolution, dual channel operation and correlated double sampling. Power consumption is low at just 330mW typical. It provides a highly integrated solution, integrating all of the major analogue signal conditioning and A-D conversion requirements of the interface between image sensor and the main digital architecture of a photocopier system onto a single mixed signal device.
This includes a 9 bit Programmable Gain Amplifier, and an internal 4-bit DAC, for internal reference level generation, which may be used to reference CIS signals or clamp CCD signals. Alternatively, an external reference may be supplied. Both the analogue and digital parts of this device operate from a 3.3V supply.
Wolfson Microelectronics plc , Edinburgh EH11 2QB, UK.