WM8216_07 Datasheet, PDF (1/27 Pages) Wolfson Microelectronics plc – 60MSPS 10-bit 2-channel CCD Digitiser

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WM8216
60MSPS 10-bit 2-channel CCD Digitiser
DESCRIPTION
The WM8216 is a 10-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 60MSPS.
The device includes two analogue signal processing
channels each of which contains Reset Level Clamping,
Correlated Double Sampling and Programmable Gain and
Offset adjust functions. The output from each of these
channels is time multiplexed into a single high-speed 10-bit
Analogue to Digital Converter. The digital output data is
available in 10-bit wide parallel format.
An internal 4-bit DAC is supplied for internal reference level
generation. This may be used during CDS to reference CIS
signals or during Clamping to clamp CCD signals. An
external reference level may also be supplied. ADC
references are generated internally, ensuring optimum
performance from the device.
Using an analogue supply voltage of 3.3V and a digital
interface supply of 3.3V, the WM8216 typically only
consumes 330mW
BLOCK DIAGRAM
FEATURES
• 10-bit ADC
• 60MSPS conversion rate
• Low power – 330mW typical
• 3.3V single supply operation
• Single or dual channel operation
• Correlated double sampling
• Programmable gain (9-bit resolution)
• Programmable offset adjust (8-bit resolution)
• Flexible clamp timing
• Programmable clamp voltage
• Internally generated voltage references
• 32-lead QFN package
• Serial control interface
APPLICATIONS
• Digital Copiers
• USB2.0 compatible scanners
• Multi-function peripherals
• High-speed CCD/CIS sensor interface
WOLFSON MICROELECTRONICS plc
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Production Data, March 2007, Rev 4.0
Copyright ©2007 Wolfson Microelectronics plc.