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WM8199 - 20MSPS 16-bit CCD Digitiser

General Description

The WM8199 is a 16-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 20MSPS.

Key Features

  • 16-bit ADC.
  • 20MSPS conversion rate.
  • 30MSPS conversion rate at 8-bits.
  • Low power.
  • 358mW typical.
  • 5V single supply or 5V/3.3V dual supply operation.
  • Single or 3 channel operation.
  • Correlated double sampling.
  • Programmable gain (8-bit resolution).
  • Programmable offset adjust (8-bit resolution).
  • Programmable clamp voltage.
  • 8 or 4-bit wide multiplexed data output formats.
  • Internally generated voltage references.
  • 28-lead SSOP pac.

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WM8199 20MSPS 16-bit CCD Digitiser DESCRIPTION The WM8199 is a 16-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 20MSPS. The device includes three analogue signal processing channels each of which contains Reset Level Clamping, Correlated Double Sampling and Programmable Gain and Offset adjust functions. Three multiplexers allow single channel processing. The output from each of these channels is time multiplexed into a single high-speed 16-bit Analogue to Digital Converter. The digital output data is available in 8 or 4-bit wide multiplexed format. An internal 4-bit DAC is supplied for internal reference level generation.