XRD9827

XRD9827 12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control May 2000-3 FEATURES APPLICATIONS · · · · · · · · · · · · 12-Bit Resolution, No Missing Codes One-channel 6MSPS Pixel Rate Triple-channel 2MSPS Pixel Rate 6-Bit Programmable Gain Amplifier 8-Bit Programmable Offset Adjustment CIS or CCD Compatibility Internal Clamp for CIS or CCD AC Coupled Configurations 3.3V or 5V Operation & I/O Compatibility Serial Load Control Registers Low Power CMOS: 200mW-typ Low Cost 20-Lead Packages USB Compliant · · · · · · · Color and Grayscale Flatbed Scanners Color and Grayscale Sheetfed Scanners Multifunction Peripherals Digital Color Copiers General Purpose CIS or CCD Imaging Low Cost Data Acquisition Simple and Direct Interface to Canon 600 DPI Sensors GENERAL DESCRIPTION The XRD9827 is a complete linear CIS or CCD sensor signal processor on a single monolithic chip. The XRD9827 includes a high speed 12-Bit resolution ADC, a 6-Bit Programmable Gain Amplifier with gain adjustment of 1 to 10, and 8-Bit programmable input referred offset calibration range of 800mV. In the CCD configuration the input signal is AC coupled with an external capacitor. An internal clamp sets the black level. In the CIS configuration, the clamp switch can be disabled and the CIS output signal is DC coupled from the CIS sensor to the XRD9827. The CIS signal is level shifted to VRB in order to use the full range of the ADC. In the CIS configuration the input can also be ORDERING INFORMATION ...