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XRD9826 Datasheet(PDF) 1 Page - Exar Corporation |
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XRD9826 Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 33 page  EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XRD9826 16-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control May 2000-3 FEATURES · 16-Bit Resolution · One-channel 6MSPS Pixel Rate · Triple-channel 2MSPS Pixel Rate · 6-BitProgrammableGainAmplifier · 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 · SerialLoadControlRegisters · Low Power CMOS: 200mW-typ · Low Cost 20-Lead Packages · USBCompliant APPLICATIONS · Color and Grayscale Flatbed Scanners · Color and Grayscale Sheetfed Scanners · MultifunctionPeripherals · DigitalColorCopiers · General Purpose CIS or CCD Imaging · Low Cost Data Acquisition · Simple and Direct Interface to Canon 600 DPI Sensors GENERAL DESCRIPTION The XRD9826 is a complete linear CIS or CCD sensor signal processor on a single monolithic chip. The XRD9826 includes a high speed 16-bit resolution ADC, a 6-bit Programmable Gain Amplifier with gain adjust- ment 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 XRD9826. 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 AC coupled similar to the CCD configura- tion. This enables CIS signals with large black levels to be internally clamped to a DC reference equal to the black level. The DC reference is internally subtracted from the input signal. The CIS configuration can also be used in other applications that do not require CDS function, such as low cost data acquisition. Rev. 1.00 ORDERING INFORMATION PackageType TemperatureRange PartNumber 20-LeadSOIC 0°C to +70°C XRD9826ACD 20-LeadSSOP 0°C to +70°C XRD9826ACU |
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