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參數資料
| 型號： | XRD9827EVAL |
| 廠商： | Exar Corporation |
| 文件頁數： | 1/36頁 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR XRD9827 |
| 標準包裝： | 1 |
| 系列： | * |
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EXAR Corporation, 48720 Kato Road, Fremont, CA 94538
(510) 668-7000 FAX (510) 668-7017 www.exar.com
XRD9827
12-Bit Linear CIS/CCD Sensor
Signal Processor with Serial Control
December 2000-2
FEATURES
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
3.0V or 5V Operation & I/O Compatibility
Serial Load Control Registers
Low Power CMOS: 200mW-typ
Low Cost 20-Lead Packages
USB Compliant
APPLICATIONS
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
ORDERING INFORMATION
PackageType
TemperatureRange
PartNumber
20-Lead SOIC
0°C to +70°C
XRD9827ACD
20-LeadSSOP
0°C to +70°C
XRD9827ACU
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 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 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
AC coupled similar to the CCD configuration. 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 appli-
cations that do not require CDS function, such as low
cost data acquisition.
Rev. 3.00
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