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W6662CF Datasheet

  • W6662CF

  • SCANNER ANALOG FRONT END

  • 269.31KB

  • 19頁(yè)

  • WINBOND

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Preliminary W6662CF
SCANNER ANALOG FRONT END
1. GENERAL DESCRIPTION
The W6662 is a highly integrated CCD/CIS analog front end signal processor. It provides the
components required for all necessary front-end signal process of a CCD/CIS scanner, including a 3-
channel input clamp circuit for correlated double sampling (short as CDS) mode, a multiplexer to mux
3-channel inputs to a correlated double sampling (CDS) circuit, a programmable offset adjusted and
gain controlled amplifier, a 12-bit analog-to-digital converter.
CDS or S&H (sample and hold) of operation modes can be chosen. The device configuration is
programmed via 3-wire or 4-wired interface, operation modes, offset and gain value of each channel
can be programmed.
2. FEATURES
鈥?/div>
12-bit A/D Converter
鈥?/div>
No Missing Code Guaranteed
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Three channels analog input with clamp circuit individually
鈥?/div>
Integrated Correlated Double Sampler (CDS)
鈥?/div>
Supports Contact Image Sensors (CIS)
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Accept CCD/CIS sensor with three channel or single channel analog out
鈥?/div>
External offset voltage input for CIS reference voltage
鈥?/div>
Built-in bandgap reference circuit for CDS mode and A/D Converter
鈥?/div>
Integrated 6-bit Programmable Gain Amplifier (PGA) with 3-channel register selected
鈥?/div>
Integrated 8-bit offset adjustment with 3-channel register selected
鈥?/div>
3 MHz sampling rate of offset/gain adjustment circuit
鈥?/div>
Three-wired or four-wired Serial Interface programmable
鈥?/div>
Registers readback capability
鈥?/div>
Low power CMOS device
鈥?/div>
Power down mode supported
鈥?/div>
3/5V digital I/O pin
鈥?/div>
Packageed in 48-pin QFP
Applications:
Flatbed Scanners
Sheetfeed Scanners
Film Scanners
-1-
Publication Release Date: December 1998
Revision A1

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  • 英文版
    winbond usb scanner processor
    Winbond
  • 英文版
    SCANNER ANALOG FRONT END
    WINBOND
  • 英文版
    SCANNER ANALOG FRONT END
    WINBOND [W...

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