AMIS-721250 Datasheet | AMI SEMICONDUCTOR

Description AMI Semiconductor’s AMIS-721250 (PI6050D) contact image sensor (CIS) is a selectable 600 or 1200 dot per inch (dpi) resolution linear image sensor, which employs AMI Semiconductor’s proprietary CMOS image sensing technology. The sensor contains an onchip output amplifier, power-down circuitry and parallel transfer features that are uniquely bined with the present-day active-pixelsensor technology. The image sensors are designed to be cascaded end-to-end on a printed circuit board (PCB) and packaged in an image sensing module. Applications for the sensor array includes facsimiles, PC scanners, check readers, and office automation equipment. Figure 1 is a block diagram of the sensor. Each sensor consists of 688 active pixels, their associated multiplexing switches, buffers, and an output amplifier circuit with a power down feature . The sensors pixel-pixel spacing is approximately 21.15µm. The size of each sensor without the scribe lines is 14560µm by 425µm. 2.0 Key Features - - - - - - - - - - - - 600 or 1200dpi selectable resolutions 344 or 688 image sensor elements (pixels) 21.15µm (1200dpi) pixel center-to-center spacing (47.24dots/mm) On-chip amplifier Single 5.0V power supply 3.3V input clocks 3.0MHz maximum pixel rate Parallel / integrate and transfer Power-down circuit High sensitivity Low power Low noise .. 14560µm 21.15µm 1 1 2 2 3 3 4 4 Row of 688 Pixels (1200dpi) or Selectable Row of 344 Pixels (600dpi) and Video Line Multiplexer 342 686 343 687 344 688 Parallel Transfer, Storage Cells and Readout Registers 425µm Amplifier, Power Down and Offset Control SI GBST CLK SIC SC VDD VOUT VSS VREF SO Figure 1: Sensor Block Diagram AMI Semiconductor - Dec. 05, M-20496-004 .amis. AMIS-721250: Contact Image Sensor 3.0 Unique Features There are six unique features incorporated into the AMIS-721250 which improve the sensor’s performance. 3.1 Pixel-to-Pixel Offset Cancellation Circuit Data Sheet The sensor employs a pixel-to-pixel offset...