AMIS-710256-A6: 200dpi CIS Module
The PCB containing the imaging array is enclosed in a module housing along with a one-to-one graded indexed micro lens array, which
focuses the image of the scanned documents onto the sensing line of the sensor chips. The document is illuminated with an LED light
source which is also mounted in the housing (see Figure 2).
Figure 2: AMIS-710256-A6 Cross Sectional View
This pictorial cross section shows the LED bar light source and its illumination path. The light on the document reflects images of the
document. The reflected images focus through the micro lens onto the image sensing line of the chips, where images are converted to
proportional electrical charges. An on-board amplifier processes these signal charges into proportional video signal voltages, which are
sent out to the output video port.
All components are housed in a small plastic housing and covered with a glass window. This cover glass not only serves to protect all
of the critical components within the housing from dust, but along with the micro lens, it plays a minor role in the depth-of-focus because
it lies in the optical path.
There is one connector located at the end of the module. The outline of the module's housing in Figure 4 illustrates the connector
location. With the module window facing down on the flat surface, the viewer looking down on backside of the module and the
connector's pins facing the viewer, the connector is located on the right-hand end of the module. The connector is a single row of ten
pins with a 1.25mm pin space. It is a JAE 1L-Z-10P-S125T3-E. Its I/O designation is provided in Table 1. The location of Pin 1 is
indicated on the module outline.
Table 1: I/O Designation
Names and Functions
Analog video output
Positive power supply (+5V)
Return for Yellow-Green LED light source (0V)
Shift register start pulse
Sampling clock pulse
Return for red LED light source (0V)
Supply for the light source (+5V)
AMI Semiconductor – Aug. 2006, M-20607-001