ICM108B Datasheet, PDF (5/20 Pages) List of Unclassifed Manufacturers – 1.3 million pixel Color CMOS image sensor

ICM108B 1.3 million pixel CMOS sensor
Data Sheet V 1.1 November, 2002
Class Code: A – Analog signal, D – Digital signal, I – Input, O – Output, P – Power or ground, U – Internal
pull-up, N – Internal pull-down
2. Functional Description
ICM-108B is a single-chip digital color imaging device. It includes a 1280x1024 sensor array, 1280
column-level ADC, and correlated double sampling circuitry. All the programmable parameters are set by
writing into the SIF interface which can address the register file consisting of 8-bit registers. The output
format is 10-bit raw data, together with horizontal and vertical sync signals.
SIF
Interface
Timing & Function
Control
Sensor Array
1280 x 1024
Column-Level
ADC
Correlated
Double
Sampling
Individual
RGB gain control
RGB Bayer Pattern
Output Control
Figure 1. Block diagram
2.1 Image Array
The image array consists of 1280x1024 pixels. Each pixel has a light sensitive photo diode and a set of
control transistors. At the beginning of the cycle, a row of pixels is pre-charged to its maximum value.
Then the row is exposed to light for several lines worth of time and sampled by the ADC. A “Correlated
Double Sampling (CDS)” process is performed with subtracting the reset value (sampled right before
sampling the signal) from the signal value. The purpose of CDS is to eliminate the point-wise fixed pattern
noise (FPN). The output of CDS is approximately proportional to the amount of received light, ranging
from 0 to 1023.
©2000, 2001, 2002 IC Media Corporation & IC Media Technology Corp.
11/22/2002
page 5
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