AR0141CS datasheet(4/64 Pages) ONSEMI

4 / 64 page

AR0141CS/D Rev. 6, 4/16 EN

©Semiconductor Components Industries, LLC, 2016.

AR0141CS: 1/4-Inch Digital Image Sensor

General Description

The ON Semiconductor AR0141CS can be operated in its default mode or programmed

for frame size, exposure, gain, and other parameters. The default mode output is a 720p-

resolution image at 60 frames per second (fps). In linear mode, it outputs 12-bit raw

data, using either the parallel or serial (HiSPi) output ports. The device may be operated

in video (master) mode or in single frame trigger mode.

FRAME_VALID and LINE_VALID signals are output on dedicated pins, along with a

synchronized pixel clock in parallel mode.

The AR0141CS includes additional features to allow application-specific tuning:

windowing and offset, auto black level correction, and on-board temperature sensor.

Optional register information and histogram statistic information can be embedded in

the first and last 2 lines of the image frame.

.Functional Overview

The AR0141CS is a progressive-scan sensor that generates a stream of pixel data at a

constant frame rate. It uses an on-chip, phase-locked loop (PLL) that can be optionally

enabled to generate all internal clocks from a single master input clock running between

6 and 50 MHz. The maximum output pixel rate is 148.5 Mp/s, corresponding to a clock

rate of 74.25 MHz. Figure 1 shows a block diagram of the sensor.

Figure 1:

Block Diagram

User interaction with the sensor is through the two-wire serial bus, which communi-

cates with the array control, analog signal chain, and digital signal chain. The core of the

sensor is a 1.1 Mp Active- Pixel Sensor array. The timing and control circuitry sequences

through the rows of the array, resetting and then reading each row in turn. In the time

interval between resetting a row and reading that row, the pixels in the row integrate

Digital gain and

pedestal

12 bits

Parallel

HiSPi

12 or 10 b its

Row noise correction

Black level correction

Pixel defect correction

Test pattern generator

ADC data

Adaptive CD filter

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