AR0230CSSC00SUEA0-DRBR datasheet(7/36 Pages) ONSEMI

7 / 36 page

AR0230CS/D Rev. 8, Pub. 11/15 EN

©Semiconductor Components Industries, LLC, 2015.

AR0230CS: 1/2.7-Inch 2.1 Mp/Full HD Digital Image Sensor

Functional Overview

The AR0230CS 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 48 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 configured in linear

mode, and in HDR mode.

Figure 1:

Block Diagram of AR0230CS

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 2.1 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

incident light. The exposure is controlled by varying the time interval between reset and

readout. Once a row has been read, the data from the columns is sequenced through an

analog signal chain (providing offset correction and gain), and then through an analog-

to-digital converter (ADC). The output from the ADC is a 12-bit value for each pixel in

the array. The ADC output passes through a digital processing signal chain (which

provides further data path corrections and applies digital gain). The sensor also offers a

Row Noise Correction

Black Level Correction

Test Pattern Generator

Pixel Defect Correction

Adaptive CD Filter

Digital Gain and Pedestal

A-Law Compression

Parallel

HiSPi

12 bits

10 bits

ADC Data

HDR Linearization

Smoothing Filter

Digital Gain and Pedestal

Companding or ALTM

Parallel

HiSPi

12 bits

14 or 12bits

16 bits

Row Noise Correction

Black Level Correction

Test Pattern Generator

Pixel Defect Correction

Adaptive CD Filter

Motion Correction

ADC Data

HDR Linearization

In Linear Mode

In HDR Mode

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