(For complete documentation, see the data sheet.) 

The AR0144AT is a 1/4-inch 1.0 Mp CMOS digital image sensor with an active-pixel array of 1280 (H) × 800 (V). It incorporates a new innovative global shutter pixel design optimized for accurate and fast capture of moving scenes. The sensor produces clear, low noise images in both low-light and bright scenes. It includes sophisticated camera functions such as auto exposure control, windowing, row skip mode, column-skip mode, pixel-binning and both video and single frame modes. It is programmable through a simple two-wire serial interface. The AR0144AT produces extraordinarily clear, sharp digital pictures, and its ability to capture both continuous video and single frames makes it the perfect choice for a wide range of applications, including automotive in-cabin systems.

 

 ●  Superior Low-light and IR Performance 

 ●  HD Video (800P@60fps;720p@66fps) 

 ●  2-Lane MIPI or Parallel data interface 

 ●  AEC-Q100 Grade 2 Qualified

 ●  Automatic Black Level Calibration (ABLC) 

 ●  Programmable Control for Region Of Interest (ROI) 

 ●  Horizontal and Vertical Mirroring, Windowing and Pixel Binning 

 ●  On-chip Auto Exposure Control for Any Programmable ROI 

 ●  5 × 5 Statistics Engine for Any Programmable ROI

 ●  Flexible Control for Row and Column Skip Mode

 ●  On-chip Slave or Trigger Mode for Synchronization 

 ●  Built in Strobe Control 

 ●  On-chip Phase Lock Loop (PLL) 

 ●  On-Chip Slave or Trigger Mode for Synchronization

Optical Format：1/4-inch (4.5 mm)

Active Pixels：1280 (H) × 800 (V) = 1.0 Mp

Pixel Size：3.0μm

Color Filter Array：Monochrome

Chief Ray Angle：20°

Shutter Type：Global Shutter

Input Clock Range：6-48 MHz

Output Pixel Clock (Maximum)：74.25 MHz

Output Serial Parallel：MIPI, 2-lane 12-bit

Frame Rate Full Resolution 720p：60 fps

Responsivity Monochrome：56 ke-/lux*s

SNRMAX：38 dB

Dynamic Range：71.4 dB

Supply Voltage

I/O：1.8 or 2.8 V

Digital：1.2 V

Analog：2.8 V

Power Consumption < 215 mW

Operating Temperature ：–40°C to + 105°C (Ambient) or –40°C to + 125°C (Junction)

Package Options：7 x 7 mm 63-ball iBGA  or Bare Die

 

 ●  In Cabin Automotive

    ◆ Gesture Recognition

    ◆ Iris Scanning

    ◆ Head Roll

    ◆ Eye Tracking

    ◆ Augmented Reality

    ◆ Machine Vision

                                 

Table 2. 
AR0144 ORDERING INFORMATION

Part Number / Product Description / Orderable Product Attribute Description

AR0144ATSM20XUEA0-DPBR Mono, iBGA Mono, iBGA, CRA=20°, Dry pack with PF, Double Sided BBAR Glass

AR0144ATSM20XUEA0-DRBR Mono, iBGA Mono, iBGA, CRA=20°, Dry pack without PF, Double Sided BBAR Glass

AR0144ATSM20XUEA0-TPBR Mono, iBGA Mono, iBGA, CRA=20°, Tape & Reel with PF, Double Sided BBAR Glass

AR0144ATSM20XUEA0-TRBR Mono, iBGA Mono, iBGA, CRA=20°, Tape & Reel without PF, Double Sided BBAR Glass

AR0144ATSM20XUEAD3-GEVK Mono, iBGA Mono, Demo kit

MARS1-AR0144ATSM-GEVB Mono, iBGA MARS Parallel board

MARS1-AR0144ATSMS-GEVB Mono, iBGA MARS MIPI board

GAZET1-AR0144ATSM-GEVK Mono, iBGA GazeT Driver Monitoring System kit

 

The ON Semiconductor AR0144AT can be operated in its default mode or programmed for frame size, exposure, gain, and other parameters. The default mode output is a full-resolution image at 60 frames per second (fps). It outputs 12-bit raw data, using either the parallel or serial (MIPI) output ports. The device may be operated in video (master) mode or in frame trigger mode.

 

FRAME_VALID and LINE_VALID signals are output on dedicated pins, along with a synchronized pixel clock. A dedicated FLASH pin can be programmed to control external LED or flash exposure illumination.

 

The AR0144AT includes additional features to allow application-specific tuning: windowing, adjustable auto-exposure control, auto black level correction, on-board temperature sensor, row-skip and column-skip

modes and binning modes.

The sensor is designed to operate in a wide temperature range (–40°C to +105°C).

 

The AR0144AT 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 74.25 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 communicates with the array control,

analog signal chain, and digital signal chain. The core of the sensor is a 1.0 Mp Active-Pixel Sensor array. The

AR0144AT features global shutter technology for accurate capture of moving images. The exposure of the entire array is controlled by programming the integration time by register setting. All rows simultaneously integrate light prior to 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 pixel data are output at a rate of up to 74.25 Mp/s, in parallel to frame and line synchronization signals.

 

The AR0144AT Global Shutter sensor has a wide array of features to enhance functionality and to increase versatility. A summary of features follows. Please refer to the AR0144 Developer Guide for detailed feature descriptions, register settings, and tuning guidelines and recommendations.

 ●  3.0 m Global Shutter Pixel

To improve the low light performance and to capture the moving images accurately a large (3.0 m) global

shutter pixel is implemented for better image optimization.

 ●  Operating Modes

The AR0144AT works in master (video), trigger (single frame), or Auto Trigger modes. In master mode,  the sensor generates the integration and readout timing.  In trigger mode, it accepts an external trigger to start

exposure, then generates the exposure and readout timing. The exposure time is programmed through the

two-wire serial interface for both modes.

 ●  Window Control

Configurable window size and blanking times allow a wide range of resolutions and frame rates. Digital binning and skipping modes are supported, as are vertical and horizontal mirror operations.

 ●  Frame Rate

AR0144AT is capable of running up to 60 fps at full (1280 × 800) resolution and 66 fps at 720p resolution.

 ●  Embedded Data and Statistics

The AR0144AT has the capability to output image data and statistics embedded within the frame timing.

 ●  Multi-Camera Synchronization

The AR0144AT supports advanced line synchronization controls for multi-camera (stereo) support.

 ●  Slave Mode

The slave mode feature of the AR0144AT supports triggering the start of a frame readout from an input signal that is supplied from an external source. The slave mode signal allows for precise control of frame rate and register change updates.

 ●  Context Switching and Register Updates

Context switching may be used to rapidly switchbetween two sets of register values. Refer to the AR0144 Developer Guide for a complete description of context switchable registers.

 ●  Gain

A programmable analog gain of 1x to 16x applied globally to all color channels is available along with a digital gain of 1x to 16x that may be configured on a per color channel basis.

 ●  Automatic Exposure Control

The integrated automatic exposure control may be used to ensure optimal settings of exposure and gain are

computed and updated every other frame. Refer to the AR0144 Developer Guide for more details.

 ●  MIPI

The AR0144AT Global Shutter image sensor supports

two lanes of MIPI data. Compliant to MIPI standards:

    ◆ MIPI Alliance Standard for CSI-2 version 1.2

    ◆ MIPI Alliance Standard for D-PHY version 1.0

 ●  PLL

An on chip PLL provides reference clock flexibility and supports spread spectrum sources for improved EMI

performance.

 ●  Reset

The AR0144AT may be reset by a register write, or by a dedicated input pin.

 ●  Output Enable

The AR0144AT output pins may be tri?stated using a dedicated output enable pin.

 ●  Temperature Sensor

 ●  Black Level Correction

 ●  Row Noise Correction

 ●  Test Patterns

Several test patterns may be enabled for debug purposes. These include a solid color, color bar, fade to gray, and a walking 1s test pattern.

 ●  Silicon/OTPM Revision Information

A revision register is provided to read out (via I2C) silicon and OTPM revision information. This will be helpful to distinguish material if there are future OTPM or silicon revisions.

 ●  Lens Shading Correction

A lens shading correction algorithm is included for potential low Z height applications.

 ●  Compression

AR0144AT can optionally compress 12-bit data to 10-bit using A-law compression.

 

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