AR0134CS_16 Datasheet, PDF (4/38 Pages) ON Semiconductor – 1/3-Inch 1.2 Mp CMOS Digital Image Sensor

AR0134CS: 1/3-Inch 1.2 Mp CMOS Digital Image Sensor
General Description
General Description
The ON Semiconductor AR0134 can be operated in its default mode or programmed for
frame size, exposure, gain, and other parameters. The default mode output is a full-reso-
lution image at 54 frames per second (fps). 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 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 AR0134 includes additional features to allow application-specific tuning:
windowing, adjustable auto-exposure control, auto black level correction, on-board
temperature sensor, and row skip and digital binning modes.
The sensor is designed to operate in a wide temperature range (–30°C to +70°C).
Functional Overview
The AR0134 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 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
Power
Trigger
Two-Wire
Serial
Interface
Active Pixel Sensor
(APS)
Array
Analog Processing and
A/D Conversion
Temperature
sensor
OTPM
Memory
PLL
Timing and Control
(Sequencer)
Auto Exposure
and Stats Engine
Pixel Data Path
(Signal Processing)
External
Clock
Serial
Output
Parallel
Output
Flash
Control Registers
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 1.2 Mp Active- Pixel Sensor array. The AR0134 features global shutter tech-
nology for accurate capture of moving images. The exposure of the entire array is
controlled by programming the integration time by register setting. All rows simultane-
ously 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
AR0134CS/D Rev. 8, Pub. 1/16 EN
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