AR0237CS Datasheet, PDF (22/38 Pages) ON Semiconductor – 1/2.7-Inch 2.1 Mp/Full HD Digital Image Sensor

AR0237CS: 1/2.7-Inch 2.1 Mp/Full HD Digital Image Sensor
Features Overview
direction. Skipping pixels in the x-direction will not reduce the row time. Skipping pixels
in the y direction will reduce the number of rows from the sensor effectively reducing the
frame time. Skipping will introduce image artifacts from aliasing.
The AR0237 supports row wise vertical binning. Row wise vertical summing is only
supported in monochrome sensors.
Binning and summing is not supported with RGB IR sensors.
Clocking Options
The sensor contains a phase-locked loop (PLL) that is used for timing generation and
control. The required VCO clock frequency is attained through the use of a pre-PLL clock
divider followed by a multiplier. The PLL multiplier should be an even integer. If an odd
integer (M) is programmed, the PLL will default to the lower (M-1) value to maintain an
even multiplier value. The multiplier is followed by a set of dividers used to generate the
output clocks required for the sensor array, the pixel analog and digital readout paths,
and the output parallel and serial interfaces. Use of the PLL is required when using the
HiSPi interface.
Temperature Sensor
The AR0237 sensor has a built-in PTAT-based temperature sensor, accessible through
registers, that is capable of measuring die junction temperature. The value read out from
the temperature sensor register is an ADC output value that needs to be converted
downstream to a final temperature value in degrees Celsius. Since the PTAT device char-
acteristic response is quite linear in the temperature range of operation required, a
simple linear function can be used to convert the ADC output value to the final tempera-
ture in degrees Celsius.
A single reference point will be made available via register read as well as a slope for
back-calculating the junction temperature value. An error of +/-5% or better over the full
specified operating range of the sensor is to be expected.
Silicon / Firmware / Sequencer Revision Information
A revision register will be provided to read out (via I²C) silicon and sequencer/OTPM
revision information. This will be helpful to distinguish among different lots of material
if there are future OTPM or sequencer revisions.
Lens Shading Correction
The latest lens shading correction algorithm will be included for potential low Z height
applications.
Compression
When the AR0237 is configured for linear mode operation, the sensor can optionally
compress 12-bit data to 10-bit using A-law compression. The A-law compression is
disabled by default.
Packaging
The AR0237 will be offered in a 10x10 80-iBGA package (parallel and HiSPi) and a
11.43x1143 48 pin mPLCC (HiSSPi) package.
AR0237CS/D Rev. 4, 6/16 EN
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