IBIS4-1300
Document Number: 38-05707 Rev. *B
Page 2 of 37
TABLE OF CONTENTS
Overview ............................................................................................................................. 1
Features .............................................................................................................................. 1
Part Number ........................................................................................................................ 1
Architecture of the image sensor.......................................................................................... 4
Image sensor core - focal plane array ...................................................................................... 5
Output amplifier ........................................................................................................................ 11
Analog to digital converter ........................................................................................................ 17
ADC timing ............................................................................................................................... 18
Operation of the image sensor ............................................................................................ 20
Set configuration & pulse timing ...............................................................................................20
Illumination control ................................................................................................................... 26
"Double slope" or "High-dynamic range" mode ........................................................................ 27
Electrical parameters ............................................................................................................... 28
Pin configuration .................................................................................................................. 29
Pin list ....................................................................................................................................... 29
Bonding pad geometry for the IBIS4-1300 ............................................................................... 31
Package .............................................................................................................................. 33
Cover glass .............................................................................................................................. 33
Ordering Information ...........................................................................................................35
FAQ ..................................................................................................................................... 35
Temperature dependence of dark signal ................................................................................. 35
Useful range of "double slope" .................................................................................................35
Skipping rows or columns ........................................................................................................ 36
Disclaimer ............................................................................................................................ 36
Document History Page ...................................................................................................... 37
LIST OF FIGURES
Block diagram ................................................................................................................................... 4
Architecture of the image sensor core .............................................................................................. 4
Pixel selection - principle .................................................................................................................. 5
Spectral response * fill factor of the IBIS4-1300 pixels ..................................................................... 7
Near infrared spectral response ....................................................................................................... 8
IBIS4-1300 response curve - two pixels - lowest gain setting (0000) ............................................... 9
Output amplifier architecture ............................................................................................................. 12
Offset adjustment: fast offset adjustment mode ............................................................................... 13
Slow offset adjustment mode ............................................................................................................ 13
Output amplifier DC gain .................................................................................................................. 15
Output amplifier bandwidth for different gain settings ....................................................................... 16
Typical transfer characteristic of the output amplifier (no clipping, Voffset = 2 V, input signal during offset
adjustment is 1.2 V) ........................................................................................................................... 16
Suggested circuit for high and low references of DAC ..................................................................... 17
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