The VB56G4A is a 1.5 MP pixel global shutter image sensor designed for automotive driver monitoring applications. Using the superior 3D stacking technology and ST patented process, the sensor performs excellent in the near infrared region (940 nm). Thanks to backside illumination technology (BSI) and its excellent sensitivity, the VB56G4A can be operated with a simple LED or VCSEL. This makes them ideal for applications such as driver monitoring systems (DMS).

And in order to help customers evaluate and verify the image quality, ST launched a miniaturized development board (CX3)_ as shown below:

►Core technical advantages

1.) High sensitivity: improved quantum efficiency (Quantum efficiency), greatly improving the performance in invisible light (Near IR).
                          And has a high modulation transfer function (High MTF)
2.) Small footprint (Small footprint): Stack BSI
3.) Embedded ISP :
-5x5 dynamic defect pixel correction
_Auto Exposure Control
4.) Machine vision application support
_24x14 area statistics
_4 frame contexts, quick switches and sequences
_LED strobe control output, flexible timing

►Program Specifications

 Automotive compliance
• AEC-Q100 grade 2
• Operating junction temperature: -40°C to 125°C

 1.5-megapixel image sensor in a small package
• Global shutter architecture, 3D stack sensor 40 nm/65 nm
• 2.61 µm x 2.61 µm BSI (backside illuminated) pixels
• 1.5-megapixel monochrome sensor (1124 x 1364)

 Package: OBGA
• Dimensions: 6.2mm x 6.9mm

 Easy to integrate
• Built-in automatic exposure function
• Programmable sequence : 4-frame contexts
• 8 programmable GPIOs
_NIR (near infrared) illumination control output, synchronized with sensor integration period
       _PWM (pulse width modulation) control
       _Master/Slave external framework starts
• Automatic dark calibration
• Dynamic Pixel Defect Correction
• Image cropping
• Mirror/flip readout
• Binning and subsampling (x2 and x4)
• Typical power consumption: 145 mW at 60 fps
• Dual lane transmitter MIPI CSI-2 up to 1.5 Gbps per lane

 Unique image performance
• Peak quantum efficiency 24% @ 940 nm
• Linear dynamic range up to more than 60 dB
• Up to 88 frames per second at full resolution

►Scene Application Diagram

►Display board photos

►ST Automotive In cabin_ DMS Solution