IMX646-AAMR-C Event-based Vision Sensor IC with Diagonal 7.1 mm Size 0.92 M Effective Pixels and Low Latency 800 μs

IMX646-AAMR-C is a diagonal 7.1 mm (Type 1/2.5) approximately 0.92 M effective pixels (1280 (H) x 720 (V)) event-based vision sensor. This sensor detects brightness changes that exceed the set thresholds independently for each pixel, and asynchronously outputs the coordinates (X, Y) of detected pixels, the detected times (timestamp), and the brightness change polarity information in the order detected. This enables high-speed, low-latency (800 μs or less at 1000 lux) output.

Output of only brightness changes enables swift capture of moving subjects, and areas without brightness changes are not output, realizing a sensor that enables efficient data extraction. The sensor also features pixel characteristics where the output voltage is output logarithmically relative to the input light intensity, which enables event output with a high dynamic range. This chip operates with analog 3.0 V, digital 1.1 V, and 1.8 V triple power supply.

• Number of effective pixels: 1280 (H) × 720 (V) approx. 0.92 M pixels
• Built-in logarithmic I/V converter circuit, Illuminance-change detection unit, and Arbiter circuit
• Pixel ROI
• Analog ROI Arbitrary Row Column Specification Mode, Analog ROI Window Mode, Digital Crop
• External trigger
• Pixel reset
• I/O interface
• MIPI (1 Lane / 2 Lane switching) output, SLVS (2 ch / 4 ch switching) output
• Event output formats (Event compression): EVT 2.1 (64-bit based event output format), EVT 3.0 (16-bit encoding event output format)
• Characteristics adjustment setting function
• Contrast threshold adjustment function, Latency adjustment function, Dead time adjustment function, Analog noise filter function
• Thermometer, Illuminometer (absolute Illuminometer, relative Illuminometer)
• Readout wait function
• Number of vectors count function
• Region number of vectors count function
• Event signal processing functions: Anti-flicker function, Event filter function, Event rate function
• Multi-sensor synchronization function (master / slave)
• Digital event mask function (pixel mask)
• Event polarity inversion function
• Input frequency setting

• Surveillance/Area Monitoring
• Driver Monitoring Systems
• IoT
• Smart Home