Image Sensors World Go to the original article...
Ametek Vision Research publishes a white paper "Understanding How A BSI Sensor Has Advanced High-Speed Imaging" about 1280x720 pixel 76,000fps device powering TMX series of cameras. Few quotes:"Embedding analog-to-digital converters (ADC) on CMOS image sensors is standard practice, but the BSI sensor’s speed required a massive increase in the amount of ADC. While modern CMOS image sensors typically have between 1,000 and 10,000 embedded ADC, the new BSI high-speed sensor has 40,000 ADC, each converting every 523 ns and generating a large amount of data to off-load from the sensor. To accomplish this task, it incorporates 160 high-speed serial outputs operating at greater than 5 Gbps. This technology is common on CPUs and FPGAs but new on a high-speed imaging sensor.
The density of ADC on the new sensor did create power management and electrical crosstalk challenges, which were solved with the help of our design and integrated production partner, Forza Silicon.
...testing of early designs revealed a higher level of ADC crosstalk in both normal imaging and binning modes than our simulation tools had predicted, causing noticeable artifacts in the images. Forza engineers discovered that the crosstalk exhibited predictable patterns and developed modeling techniques that helped us eliminate the crosstalk altogether, which in turn mitigated imaging artifacts."
