Why not use the ADC's used for CIS (contact image sensors, the linear sensors in consumer-grade scanners / photocopiers)? For example: 12 MHz (i.e. 12 000 kHz

Why not use the ADC's used for CIS (contact image sensors, the linear sensors in consumer-grade scanners / photocopiers)? For example: 12 MHz (i.e. 12 000 kHz) sample rate per channel, 4 channels, 16 bit ADC: https://www.akm.com/eu/en/products/mfp-lbp/ak8471vn/ https://www.akm.com/eu/en/products/mfp-lbp/ak8471vn/ single digit dollar unit prices: https://octopart.com/search?q=AK8471VN&currency=USD&specs=0 https://octopart.com/search?q=AK8471VN&currency=USD&specs=0