16-Slice CT Sensor
Features
High sensitive photodiode and ADC in one integrated sensor
Calibration mode for external linearity calibration
Adjustable full scale range, resolution, integration time and active sensor area
Adaptive array enables selection of total sensor dimension of 16 mm or 32 mm
Customization of pixel dimensions on request
Benefits
Ultra-low input related noise down to typ. 0.20 fC
Fast integration time down to 200 µs
Low power dissipation down to typ. 0.65 mW per channel
High ADC linearity of ±300 ppm of reading and total linearity of ±600 ppm including the photodiode
Up to 25-bit resolution
Product parameters
Application: Medical, Industrial and Security CT scanners
Primary Function: 16-Slice CT Sensor
Channels: 64 channels
Resolution [bit]: 25
Input Related Noise [fC]: 0.20
Min. Power Consumption [mW per Channel]: 0.65
Min. Integration Time [µs]: 200
Package: Die on Foil
General Description
The AS5950 is a sensor chip for 16-slice CT detectors that combines the photodiodes and the readout circuit on a single CMOS chip. This sensor solution, which includes an array of photodiodes with ultra-low dark current and a 64-channel ADC side-by-side, allows the assembly of the pixel array on three adjacent edges of the device. Two AS5950 ICs can be placed in Z-direction enabling the design of 16-slice detectors for cost optimized CT machines.