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AS5900 CT Detector Interface

26-bit 128-channel low noise current-to-digital converter

Features

  • Flexible configuration to get the optimized operation point in your application
  • Adjustable full scale range, resolution, integration time and power consumption
  • High speed LVDS data interface
  • On board voltage reference and temperature sensor

Benefits

  • Ultra-low noise down to 3200 electrons for a full-scale range up to 1µA
  • Very fast integration time down to 50µs
  • High linearity of ±250ppm of reading ±1ppm of FSR
  • Very low power dissipation down to 1mW/channel
  • Up to 26-bit resolution

Product parameters

Application CT scanner
Primary Function Current-to-digital Converter
Channels 128-channel
Resolution [bit] 26
Input Related Noise [Electrons @ 1µA FSR] 3200
Min. Power Consumption [mW per Channel] 1
Min. Integration Time [µs] 50
Package FBGA248 (10mm x 10mm)

General Description

The AS5900 device is a low noise, 128-channel current-to-digital converter that enables the readout of the photodiodes with highest sensitivity. High-resolution CT imaging can be achieved up to 26-bits resolution. Its 128-low-noise and high linear converter channels provide an increased gray scale, improved contrast and reduce artifacts of 3D CT images. The low power consumption of 1mW per channel reduces self-heating effects and the overall power consumption of the system. An integrated temperature sensor allows the calibration of temperature drifts of the X-ray detector modules.

This product suits for the following applications:

  • Medical, industrial and security CT scanner data acquisition
  • Multi-channel sensors with current output (i.e. photodiode arrays)
  • DAS (data acquisition system) for current input

Tools

Title Category Headline Buy
AS5900EvalBoard Application Board Evaluation Board for AS5900

Technical Documents

Name Type Description Version Language
AS5900_BD000332_1-00.png Block Diagram AS5900 Block Diagram 1-00 English
AS5900_PD000204_1-00.png Other Product Document AS5900EvalBoard Image 1-00 English
AS5900_ShortDatasheet_DS000536_1-00.pdf Datasheet Short Datasheet 1-00 English
AS5900_FS000164_1-00.pdf Factsheet High resolution CT imaging 1-00 English

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