ADI Introduces CT Scanner Digitizer
ADI's new current-to-digital converter module doubles the number of channels, takes up 33% less space than replacement devices, and supports standard PCB substrate mounting.
Analog Devices, Inc. (ADI) introduced a current-to-digital converter module that reduces the cost and complexity of designing a computed tomography (CT) scanner system. The ADAS1131 is a 256-channel, 24-bit current-to-digital converter module in a 15 mm2 BGA package with a 0.8 mm pitch. The device requires approximately 33% less PCB area than a replacement device with a channel density of only half. With the 0.8 mm pitch package feature, designers can mount the ADAS1131 on a standard PCB substrate. This solution is less expensive and has a higher yield than a high-density dedicated PCB substrate that requires laser vias.
The ADAS1131 module includes not only 256 low-power, low-noise, low-input current integrators, synchronous sample-and-hold circuits, and two high-speed ADCs that provide configurable sample rates. It also integrates all relevant internal buffers for data acquisition. Decoupling and bypass capacitors further reduce component count and simplify board layout. At any throughput rate, the new converter consumes 3 mW per channel, the same as competing devices with only 128 channels.
Inner Mongolia Xuanda Food Co., Ltd. , https://www.xuandagroup.com