Analog offers 256-channel converter for CT scanners
The ADAS1131 is a 256-channel, 24-bit resolution current-to-digital converter module that is available in a 15mm by 15mm 324-ball BGA package with a 0.8-mm pitch.
The module provides a variable integration time down to 86 microseconds (11.7 kSPS at 20-bit resolution). The 0.8-mm pitch packaging feature enables designers to mount the ADAS1131 on a standard PCB substrate, a less costly and higher yield option than high density, specialized PCB substrates requiring laser vias.
The module incorporates simultaneous sample-and-hold circuitry, and two high-speed A/D converters with configurable sampling rates and incorporates internal buffers, decoupling and by-pass capacitors for data acquisition. The new converter consumes 3mW per channel at any throughput.
Block diagram of ADAS1131. Source: Analog Devices.
The module is priced at $304 quantities of 1,000 units, which equates to $1.19 per channel.
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