AFE3256 Series
256-channel analog front end (AFE) for dynamic and semi-dynamic X-ray flat-panel detectors
Manufacturer: Texas Instruments
Catalog
256-channel analog front end (AFE) for dynamic and semi-dynamic X-ray flat-panel detectors
Key Features
• 256 channelsOn-chip, 16-bit ADCHigh performance:Noise: 440 electrons RMS (1.2-pC input charge range)Low correlated noiseFull-channel integral nonlinearity: ±2 LSB at 16 bitScan time: < 16 µs to 204.8 µsIntegration:Programmable full-scale input charge range: 0.3pC to 12.5pC with resolution of 0.3pCInternal timing generator (TG)Built-in correlated double samplerSoftware programmable electron or hole integration modePipelined integrate-and-read for improved throughput—data-read during integrationSerial LVDS outputOn-chip temperature sensorSimple power supply scheme:Single 1.85V power supply operationMultiple power modes with power consumption ranging from 1mW/ch to 2mW/chPower-down modes: sleep and standbyBinning mode supportCustom chip-on-film (COF) packages256 channelsOn-chip, 16-bit ADCHigh performance:Noise: 440 electrons RMS (1.2-pC input charge range)Low correlated noiseFull-channel integral nonlinearity: ±2 LSB at 16 bitScan time: < 16 µs to 204.8 µsIntegration:Programmable full-scale input charge range: 0.3pC to 12.5pC with resolution of 0.3pCInternal timing generator (TG)Built-in correlated double samplerSoftware programmable electron or hole integration modePipelined integrate-and-read for improved throughput—data-read during integrationSerial LVDS outputOn-chip temperature sensorSimple power supply scheme:Single 1.85V power supply operationMultiple power modes with power consumption ranging from 1mW/ch to 2mW/chPower-down modes: sleep and standbyBinning mode supportCustom chip-on-film (COF) packages
Description
AI
The AFE3256 is a 256-channel, analog front-end (AFE) designed to suit the requirements of flat-panel detector (FPD) based digital X-ray systems. The device includes 256 integrators, correlated double samplers (CDSs) with dual banking, and 256:2 analog multiplexers. The device also features two 16-bit successive-approximation register (SAR) analog-to-digital converters (ADCs). Serial data from the ADCs are available in low-voltage differential signaling (LVDS) format.
The device, also commonly referred to as a readout integrated circuit (ROIC), optimizes the overall system performance using features such as multiple power modes and in-system debug options.
The sleep and standby modes enable substantial power saving which is critical for battery-powered systems.
The AFE3256 is a 256-channel, analog front-end (AFE) designed to suit the requirements of flat-panel detector (FPD) based digital X-ray systems. The device includes 256 integrators, correlated double samplers (CDSs) with dual banking, and 256:2 analog multiplexers. The device also features two 16-bit successive-approximation register (SAR) analog-to-digital converters (ADCs). Serial data from the ADCs are available in low-voltage differential signaling (LVDS) format.
The device, also commonly referred to as a readout integrated circuit (ROIC), optimizes the overall system performance using features such as multiple power modes and in-system debug options.
The sleep and standby modes enable substantial power saving which is critical for battery-powered systems.