AFE1256 Series
256-channel analog front end (AFE) for flat-panel digital X-ray detectors
Manufacturer: Texas Instruments
Catalog
256-channel analog front end (AFE) for flat-panel digital X-ray detectors
Key Features
• 256 ChannelsOn-Chip, 16-Bit ADCPhotodiode Short ImmunityColumn Short ImmunityHigh Performance:Noise: 758 e-RMS with 28-pF SensorCapacitor in 1.2-pC RangeIntegral Nonlinearity:±2 LSB with Internal 16-Bit ADCMinimum Scan Time:37.9 µs in Normal Mode20 µs in 2x Binning ModeIntegration:Eight Selectable Full-Scale Ranges:0.15 pC (Min) to 9.6 pC (Max)Built-In Correlated Double Sampler2x Binning (Averages Charge of Two AdjacentChannels) for Faster ThroughputPipelined Integrate and Read: Allows DataRead During IntegrationFlexibility:Electron and Hole IntegrationLow Power:2.9 mW/Ch with ADC2.3 mW/Ch without ADC0.1 mW/Ch in Nap ModeTotal Power-Down Feature22-mm × 5-mm Gold-Bump Die,Suitable for TCP and COFApplicationFlat-Panel, X-Ray DetectorAll trademarks are the property of their respective owners.256 ChannelsOn-Chip, 16-Bit ADCPhotodiode Short ImmunityColumn Short ImmunityHigh Performance:Noise: 758 e-RMS with 28-pF SensorCapacitor in 1.2-pC RangeIntegral Nonlinearity:±2 LSB with Internal 16-Bit ADCMinimum Scan Time:37.9 µs in Normal Mode20 µs in 2x Binning ModeIntegration:Eight Selectable Full-Scale Ranges:0.15 pC (Min) to 9.6 pC (Max)Built-In Correlated Double Sampler2x Binning (Averages Charge of Two AdjacentChannels) for Faster ThroughputPipelined Integrate and Read: Allows DataRead During IntegrationFlexibility:Electron and Hole IntegrationLow Power:2.9 mW/Ch with ADC2.3 mW/Ch without ADC0.1 mW/Ch in Nap ModeTotal Power-Down Feature22-mm × 5-mm Gold-Bump Die,Suitable for TCP and COFApplicationFlat-Panel, X-Ray DetectorAll trademarks are the property of their respective owners.
Description
AI
The AFE1256 is a 256-channel, analog front-end (AFE) designed to suit the requirements of flat-panel detectors (FPDs) based on digital X-ray systems. The device includes 256 integrators, a programmable gain amplifier (PGA) for full-scale, charge-level selection, a correlated double sampler (CDS) with dual banking, 256:4 analog multiplexers, and four 16-bit, successive-approximation register (SAR) analog-to-digital converters (ADCs) onboard. Serial data from the ADCs are available in SPI™ format.
Hardware-selectable integration polarity allows for the integration of positive or negative charge and provides more flexibility in system design. The Nap feature enables substantial power saving. This power savings is especially useful in battery-powered systems.
The device is available as a 22-mm × 5-mm gold-bumped die and a 38-mm × 28-mm, COF-314 TDS package in singulated forms.
To request a full data sheet or other design resources:request AFE1256
The AFE1256 is a 256-channel, analog front-end (AFE) designed to suit the requirements of flat-panel detectors (FPDs) based on digital X-ray systems. The device includes 256 integrators, a programmable gain amplifier (PGA) for full-scale, charge-level selection, a correlated double sampler (CDS) with dual banking, 256:4 analog multiplexers, and four 16-bit, successive-approximation register (SAR) analog-to-digital converters (ADCs) onboard. Serial data from the ADCs are available in SPI™ format.
Hardware-selectable integration polarity allows for the integration of positive or negative charge and provides more flexibility in system design. The Nap feature enables substantial power saving. This power savings is especially useful in battery-powered systems.
The device is available as a 22-mm × 5-mm gold-bumped die and a 38-mm × 28-mm, COF-314 TDS package in singulated forms.
To request a full data sheet or other design resources:request AFE1256
