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AFE0256

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256-Channel Analog Front-End for Flat-Panel Digital X-ray Detector

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Data sheet

AFE0256

ACTIVE
Data sheet Order now

Product details

Number of input channels 256 Resolution (Bits) 14 Features Differential Outputs, Internal Reference Buffer, Nap Mode, Power Down Interface type Serial Operating temperature range (°C) 0 to 85 Rating Catalog
Number of input channels 256 Resolution (Bits) 14 Features Differential Outputs, Internal Reference Buffer, Nap Mode, Power Down Interface type Serial Operating temperature range (°C) 0 to 85 Rating Catalog
DIESALE (TD) — See data sheet
  • 256 Channels
  • On-Chip, 14-Bit ADC
  • High Performance:
    • Noise: 758 electronRMS (eRMS) with
      28-pF Sensor Capacitor in 1.2-pC Range
    • Integral Nonlinearity: ±1.25 LSB
      with Internal 14-Bit ADC
    • Minimum Scan Time:
      • Normal Mode:
        37.9 µs, Internal ADC
      • 2x Binning Mode: 26 µs, Internal ADC
  • Integration:
    • Eight Selectable, Full-Scale Ranges:
      • 0.15 pC (min) to 9.6 pC (max)
    • Built-In Correlated Double Sampler
    • 2x Binning for Faster Throughput:
      • Averages
        Charge of Two Adjacent Channels
    • Pipelined Integration and Read:
      • Allows Data Read During Integration
  • Flexibility:
    • Electron and Hole Integration
    • Analog Output Provided for External
      High-Resolution ADC
  • Low Power:
    • 2.9 mW per Channel with ADC
    • 2.3 mW per Channel without ADC
    • 0.1 mW per Channel in Nap Mode
    • Total Power-Down Feature
  • 22-mm × 5-mm Gold-Bump Die Suitable for
    Tape Carrier Package (TCP) or Chip-on-Film (COF)
  • 256 Channels
  • On-Chip, 14-Bit ADC
  • High Performance:
    • Noise: 758 electronRMS (eRMS) with
      28-pF Sensor Capacitor in 1.2-pC Range
    • Integral Nonlinearity: ±1.25 LSB
      with Internal 14-Bit ADC
    • Minimum Scan Time:
      • Normal Mode:
        37.9 µs, Internal ADC
      • 2x Binning Mode: 26 µs, Internal ADC
  • Integration:
    • Eight Selectable, Full-Scale Ranges:
      • 0.15 pC (min) to 9.6 pC (max)
    • Built-In Correlated Double Sampler
    • 2x Binning for Faster Throughput:
      • Averages
        Charge of Two Adjacent Channels
    • Pipelined Integration and Read:
      • Allows Data Read During Integration
  • Flexibility:
    • Electron and Hole Integration
    • Analog Output Provided for External
      High-Resolution ADC
  • Low Power:
    • 2.9 mW per Channel with ADC
    • 2.3 mW per Channel without ADC
    • 0.1 mW per Channel in Nap Mode
    • Total Power-Down Feature
  • 22-mm × 5-mm Gold-Bump Die Suitable for
    Tape Carrier Package (TCP) or Chip-on-Film (COF)

The AFE0256 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, 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 differential output drivers.

The device also features four 14-bit successive-approximation register (SAR) analog-to-digital converters (ADCs) on board. Serial data from the ADCs are available in SPI format.

Hardware-selectable integration polarity allows positive or negative charge integration and provides more flexibility in system design. The Nap feature enables substantial power saving that is especially useful in battery-powered systems.

The AFE0256 is available as a 22-mm × 5-mm singulated format with known good gold-bump dies.

The AFE0256 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, 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 differential output drivers.

The device also features four 14-bit successive-approximation register (SAR) analog-to-digital converters (ADCs) on board. Serial data from the ADCs are available in SPI format.

Hardware-selectable integration polarity allows positive or negative charge integration and provides more flexibility in system design. The Nap feature enables substantial power saving that is especially useful in battery-powered systems.

The AFE0256 is available as a 22-mm × 5-mm singulated format with known good gold-bump dies.
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* Data sheet 256-Channel Analog Front-End for Flat-Panel Digital X-Ray Detector . datasheet (Rev. A) 23 Aug 2013

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