AFE3256
- 256 channels
- On-chip, 16-bit ADC
- High performance:
- Noise: 440 electrons RMS (1.2-pC input charge range)
- Low correlated noise
- Full-channel integral nonlinearity: ±2 LSB at 16 bit
- Scan time: < 16 µs to 204.8 µs
- Integration:
- Programmable full-scale input charge range: 0.3pC to 12.5pC with resolution of 0.3pC
- Internal timing generator (TG)
- Built-in correlated double sampler
- Software programmable electron or hole integration mode
- Pipelined integrate-and-read for improved throughput—data-read during integration
- Serial LVDS output
- On-chip temperature sensor
- Simple power supply scheme:
- Single 1.85V power supply operation
- Multiple power modes with power consumption ranging from 1mW/ch to 2mW/ch
- Power-down modes: sleep and standby
- Binning mode support
- Custom chip-on-film (COF) packages
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.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | AFE3256 256-Channel, Analog Front-End for Digital X-Ray, Flat-Panel Detectors datasheet (Rev. A) | PDF | HTML | 2024/4/24 | ||
| 證書 | AFE3256EVM EU Declaration of Conformity (DoC) | PDF | HTML | 2023/9/18 | |||
| 類比設計期刊 | Selecting a multichannel ultra-low-current measurement IC | PDF | HTML | 2022/3/18 |
設計與開發
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AFE3256EVM — 適用於 X 光平板偵測器之 256 通道類比前端 (AFE) 的 AFE3256 評估模組
AFE3256 評估模組 (EVM) 用於評估 AFE3256 產品，這是一款採用覆晶式薄膜 (COF) 封裝的低功耗、低雜訊充電讀出 IC (充電至數位轉換器)。EVM 包含一個類比電路板，該電路板與 TSWDC155EVM (FPGA EVM) 無縫整合以進行數據擷取。EVM 包含所有必要的控制訊號及板載功率產生，所以能大幅降低對外部設備的需求。此 EVM 也包括適用於 Microsoft® Windows® 且易於使用的軟體，可協助快速評估產品功能和性能。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| COF (TFU) | 320 | Ultra Librarian |
| COF (TFV) | 315 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。