AFE2256
- 256 Channels
- On-Chip, 16-Bit ADC
- Photodiode Short Immunity
- High Performance:
- Noise: 750 Electrons RMS (1.2-pC Input Charge Range)
- Low Correlated Noise
- Integral Nonlinearity: ±2 LSB with Internal 16-Bit ADC
- Scan Time: < 20 µs to 204.8 µs
- Integration:
- Six Selectable, Full-Scale Input Ranges: 0.6 pC (Minimum) to 9.6 pC (Maximum)
- Internal Timing Generator (TG)
- Built-In Correlated Double Sampler
- Pipelined Integrate-and-Read for Improved Throughput—Data-Read During Integration
- Serial LVDS Output
- Simple Power-Supply Scheme:
- AVDD1 = 1.85 V
- AVDD2 = 3.3 V
- Low Power Consumption
- Nap and Total Power-Down Modes
- Custom Chip-On-Film (COF) Packages
The AFE2256 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 with dual banking, and 256:4 analog multiplexers.
The device also features four 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 nap and power-down modes enable substantial power savings, and are especially useful in battery-powered systems.
To request a full datasheet or other design resources: request AFE2256
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完整資料表及其他設計資源須簽 NDA 後提供。立即索取
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 | AFE2256 256-Channel, Analog Front-End for Digital X-Ray, Flat-Panel Detectors datasheet (Rev. C) | PDF | HTML | 2023/12/13 | ||
| 白皮書 | 以低雜訊電源裝置簡化電源架構 (Rev. A) | PDF | HTML | Download English Version (Rev.A) | PDF | HTML | 2024/11/19 | |
| 白皮書 | 簡化高壓系統的電源轉換 | PDF | HTML | Download English Version | PDF | HTML | 2023/11/10 | |
| 類比設計期刊 | Selecting a multichannel ultra-low-current measurement IC | PDF | HTML | 2022/3/18 | |||
| 技術文章 | Advancements in X-ray imaging | PDF | HTML | 2017/3/28 |
設計與開發
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AFE2256EVM — 適用於數位 X 光平板偵測器的 AFE2256 256 通道 AFE 評估模組
AFE2256EVM 是一款基於 USB 的緊湊型評估套件，用於評估 256 通道類比前端 AFE2256 COF。此 EVM 是獨立的，具有板載 DAC 和發電功能，大大減少了對外部設備的依賴。該套件由一個 EVM、兩個單獨的 COF 轉接器以及易於使用的軟體組成，可用於評估 COF 裝置的性能。COF 轉接器為可拆式，因此可以使用單一 EVM 設定來評估多個 COF 轉接器。USB 2.0 介面透過微控制器提供快速配置下載和 FPGA-PC 通訊。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| COF (TBN) | 325 | Ultra Librarian |
| COF (TDR) | 325 | Ultra Librarian |
| COF (TDU) | 320 | 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。