DDC3512
- Single-chip design to directly measure 512 low-level currents simultaneously
- Adjustable full-scale charge range up to 600pC
- Input current: 1µA (maximum)
- Adjustable speed with integration times as low as 50µs (20 KSPS per channel)
- Resolution: 24 bit
- Low power dissipation: 1.2mW/channel
- Integral non-linearity: ±0.025% of reading ±1ppm of full scale range (all channels active)
- Low noise: 0.26 fCrms at 600pC FSR with 20pF sensor capacitance
- No charge loss
- On-chip temperature sensor
- Serial LVDS output interface
- Single 1.85V supply
- In-package bypass capacitors and reference buffer to reduce PCB area and design complexity
The DDC3512 is a 24-bit, 512-channel, current-input analog-to-digital (A/D) converter. The device combines both, current-to-voltage conversion by current integration, and A/D conversion. The device is a stacked-die version of DDC3256, with one die of the latter sitting on top of the other.
Up to 512 individual low-level current output devices, such as photodiodes, can be directly connected to the inputs and digitized in parallel (simultaneously).
For each of the 512 inputs, the device has one low noise and low power integrator designed to capture all the charge from the sensor. The integration time is adjustable from 50µs to 1.6ms, allowing currents in the order of fA to µA to be continuously measured with outstanding precision. The outputs of the integrators are digitized by on-chip low power ADCs and the converted digital codes are transmitted over a single LVDS pair designed to minimize noise coupling in environments with high channel count.
The DDC3512 operates from single 1.85V supply. The device is specified from 0°C to 70°C operating temperature and available in a 13.2 × 17.2mm2 656-ball 0.8mm row-pitch and 0.4mm column-pitch BGA. The on-chip reference buffer and bypass capacitors (on the BGA) help minimize the external component requirements and further reduce board space.
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 | DDC3512 512-Channel, Current-Input Analog-To-Digital Converter datasheet | PDF | HTML | 2025/10/31 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DDC3256EVM — DDC3256 評估模組
DDC3256EVM 是用於 DDC3256 裝置的評估模組。EVM 套件包括 DUT 電路板，與 TSWDC155EVM 評估模組 FPGA 無縫整合以進行資料擷取。EVM 包含所有必要的控制訊號及板載功率產生，因而大幅降低對外部設備的需求。最後，評估系統還為 Microsoft® Windows® 提供了易於使用的軟體。請注意，TSWDC155EVM 需單獨訂購。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| NFBGA (ZWR) | 656 | 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。