ADS42B49
- Maximum Sample Rate: 250 MSPS
- Ultralow Power:
- 850-mW Total Power at 250 MSPS
- Integrated Analog Input Buffer:
- Input Capacitance: 2.2 pF at 170 MHz
- Input Resistance: 1.1 kΩ at 170 MHz
- High Dynamic Performance:
- 85-dBc SFDR at 170 MHz
- 70.7-dBFS SNR at 170 MHz
- Crosstalk: > 85 dB at 185 MHz
- Programmable Gain Up to 6 dB for
SNR and SFDR Trade-off - DC Offset Correction
- Output Interface Options:
- 1.8-V Parallel CMOS Interface
- Double Data Rate (DDR) LVDS with
Programmable Swing:- Standard Swing: 350 mV
- Low Swing: 200 mV
- Supports Low Input Clock Amplitude
Down to 200 mVPP - Package: 9.00 mm × 9.00 mm, 64-Pin Quad Flat
No-Lead (VQFN) Package
The ADS42B49 is an ultralow-power dual-channel, 14-bit analog-to-digital converter (ADC) featuring integrated analog input buffers. It uses innovative design techniques to achieve high dynamic performance, while consuming extremely low power. The presence of analog input buffers makes this device easy to drive and helps achieve high performance over a wide frequency range. The ADS42B49 is well-suited for multi-carrier, wide bandwidth communications applications.
The ADS42B49 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a compact VQFN-64 PowerPAD™ package.
The device includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS42B49 is specified over the industrial temperature range (–40°C to 8°C).
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 | ADS42B49 Dual-Channel, 14-Bit, 250-MSPS Ultralow-Power ADC with Analog Input Buffer datasheet (Rev. C) | PDF | HTML | 2016/3/30 | ||
| 應用說明 | Design Considerations for Avoiding Timing Errors during High-Speed ADC, LVDS Dat (Rev. A) | 2015/5/22 | ||||
| 使用指南 | ADS42B4x - User's Guide (Rev. A) | 2015/1/30 | ||||
| 應用說明 | Why Use Oversampling when Undersampling Can Do the Job? (Rev. A) | 2013/7/19 |
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)。
ADS42B49EVM — 適用於最高達 250 MSPS 之雙通道、緩衝 ADC 輸入的 ADS42B49 評估模組
The ADS42B49EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS42B49 device, an extremely low power dual channel 14-bit 250 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)
ADS58C28SPIGUI-SW — ADS42xxx SPI GUI
DATACONVERTERPRO-SW — 高速資料轉換器 Pro GUI 安裝程式，v5.31
這款高速資料轉換器專業 GUI 是一款 PC（與 Windows® XP/7/10 相容）程式，旨在協助評估大多數 TI 高速資料轉換器 [類比轉數位轉換器 (ADC) 和數位轉類比轉換器 (DAC)] 和類比前端 (AFE) 平台。DATACONVERTERPRO-SW 旨在支援整個 TSW14xxx 系列資料擷取和模式產生卡，為時域和頻域中的資料轉換器分析提供強大且快速的解決方案，並支援單音、多音和調變訊號。此 GUI 也與 TI 模式產生 GUI 相容，可快速合成單音、多音和調變訊號。
使用者可以向 DATACONVERTERPRO-SW 提供自訂模式，以載入到 TI DAC。支援從 (...)
SLAC546 — ADS42B49EVM GUI
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。
除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。
SBAC119 — TIGAR (Texas Instruments Graphical Evaluation of ADC Response Tool)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |