TIDA-010133
高阻抗、500 MHZ 頻寬示波器類比前端參考設計
TIDA-010133
概覽
High Bandwidth data acquisition systems, like a digital storage oscilloscope (DSO), require the analog front-end (AFE) signal chain to have wide (-3dB) bandwidth to measure a wide range of signals, optional high input impedance to prevent loading of the measured signal, low noise to prevent degradation of signal to noise ration (SNR), and good distortion performance to maintain signal fidelity. Typical implementations of an AFE typically requires either a complex discrete design or the development of a custom front-end ASIC. This reference design provides a simpler cost-effective AFE without sacrificing performance.
特點
- 500MHz input bandwidth
- Selectable impedance (50Ω or 1MΩ)
- Support DC/AC coupling
- Wide dynamic range of 40dB programmable gain
- Support trigger function
- Precision DAC for offset control and commonmode control
- SMA connector to support TI high-speed ADC EVM
已開發完全組裝的電路板，僅供測試與性能驗證，且為非賣品。
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| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 設計指南 | High-Impedance, 500MHz Bandwidth Oscilloscope Analog Front End Reference Design | PDF | HTML | 2026/7/29 |