TIDA-00826
50 Ohm 2 GHz 示波器前端參考設計
TIDA-00826
概覽
This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
特點
- 50-Ω input, analog front-end with input signal bandwidth of 2 GHz
- System ENOB of 6 to 8 bits is achieved with this signal chain
- Supports a maximum input signal of ± 3V, with user-selectable options for input AC or DC coupling
- DC-offset correction feature available in DC-coupled input mode
- Three input-amplitude voltage adjustment settings provided by the front-end π-attenuator: 1:1, 2:1 and 5:1
- Low noise, high-performance fully-differential amplifier (LMH5401) used for single-ended to differential conversion
- High performance digitally-controlled variable-gain amplifier (LMH6401) programmable from 26dB to -6dB gain in 1-dB steps to maintain full-scale input at the ADC
- 12-bit ADC12J4000 operating at 4GSPS for sampling input signals
- Design supports +5 V supply using wall-mount power adapter or +12 V using internal FMC connection
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。
設計檔案與產品
設計檔案
下載立即可用的系統檔案以加速您的設計流程。
產品
設計與潛在替代方案中包括 TI 產品。
技術文件
=
TI 所選的重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 1
| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | 50-Ohm Oscilloscope Front-end Design Guide | 2015/12/14 |